*$ - StarBucks /. - Slashdot (website) `, - What is? (CMU Zephyr) == - Expression of agreement on zephyr (originally from CMU) ++ - Expression of praise on zephyr; "giving props" 007 - James Bond 1 - Civil and Environmental Engineering (MIT department) 10 - Chemical Engineering (MIT department) 11 - Urban Studies and Planning (MIT department) 12 - Earth, Atmospheric, and Planetary Sciences (MIT department) 13 - Ocean Engineering (MIT department) 14 - Economics (MIT department) 15 - Management (MIT department) 16 - Aeronautics and Astronautics (MIT department) 17 - Political Science (MIT department) 18 - Mathematics (MIT department) 2 - Mechanical Engineering (MIT department) 20 - Program in Biological Engineering (MIT department) 21 - Humanities (MIT department) 21A - Anthropology/Archaeology (MIT department) 21F - Foreign Languages and Literatures (MIT department) 21H - History (MIT department) 21L - Literature (MIT department) 21M - Music and Theater Arts (MIT department) 21W - Program in Writing and Humanistic Studies (MIT department) 22 - Nuclear Engineering (MIT department) 24 - Linguistics and Philosophy (MIT department) 2CB - 4-bromo-2,5-dimethoxyphenethylamine 2FA - Two-Factor Authentication 3 - Materials Science and Engineering (MIT department) 4 - Architecture (MIT department) 420 - Marijuana (also 4:20) 5 - Chemistry (MIT department) 6 - Electrical Engineering and Computer Science (MIT department) 7 - Biology (MIT department) 8 - Physics (MIT department) 9 - Brain and Cognitive Sciences (MIT department) 911 - terrorist attacks of September 11, 2001 A11Y - AccessibilitY (see i18n) AA - Authoritative Answer (DNS) AAA - Authentication, Authorization and Accounting (IETF working group) AAAAI - American Academy of Allergy, Asthma and Immunology AAC - Activities for the Athletically Clined AAC - Administrative Advisory Council (MIT; as in aac-aoquery) AAC - Advanced Audio Coding (MPEG-4, Apple, Via Licensing) AARP - American Association of Retired People AASBHTA - As Always, Sheldon Brown Has The Answer (bicycles, sheldonbrown.com) AASHTA - As Always, Sheldon Has The Answer (bicycles, sheldonbrown.com) AAVE - African-American Vernacular English AB - Alberta (Canadian Province) ABB - Anybody But Bush ABC - Anything But Clothes (Burton-Conner party) ABC - American-Born Chinese ABCD - American Born Confused Desi ABD - All But Dissertation ABN - Angled Bed of Nails [telco buttset lead type] ABNF - Augmented Backus-Naur Form ABOK - Ashley Book Of Knots ABP - Au Bon Pain ABST - Administrative Business Services Team AC - Air Canada (airline) AC - Air Conditioning ACA - Affordable Care Act ACAB - All Cops Are Bastards ACAP - Application Configuration Access Protocol ACAP - Automated Content Access Protocol ACAT - Administrative Computing Advocacy Team ACE - Access Control Entity (moira) ACEI - Association for Childhood Education International ACH - Automated Clearing House [transfer] (banking) ACIS - Academic Computing Installations & Spaces Team (MIT IS&T) ACIS - AXAF CCD Imaging Specrometer ACL - Anterior Cruciate Ligament ACLS - Advanced Cardiac Life Support (Medical) ACMG - Academic Computing Management Group [MIT I/S] ACRONYM - Abbreviated Coded Rendition of Name Yielding Meaning ACSL - American Computer Science League ACT - American College Test [obsolete] ACTRA - Alliance of Canadien Cinema, Television and Radio Artists (ACTRA) ACUS - AT&T College & University Solutions AD - Authentic Data (DNSSEC) AD - Active Directory (Microsoft) ADA - Americans with Disabilities Act ADC - Atmospheric Dispersion Corrector ADC - Apple Developer Connection (Apple) ADD - Attention Deficit Disorder ADF - Alliance Defense Fund ADHD - Attention Deficit Hyperactivity Disorder ADL - Activities of Daily Living (medical) ADL - Anti-Defamation League ADR - American Depository Receipt ADSI - Active Directory Service Interface ADSL - Asymmetric Digital Subscriber Line ADSM - Adstar Distributed Storage Manager AEAD - Authenticated Encryption with Associated Data AED - Automated External Defibrillator AEDPA - Antiterrorism and Effective Death Penalty Act AES - Advanced Encryption Standard (NIST FIPS-197) AF - Abstraction Function AFB - Acid-Fast Bacillus AFAICT - As Far As I Can Tell AFAIK - As Far As I Know AFCI - Arc Fault Circuit Interrupter AFGNCAAP - Ageless Faceless Gender-Neutral Culturally Ambiguous Adventure Person (IF) AFH - Adult Family Home AFJ - April Fools' Joke AFOL - Adult Fans Of LEGO AFP - Agence France Press (Newswire Agency) AFPL - Aladdin Free Public License AFRL - Air Force Research Lab AFROTC - Air Force Reserve Officer Training Corps AFSD - And Fools Seldom Differ [cf. GMTA] AFZ - Away From Zephyr AG - Aktiengesellschaft (German) AH - Air Handler (MIT PP) AH9 - AH that serves SIPB (MIT PP) AHBOU - alt.humor.best-of-usenet AHEC - Ashdown House Executive Committee (MIT) AHPF - All Hail Pass Fail AHRA - Audio Home Recording Act AHSME - American High School Mathematics Exam AHT - Aspiring Harvard Technologists (compare THA) AIFC - Alumni IFC (MIT) (now AILG) AILG - Association of Independent Living Groups (MIT) (was AIFC) AIM - Access Isolation Mechanism (Multics) AIM - AOL Instant Messenger AIME - American Invitational Mathematics Examination AIPAC - American Israeli Public Affairs Committee AIRE - Agent-based Intelligent Reactive Environments AISB - Ancient Illuminated Seers of Bavaria AIUI - As I Understand It (gale) AJAX - Asynchronous JavaScript And XML (Web) AKICIF - All Knowledge Is Contained In Fandom AKU - Adaptation Kit Update (software/hardware development) AL - Aluminum ALD - AdrenoLeukoDystrophy (genetic disorder) ALK - Automated Lamellar Keratoplasty [vision correction] ALS - Advanced Life Support (Medical) ALS - Amyotrophic Lateral Sclerosis ALSA - Advanced Linux Sound Architecture ALT - Anarchists, Lunatics, and Terrorists (USENET hierarchy) AMA - Ask Me Anything (reddit) AMC - American Mathematics Competitions AMD - automounter daemon AMDG - Ad Maiorem Dei Gloriam (For the greater glory of God) AMF - Against Malaria Foundation AMFYOYO - Adios, Mother Fucker, You're On Your Own AMI - Acute Myocardial Infarction (heart attack) AMITA - Association of MIT Alumnae AMOLED - Active Matrix Organic Light-Emitting Diode AMP - Advanced Music Performance [MIT] AMPED - Asymmetric MultiProcess Event-Driven AMPR - AMateur Packet Radio Network AMR - Adaptive Multi-Rate (GSM) AMSL - Active Materials and Structures Laboratory [MIT] AMT - Alternative Minimum Tax ANAIS - Architecture Not Allowed In Source (Debian) ANFO - Ammonium Nitrate and Fuel Oil (explosive) ANS - Alumni Network Services (MIT) ANT - All Night Tool [MIT] ANT - Alphabetic Number Tables [MIT] AO - Active Optics AO - Adaptive Optics AO - Administrative Officer AOCCL - All Other Combs Clean Legged (Bantam chickens) AOP - Abnormal Operating Procedure(s) AOP - Aspect-Oriented Programming AOPS - Art of Problem Solving AOT - Ahead Of Time [compiler] AOV - Analysis Of Variance APA - Amateur Publishing Association APA - American Psychological Association APAC - Asia/Pacific APC - Armored Personnel Carrier (Military) APC - Automatic Passenger Counter APEC - Asia-Pacific Economic Cooperation API - Associated Press International APLATS - All Programming Languages Are The Same APMM - Annoying Pretentious Mystery Mongering (bpchen) APRG - Anne P.R. Glavin [MIT CP chief] APRS - Automatic Packet Reporting System APT - Advanced Packaging Tool (Debian) APT - Advanced Persistent Threat APU - Accelerated Processing Unit APUE - Advanced Programming in the UNIX Environment (book) AR - Argentina AR - Auto Regressive ARC - Academic Resource Center (MIT) ARC - Adaptive Replacement Cache ARCADE - Assisting Recurring Cultural And Diversity Events (MIT funding source) ARCTAN - American Red Cross Team And Network (MIT) ARES - Amateur Radio Emergency Service ARFCN - Absolute Radio Frequency Channel Number (GSM) ARG - Alternate Reality Gaming ARIMA - AutoRegressive Integrated Moving Average ARIN - American Registry for Internet Numbers ARMA - AutoRegressive Moving Average ARML - American Regions Math League ARP - Agricultural Rehabilitation Program ARPU - Average Revenue Per User ARV - AntiRetroViral drug ARW - Angle Random Walk ASA - Association of Student Activities (MIT) ASan - AddressSanitizer (LLVM) ASB - alt.sex.bondage (Usenet) ASB - Alternative Spring Break [MIT 1999] ASBO - Anti-Social Behaviour Order (UK) ASCE - American Society of Civil Engineers ASE - Advanced Standing Exam ASEC - Aperture Science Enrichment Center (Portal video game) ASF - Audi Space Frame ASI - Address Space Identifier ASICS - Anima Sana In Corpore Sano (athletic equipment corporation) ASIN - Amazon Standard Identification Number ASIO - Australian Security Intelligence Organisation ASIO - Audio Stream Input/Output ASL - Age, Sex, Location (IRC) ASL - American Sign Language ASL - Association for Symbolic Logic ASLR - Address space layout randomization ASNWS - A Simple No Would Suffice ASO - Allele-Specific Oligonucleotide testing ASO - Arab Student Organization ASO - Athena Software Operations ASP - Apple System Profiler ASP - Application Service Provider ASP - Astronomical Society of the Pacific ASR - Arithmetic Shift Right ASR - Autonomic Stress Response ASS - Athena Software Service team ASSP - Advanced Solid State Photonics (Technical Conference) ASSP - Application Specific Standard Product ASST - Administrative Server Services Team (MIT I/S) ASSTR - alt.sex.stories Text Repository AST - Abstract Syntax Tree ASVAB - Armed Services Vocational Aptitude Battery ASW - Anti-Submarine Warfare ASW - Athena Services Watch AT&T - American Telephone and Telegraph ATF - Above The Fold ATAPI - AT Attachment Packet Interface ATDOTOCICOSO - At The Discretion Of The Office Czar In Charge Of Special Operations [SIPB] ATE - Athena/Tether/Eudora (refers to Kerberos passwords) ATF - [Bureau of] Alcohol, Tobacco, and Firearms ATFP - AppleTalk Filing Protocol ATHF - Aqua Teen Hunger Force ATIC - Adaptive Technology for Information and Computing (MIT) ATLA - Association of Trial Lawyers of America ATM - Air Traffic Manager ATM - At The Moment ATS - Association of Taiwanese Students (MIT) AtS - Angel, the Series (TV) AU - African Union AUI - Athena User Interface AUP - Advanced Undergraduate Project (MIT) authn - Authentication (proving your identity; compare authz) authz - Authorization (proving access rights; compare authn) AUV - Autonomous Underwater Vehicle AVL - Automatic Vehicle Location AVM - ArterioVenous Malformation AVN - Avascular Necrosis AVS - Address Verification System (Credit Card) AVTAK - A View To A Kill (James Bond) AVX - Advanced Vector eXtensions AWM - Association for Women in Mathematics AWS - Amazon Web Services (cloud computing) AXAF - Advanced X-ray Astrophysics Facility AXCOAPO - Alpha Chi chapter of Alpha Phi Omega AXIS - Apache eXtensible Interaction System AXO - Alpha Chi Omega AYBABTU - All Your Base Are Belong To Us (see Zero Wing FAQ @ www.gamefaqs.com) AYMK - As You May Know AYT - Are You There B - Boron B&S - Brown & Sharpe [wire gauge; equivalent to AWG] B2B - Business to Business B2C - Business to Consumer B5 - Babylon 5 (TV series) BA - Behavior Aggregate (IETF Differentiated Services) BA - Bell Atlantic BAK - Back at Keyboard (slang, Usenet, IRC; see also AFK) BAPHL - Boston Area Puzzle Hunt League BARCC - Boston Area Rape Crisis Center BART - Bay Area Rapid Transit BASE - Building, Antenna, Span, Earth (parachuting) BAT - Basic Assurance Test BATF - Bureau of Alcohol Tobacco and Firearms BATNA - Best Alternative To a Negotiated Agreement BB&N - Buckingham, Browne and Nichols (HS) BBF - BioBricks Foundation BBFN - Bye Bye For Now BBIAF - Be Back In A Few (slang, Usenet, IRC) BBQ - Barbecue BBS - Be Back Soon BBT - The Big Bang Theory (TV show) BBWAA - BaseBall Writers' Association of America BBYO - B'nai B'rith Youth Organization BC - Boston College BC - Buoyancy compensator (SCUBA) BCI - Battery Council International BCT - Baire's category theorem BCAE - Boston Center for Adult Education BCC - Body-Centered Cubic BCCI - Bank of Credit and Commerce International BCD - Bolt Circle Diameter BCE - Bell Canada Enterprises BCH - Bose-Chaudhuri-Hochquenghem (BCH code) BCIS - Bureau of Citizenship and Immigration Services (formerly the INS) BCP - Best Current Practice (IETF) BCP - Birth Control Pill BCS - Bardeen, Cooper, and Schreiffer (standard superconductor model) BCS - Bowl Championship Series (college football) BCS - Brain and Cognitive Sciences (MIT Course 9) BDAWF - Blood-Drenched Apparition With Fangs BDFL - Benevolent Dictator For Life BDM - Big Damn Movie ("Serenity", Firefly (TV Series)) BDSM - Bondage and discipline/Dominance and submission/Sadism and Masochism BDT - Ballroom Dance Team (MIT) BDU - Battle Dress Uniform BE - Beryllium BEAST - Browser Exploit Against SSL/TLS (name of a specific attack) BEB - Binary Exponential Backoff BEC - Bose-Einstein Condensate BEH - Bioengineering and Environmental Health BEL - BELl (ASCII 7) BF&I - Brute Force and Ignorance [ietf-ppp] BFD - Big Fat Deal BFE - Butt-Fucking Egypt [MIT parking lot] BFF - Bank Fail Friday BFF - Best Friends Forever BFG - Big Fucking Gun BFH - Big Fucking Hammer BFH - Bus Fair Home [chiefly British] BFNN - Bizarre Format with No Name (document format) BFS - Breadth First Search BFS - Build From Source BHAM - Birmingham (AL, USA) BHCC - Bunker Hill Community College BHO - Barack Hussein Obama BIAB - back in a bit BIAF - Back In A Few (slang, Usenet, IRC) BIAW - back in a while BIB - back in (a) bit BICSO - Boston InterCollegiate Service Organization BIDMC - Beth Israel Deaconness Medical Center (Boston) BIF - Booth Improvement Fund [Committee] (LSC) BIF - Built-In Function (assembly language) BIM - Building Information Model (Architectural CAD) BIMD - Back In My Day BIOYIOP - Blow It Out Your Input Output Port BIPM - Bureau International des Poids et Mesures (International Bureau of Weights and Measures) BIST - Built-In Self Test (circuits) BITD - Back In The Day BJT - Bipolar Junction Transistor BKL - Big Kernel Lock (Linux) BLA - Brainwashed Loyal Agent (MIT Assassins' Guild) BLB - Boston Licensing Board BLS - Basic Life Support (Medical) BLS - Basic Living Stipend (David Weber's Honor Harrington universe) BLS - Boston Light and Sound (blsi.com) BMC - Baseboard Management Controller BME - Bio-Medical Engineering BMOP - Boston Modern Orchestra Project BMP - Basic Multilingual Plane (Unicode) BMP - BitMaP (a Windows Graphics format) BMP - Bone Morphogenic Protein BNC - Big Nobby Connector [connector - very accurate joke - see BNC [connector] expansion(s)] BNCT - Boron-Neutron Capture Therapy (cancer treatment) BNEP - Bluetooth Network Encapsulation Protocol BNL - BareNaked Ladies (Musical group) BNL - Brookhaven National Laboratory BNO - Breaking News Online (bnonews.com) BNP - Bangladesh Nationalist Party BNP - British National Party BNSF - Burlington Northern Santa Fe BoA - Bank of America BOCTAOE - But Of Course There Are Obvious Exceptions BOFH - Bastard Operator From Hell BOHICA - Bend Over, Here It Comes Again BOLO - Be On LookOut BOP - Broken Orange Pekoe (cf FOP) BORG - Backbone Operators' Retreat / Gathering [Internet] BOS - Basic Overseer Server (AFS) BP - Base Pair (genetics) BPA - Bisphenol A BPL - Boston Public Library BPL - Broadband over Power Lines BPM - Beats Per Minute BPM - Business Process Modelling BPO - Business Process Outsourcing BPOS - Buggy Piece of Shit BPP - Best Proportional Predictor BPP - Bounded-error Probabilistic Polynomial-time (complexity class) BPS - Best Practical Solutions [RT,SVK] BPS - Boston Public Schools BR - BedRoom (Real-Estate) BRB - Be Right Back BRD - Business Requirements Document BRE - Basic Regular Expression BREACH - Browser Reconnaissance and Exflitration via Adaptive Compression of Hypertext (attack against HTTPS) BRT - Be Right There BS - Bull Shit BSC - Boston Scientific Corporation (also BSCI) BSCI - Boston Scientific Corporation (also BSC) BSE - Bovine Spongiform Encephalopathy BSG - Battlestar Galactica BSG - Brotherhood of Saint Gregory BSL - British Sign Language BSO - Boston Symphony Orchestra BSOD - Blue Screen of Death (Windows NT, et.al.) BSRA - Boston Street Railway Association BSS - Basic Service Set (IEEE 802.11) BT - BitTorrent BT - BlueTooth BT - British Telecom BTAF - Bob the Angry Flower (comic strip) BTC - Bitcoin BTD - Boston Transportation Department BTDT - Been There, Done That BTDTBTT - Been There, Done That, Bought The T-Shirt BTDTGTTS - Been There, Done That, Got The T-Shirt BTFO - Back The Fuck Off BTLS - Basic Trauma Life Support (Medical) BTNS - Better Than Nothing Security BTO - Build to order BTR - Baton Rouge (Airport) BTS - Bug Tracking System BTSC - Broadcast Television Systems Committee BtVS - Buffy the Vampire Slayer (TV series) BU - Boston University BUDA - Boston Ultimate Disc Alliance BVD - Bradley, Voorhees and Day (underwear company) BW - Black & White BWH - Brigham and Women's Hospital BWIWAF - Back When I Was A Freshman BWOC - By Way Of Contradiction BWR - Boiling Water Reactor BWT - Burrows-Wheeler transform BWTM - But Wait, There's More BWV - Bach-Werke-Verzeichnis [Catalog of Bach's Works] BYKT - But You Knew That BYOB - Bring Your Own Bottle BYOD - Bring Your Own Device BYODKM - Bring Your Own Display, Keyboard, Mouse BYOK - Bring Your Own Knife BZA - Board of Zoning Appeal BZK - Benzalkonium chloride C-P-D - config-package-dev C-R - CSAIL-Related (mailing list) C - Carbon C - Country (LDAP) C - hundred (Roman numeral) C14N - Canonicalization C2 - Command and Control C4I - Command, Control, Computers, Communications, and Information C4ISR - Command, Control, Computers, Communications, Intelligence, Surveillance, and Reconnaissance CA - Canada (ISO country code) CA - Central America (MIT SIPB project) CA - Common Anode (electronics) CABEB - Capture Avoidance Binary Exponential Backoff CABG - Coronary Artery Bypass Graft CAC - Campus Activities Complex (MIT) CAD - Computer-Aided Detection (radiology, medicine) CADC - Court of Appeals, DC Circuit CAFC - Court of Appeals, Federal Circuit CAIDA - Cooperative Association for Internet Data Analysis CALEA - Communications Assistance for Law Enforcement Act CAN - Cancel (ASCII 24) CANES - Center for Advanced Nuclear Energy Systems (MIT) CAP - Coded Anti Piracy (film industry) CAP - Committee on Academic Performance (MIT) CAP - Community-Acquired Pneumonia (medicine) CAP - Competitive Access Provider (telco) CAPAC - Congressional Asian Pacific American Caucus CAPD - Central Auditory Processing Deficit CAPPS - Computer Assisted Passenger Profiling System CAPTCHA - Completely Automated Public Turing test to tell Computers and Humans Apart CARET - Centre for Applied Research in Educational Technologies (Cambridge University) CARP - Copyright ARbitration Panel CAS - Central Authentication Service CASPAR - Cambridge and Somerville Program for Alcoholism and Drug Abuse Rehabilitation CAT - Computed Axial Tomography CATO - Catastrophe At Take Off CAVE - Cellular Authentication, Voice privacy and Encryption algorithm CAVS - (MIT) Center for Advanced Visual Studies CBC - Cambridge Brewing Company CBD - Concise Bounded Description (W3C, http://www.w3.org/Submission/CBD/) CBI - Central Bureau of Investigation (India) CBP - (US) Customs and Border Patrol CBQ - Class-Based Queueing CBT - Cognitive Behavioral Therapy C&C - Command and Control CC - Common Cathode (electronics) CC - College Confidential (website) CCAE - Cambridge Center for Adult Education CCAPI - COPS Client Application Programming Interface CCC - Campus Crusade for Christ CCC - Campus Crusade for Cthulhu CCC - Critical Coagulation Concentration CCCP - Soyuz Sovietskikh Socialisticheskikh Respublic (USSR) CCD - Charge-Coupled Device CCF - Call Center Facilitators CCFL - Cold Cathode Fluorescent Lamp CCG - Collectible Card Game CCM - Counter with CBC-MAC (block cipher mode) CCNA - Cisco Certified Network Associate CCP - Communications, Control, & Planning (MIT: John Curry) CCR - Center for Cancer Research (MIT) CCR - Computer Communications Review (ACM SIGCOMM publication) CCS - Chocolate Covered Spider CCTV - Cambridge Community TeleVision (local cable channel) CCTV - China Central TeleVision (MIT Cable) CCW - Concealed Carry Weapon CD - Checking Disabled (DNSSEC) cd - Candela (cd) CD - Countdown CDAB - Campus Dining Advisory Board CDBS - Common Debian Build System CDDB - Compact Disk Database CDDL - Common Development and Distribution License CDF - Channel Definition Format (Microsoft) CDH - Congenital Dislocation of the Hip joint CDIO - Conceive, Design, Implement, Operate [engineering] CDL - Commercial Driver's License CDN - Content Delivery Network (e.g. Akamai) cDNA - Complementary DNA CDOT - Connecticut Department of Transportation CDP - Cisco Discovery Protocol CDS - Credit Default Swap CDSA - Community Development and Substance Abuse Center (MIT) CDT - Center for Democracy and Technology CECI - The Center for Educational Computing Initiatives CEDPA - CEnter for Development and Population Activities CEF - Conditional Expectation Function CEG - Course Evaluation Guide (MIT) CELCO - Cambridge Electric Light Company (a division of Com Electric) CERC - Cost-Effective RAID Controller (Dell, rebranded LSI/AMI) CESDIS - Center of Excellence in Space Data and Information Sciences CF - "confer", a Latin verb in the imperative, meaning "compare [with]" CF - Compact Flash (memory) CF - Cystic Fibrosis CFAA - Computer Fraud and Abuse Act CFAR - Constant False Alarm Rate CFB - Cipher Feedback (block cipher mode of operation) CFG - Context Free Grammar CFG - Control Flow Graph CFH - Cubic Feet per Hour (gas flow) CFL - Compact Fluorescent Light CFRG - Crypto Forum Research Group (IRTF) CFT - Copious Free Time CG - Complete Game (baseball) CGI - Common Gateway Interface CGMS - Continuous Glucose Monitoring System CH - Chemical Hypersensitivity CHA - Cambridge Health Alliance CHD - Computing Help Desk (MIT I/S) CHF - Congestive Heart Failure CHPW - Center for Health Promotion & Wellness (MIT Medical) CHUD - Cannibalistic Humanoid Underground Dwellers (movie) CI - Cochlear Implant CI - Continuous Integration CI - Cranial Implant CIA - Culinary Institute of America CIB - Carnation Instant Breakfast CIC - Cambridge Innovation Center CIC - Combat Information Center CIC - Commander In Chief CID - Criminal Investigation Command (US Army) CIDA - Canadian International Development Agency CIOMS - Council for International Organizations of Medical Sciences CIR - Committed Information Rate CIRA - Canadian Internet Registry Authority CIS - Center for International Studies (MIT) CIS - Cryptography and Information Security (CSAIL) CISM - Critical Incident Stress Management CJAC - Corporation Joint Advisory Committee (MIT) CJK - Chinese/Japanese/Korean CJKV - Chinese/Japanese/Korean/Vietnamese CJR - Columbia Journal Review (magazine) CL - Common Lisp CLC - Cambridge Licensing Commission (cf BLB) CLEC - Competitive Local Exchange Carrier CLF - Conservation Law Foundation CLIT - Coalition Liberation of Itneninant Tree-Dwellers CLL - Chronic Lymphocytic Leukemia CLOB - Character Large OBject (SQL) CLOCKSS - Controlled LOCKSS (digital libraries) CLR - Common Language Runtime CLR - Cormen, Leiserson, and Rivest (authors, Introduction to Algorithms) CLRS - Cormen, Leiserson, Rivest, and Stein (authors, Introduction to Algorithms 2nd edition) CLVM - Clustered Logical Volume Manager CM - Computer Modern (TeX's default font) CMA - Cover My Ass CME - Cambridge MIT Exchange (program/student) CMF - Campus MovieFest CMI - Cambridge-MIT Institute (MIT/Cambridge Exchange Initiative) CMJ - College Media Journal CMJ - College Music Journal CMM - Capability Maturity Model CMO - Chief Marketing Officer CMR - Computer Modern Roman (LaTeX font) CMS - Centers for Medicare and Medicaid Services CMS - Comparative Media Studies (MIT) CMS - Content Management System CMSRN - Certified Medical-Surgeon Registered Nurse CMV - Commercial Motor Vehicle CMVC - Configuration Management and Version Control CN - Common Name (LDAP) CND - Computer Network Defense CNID - Calling Number IDentification (proper name for Caller-ID) CNIDR - Clearinghouse for Networked Information Discovery and Retrieval CNM - Certified Nurse-Midwife CNR - Communication and Networking Riser CO - Clothing Optional COA - Certificate Of Authenticity (Microsoft) COBRA - Consolidated Omnibus Budget Reconciliation Act (1986) COC - Committee On Curriculum (MIT) COD - Committee On Discipline CODA - Children of Dead Adults COFHE - Consortium On Financing Higher Education COMINT - COMmunications INTelligence COP - Circle of Protection (Magic: The Gathering) COPA - Child Online Protection Act (successor to CDA) COPD - Chronic Obstructive Pulmonary Disease COPPA - Child Online Privacy Protection Act CORI - Criminal Offender Record Information (MA) COTS - Commercial Off The Shelf COUHES - Committee On the Use of Humans as Experimental Subjects (MIT) COVID - COronaVIrus Disease COVID19 - COronaVIrus Disease 2019 COW - Copy-On-Write COXIB - Cyclo-Oxygenase-2 Inhibitor (subclass of NSAIDs) CP - Campus Police (MIT) CP - Community Players (MIT) CPA - Call Progress Analysis (telephony) CPAC - Commander Premier Aircraft Corporation CPAC - Conservative Political Action Conference CPAC - Cute People Are Cute! - [Tautological expression popularized by Laura Dean] CPCTC - Corresponding Parts of Congruent Triangles are Congruent CPFSK - Continuous-Phase Frequency Shift Keying CPI - Consumer Price Index (economic metric) CPK - California Pizza Kitchen CPLD - Complex Programmable Logic Device CPM - Cost Per Thousand (advertising, engineering quotes, etc.) CPOE - Computerized Physician Order Entry CPS - Continuation-Passing Style (functional programming) CPSU - Communist Party of the Soviet Union CPT - Cisco Protocol Translator ("pasta PAD") CPT - Curricular Practical Training CPT4 - Current Procedural Terminology 4 CPUF - Controlled Physical Random Function CPUF - Controlled Physical Unclonable Function CPVI - Cook Partisan Voting Index CPW - Campus Preview Weekend (MIT) CPW - Change Password (Kerberos kadmin) CR1 - Commutative Ring with Identity CRAF - Civil Reserve Air Fleet CRC - Charles River Conservancy (Boston) CRC - Chemical Rubber Company (usu. CRC's guide to chemistry and physics) CRIME - Compression Ratio Info-leak Made Easy (name of an attack on TLS) CRL - Computer Resource Lab (MIT, Dept. Urban Studies & Planning) CRM - Customer Relationship Management CRO - Cathode Ray Oscilloscope CRP - Challenge-Response Pair CRP - Crap Reduction Program CRSP - Committee for the Review of Space Planning (MIT) CRT - Chinese Remainder Theorem CRU - Customer Replaceable Unit CRUD - Chopper-Riding Urban Dwellers CRUD - Create, Retrieve, Update, and Delete (database) CS - Creative Suite (Adobe marketing, 2004) CSAIL - Computer Science and Artificial Intelligence Laboratory (MIT LCS + AI Lab) CSBI - Computational and Systems Biology [MIT] CSDB - CellServ DB (AFS) CSG - Counterterrorism Security Group (White House) CSGE - Conformation-Sensitive Gel Electrophoresis CSI - Control Sequence Introducer CSICOP - Committee for the Scientific Investigation of Claims of the Paranormal CSP - Content Security Policy (Web security) CSR - Certificate Signing Request CSR - Corporate Social Responsibility CSR - Customer Service Representative CSRF - Cross-site Request Forgery(Web security) CSS - Cascading Style Sheets (XML) CSS - Client Support Services (MIT IS&T) CSS - Counseling and Support Services (MIT) CSS - Cross-Site Scripting (WWW,Security) CSSA - Chinese Students and Scholars Association CSW - CSAIL Student Workshop (MIT) CT - Carrier Transitions (datacom) CT - Continuous Time CTC - Counterterrorist Center CTC - Cut [alt.: Crush], Tear, Curl (a tea manufacturing process) CTC - Copy Technology Centers CTC - Cost To Company CTCP - Client-to-Client Protocol (IRC) CTCSS - Continuous Tone-Coded Squelch System (radio) CTF - Capture The Flag CTL - Center for Transportation & Logistics (MIT) CTO - Chief Technical Officer CTR - CounteR (block cipher mode of operation) CTT - Compatibility Test Tools (Java programming) CTTOI - Come To Think Of It CTY - Center for Talented Youth (pre-college summer program at Johns Hopkins U.) CU - Copper CUDA - Compute Unified Device Architecture (NVIDIA GPUs) CUP - Central Utilities Plant (MIT) CUP - Constructor of Useful Parsers (Java LALR parser generator) CUPS - Common Unix Printing System CUTCAT - Citizens United for Twenty-four Columbia Apartment Two [24 Columbia St.] CVD - Chemical Vapor Deposition CVE - Common Vulnerabilities and Exposures (MITRE) CVS - Chorionic Villus Sampling (prenatal diagnosis technique) CVS - Concurrent Versioning System CVS - Consumer Value Store (chain) CW - ClockWise CW - Conventional Wisdom CWRU - Case Western Reserve University CYA - Cover Your Ass CYOA - Choose Your Own Adventure D - five hundred (Roman numeral) DA - Distribution Amplifier DA:I - Dragon Age: Inquisition (video game) DA:O - Dragon Age: Origins (video game) DAAP - Digital Audio Access Protocol DAC - Derived Air Concentration (radioactive isotopes) DAD - Die Another Day (James Bond) DADN - Data Access Directory Number DADT - Don't Ask, Don't Tell DAF - Diamonds Are Forever (James Bond) DAFS - Direct Access File System DAG - Directed Acyclic Graph DALY - Disability Adjusted Life Year DAPER - Department of Athletics, Physical Education, and Recreation [MIT] DAQ - Data AcQuisition DARE - Drug Abuse Resistance Education DARYL - data analysis robotic youth lifeform DAS - Distributed Antenna System DAS - Division of Arts and Sciences (Harvard) DAW - Digital Audio Workstation DC - Darn Cat (Disney) DC - Direct Control DC - Disconnected DC - Dublin Core (library cataloging) DC1 - Direct Control 1 (ASCII 17, XON) DC2 - Direct Control 2 (ASCII 18) DC3 - Direct Control 3 (ASCII 19, XOFF) DC4 - Direct Control 4 (ASCII 20) DCAD - Departmental Consulting and Application Development (IS&T) DCC - Direct Client-to-Client (IRC) DCCC - Democratic Congressional Campaign Committee DCDM - Digital Cinema [initiative] Distribution Master DCF - Distributed Coordination Function (IEEE 802.11) DCFL - Direct Coupled FET Logic DCI - Defensive CounterInformation Operations DCI - Director of Central Intelligence DCI - Drum Corps International DCIEM - Defence and Civil Institute of Environmental Medicine (Canada) DCM - Data Control Manager [moira] DCP - Device Control Protocol (UPnP) DCSB - Dry Cooked Sliced Beef DD - Decimal Degrees DDA - Demand Deposit Account (banking) DDBJ - DNA DataBase of Japan ddNTP - Dideoxyribonucleotide Triphosphate DDOH - Daily Dose of Haskell (-c bbaren) DDOS - Distributed Denial-of-Service [computer attack] DDR - Dance Dance Revolution DDR - Deutsche Democratische Republik (East Germany) DDR - Double Data Rate DDS - Direct Digital Synthesizer DEAS - Division of Engineering and Applied Sciences (Harvard) DEECS - Discover Electrical Engineering and Computer Science (MIT FPOP) DEB - DiEpoxyButane DEFCON - DEFense CONdition (5 best, 1 worst) DEL - DELete (ASCII 127) DEP - Data Execution Prevention DFA - Deterministic Finite Automaton DFEOJM - Down for everyone or just me? DFL - Dead Fucking Last DFL - Democratic-Farmer-Labor [Party] DFLP - Democratic Front for the Liberation of Palestine DFSG - Debian Free Software Guidelines DFZ - Default Free Zone (IP operations) DGC - DARPA Grand Challenge DGGE - Denaturing Gradient Gel Electrophoresis DH - Dear Husband or Dumb Husband, depending on context (term of affection) DH - Department Head DH - Designated Hitter (baseball) DH - Diffie-Hellman (cryptography) DHCP - Dynamic Host Configuration Protocol DHE - Diffie-Hellman ephemeral key exchange (TLS) DHMO - Dihydrogen Monoxide (water) DHS - Department of Homeland Security [U.S. Government] DHTML - Dynamic HyperText Markup Language DIAB - Do It Again, Better DIAF - Die In A Fire DICOM - Digital Imaging and Communications in Medicine DIMA - Digital Media Association DIMM - Dual In-line Memory Module DINO - Democrat In Name Only DISA - Defense Information Systems Agency DITC - Diggin' In The Crates DITR - Departmental Information Technology Resource (MIT IS&T) DJIA - Dow Jones Industrial Average (stock index) DLC - Department, Laboratory, or Center (MIT) DLC - Downloadable Content DLEC - Data Local Exchange Carrier DLF - Directed Light Fabrication DLIM - Double-sided Linear Induction Motor DLRG - Digital Library Research Group (MIT) DMA - Direct Marketing Association DMAT - Disaster Medical Assistance Team DMC - Distributed Mail Center (MIT) DMCA - Digital Millennium Copyright Act DME - Discover Mechanical Engineering (MIT FPOP) DMPC - Dungeon Master's Player Character DMS - Degrees, Minutes, Seconds DMSE - Department of Materials Science and Engineering (MIT) DMSO - DiMethyl SulfOxide DMT - N,N-dimethyltryptamine DNC - Democratic National Committee DNC - Do Not Call [list] DND - Department of National Defence (Canada) DND - Do Not Disturb (on telephones) DNE - Do Not Erase DNF - Did Not Finish (Sailboat Racing) DNFI - Daily News From Iceland (http://www.centrum.is/icerev/daily1.html) DNL - Discard to Next Line DNLC - Directory Name Lookup Cache DNR - Do Not Resuscitate DNRC - Dogbert's New Ruling Class DNSKEY - DNS Public Key (DNS) DNSSEC - DNS Security Extensions dNTP - Deoxyribonucleotide Triphosphate DO - DNSSEC OK (DNS) DOB - 2,5-Dimethoxy-4-bromoamphetamine DOCSIS - Data Over Cable Service Interface Specification DOE - Discover Ocean Engineering (MIT FPOP) DOF - Department of Facilities (MIT. ex-Physical Plant) DOI - Digital Object Identifier DOM - Document Object Model DOMA - Defense of Marriage Act DOQ - Digital Orthophoto Quad (USGS Map Type) DOR - Department of Revenue (Massachusetts) DORMCON - DORMitory COuNcil DoS - Denial of Service DOST - Data center Operations Services Team (IS&T W91 Operators) DOXP - Do X predicate (zephyr; inspired by lisp variable naming convention) DOXORY - Do X Or Y (or Z or ...) DP - Double Penetration DP - Director of Photography (Hollywood/film) DP - Dynamic Programming (algorithms) DPA - Differential Power Analysis DPIFCO - DormCon, Panhel, and IFC Office (MIT, W20-450) DPL - Debian Project Leader DPM - Doctor of Podiatric Medicine DPO - Digital Phosphor Oscilloscope DPOA - Durable Power of Attrorney DPRK - Democratic People's Republic of Korea (North Korea) DPS - Division for Planetary Sciences (American Astronomical Society) DPS - Dog and Pony Show DPT - Diptheria, Polio, Tetanus (vaccine) DPW - Department of Public Works DQS - Distributed Queueing System DRAGN - Double Radio Sources Associated with Galactic Nuclei DRBG - Deterministic random bit generator (cryptography) DRE - Direct Recording Electronic [voting] DRM - Digital Rights Management DRM - Direct Rendering Manager (Linux) DROID - Digital Record Object IDentification (PRONOM project, digital libraries) DRUMS - Detailed Revision/Update of Message Standards (IETF) DRY - Don't Repeat Yourself DS - Delegation Signer (DNS) DS - Differentiated Services (IETF) DS9 - Deep Space Nine (Star Trek) DSA - Debian Security Advisory DSA - Debian System Administration DSC - Differential Scanning Calorimetry DSC - Digital Signal Controller DSDD - Double Sided, Double Density (floppy disks) DSGC - Direction Selective Ganglion Cell DSL - Division of Student Life (MIT) DSLAM - Digital Subscriber Line Access Multiplexer DSM - Diagnostic and Statistical Manual of Mental Disorders DSN - Data Source Name DSN - Defense Switched Network DSN - Delivery Status Notification (email) DSO - Deep Sky Object DSQ - DiSQualified (Sailboat Racing) DT - Dance Troupe (MIT) DTD - Door-to-Door DTF - Din Tai Fung (Shanghainese cuisine) DTF - Down To Fuck (interpersonal relationships) DTI - Diffusion Tensor Imaging (medical imaging technique) DTMFA - Dump The MotherFucker Already (common advice from Dan Savage, Savage/Love columnist) DTR - Define The Relationship DTR - Detail Transaction Report (SAP) DTRT - Do The Right Thing DTS - Data Transformation Services DTS - Digital Theater Systems DTW - Destroy The World DTW - Detroit Metro Airport DTWT - Do The Wrong Thing (contrast with DTRT) DTYD - Drink Till You Drop (party at MIT) DUE - Dean for Undergraduate Education DUM - Depleted Uranium munitions DUMBO - Down Under the Manhattan Bridge Overpass (Brooklyn, NY) DURC - Dual Use Research of Concern (biotechnology) DUSP - Department of Urban Studies and Planning (MIT department) DVDCCA - DVD Copy Control Association DVI - DeVice Independent DVR - Digital Video Recorder DVT - Deep Vein Thrombosis DWB - Doctors Without Borders (Medecins Sans Frontiers) DWDM - Dense Wave Division Multiplexing DWIW - Do What I Want DWR - Department of Water Resources (California) DWV - Drain/Waste/Vent (plumbing) DWYW - Do What You Want DXM - dextromethorphan hydrobromide DXPC - Differential X Protocol Compressor E-CLUB - MIT Entrepreneurs Club EAFP - Easier to Ask Forgiveness than Permission (Python) EANAB - Equally Attractive Non-Alcoholic Beverage EAP - Employee Assistance Program EAP - Extensible Authentication Protocol (RFC 2284) EAPS - Earth, Atmospheric, and Planetary Sciences (Course 12) EAR - Export Administration Regulations EAX - name of a block cipher mode of operation; no expansion EBE - Extraterrestrial Biological Entity EBGOC - Executive Branch General Operational Command EBITDA - Earnings Before Income Taxes, Depreciation and Amortization EBV - Epstein-Barr Virus EBV - Event-Based Volunteer EC - East Campus [MIT dormitory] EC - Executive Committee [MIT SIPB] EC - Elliptic Curve EC - Educational Counselor [MIT] ECCC - Eastern Collegiate Cycling Conference ECD - English Country Dance (SCA) ECDHE - Elliptic Curve Diffie-Hellman ephemeral key exchange ECDSA - Elliptic Curve Digital Signature Algorithm ECE - Epizootic Catarrhal Enteritis ECM - Elliptic Curve Method (factoring method) ECMA - ... communication systems (as of 1994) ECMA - European association for standardizing information and ... ECMP - Equal Cost Multi Path ECN - Explicit Congestion Notification ECN - Eastman Color Negative (film chemical process) [Kodak] ECR - El Camino Real (California Highway 82) ED - Emergency Department (hospitals) EDB - Exhibitor Direct Billing (Technicolor) EDGE - Enhanced Data rates for GSM Evolution (GSM) EGOT - Emmy, Grammy, Oscar, Tony (entertainment awards) EGPRS - Enhanced General Packet Radio Service (GSM) EDR - Event Data Recorder (automobile accident recorder) EEE - Eastern Equine Encephalitis EELV - Evolved Expendable Launch Vehicle EEST - Eastern European Summer Time EETS - European Emissions Trading Scheme EFI - Extensible Firmware Interface EFL - Email Forwarding for Life (MIT Alumni Office) EGCS - Experimental GNU compiler suite EHCI - Extended Host Controller Interface [USB 2.0] EIBTI - Explicit Is Better Than Implicit EIC - Editor-in-Chief EIEIO - Enforce In-order Execution of I/O (PowerPC instruction) EIF - Elsewhere in Facebook EIGRP - Enhanced Interior Gateway Routing Protocol EIK - Eat-In-Kitchen (Real-Estate) EIM - Elsewhere in Meatspace EIP - Elsewhere In Personals (MIT Zephyr) EIRP - Effective Isotropic Radiated Power EIT - Engineer In Training (often used in place of "sorry") EIW - Elsewhere in Webspace EIZ - Elsewhere in Zephyr EJB - Enterprise JavaBeans ELF - Extended Log Format (W3C) ELI - Enzyme Linked ImmunoSorbent Assay ELI5 - Explain Like I'm Five (reddit) ELISA - Enzyme-Linked Immunoabsorbent Assay EM - Electicity and Magnetism EM - ElectroMagnetic EM - End of Medium (ASCII 25) EM - Expectation Maximization EMBL - European Molecular Biology Laboratory EMCC - Educational Media Creation Center (MIT) EME - Earth-Moon-Earth (radio) EMG - Electromyogram EMT - Electrical Metallic Tubing ENQ - ENQuire (ASCII 5) EOD - End Of Day (slang) EOD - Explosive Ordnance Disposal (Police) EOS - Educational On-Line System (MIT) EPCOT - Experimental Prototype Community Of Tomorrow (Disney) EPIC - Education and the Public Interest Center (U of Colorado) EPIC - Electronic Privacy Information Center EPO - Emergency Power Off EPO - Exclusive Provider Organization (cf HMO, PPO) EPR - Einstein, Podolsky, Rosen (nonlocal quantum effect) EPSP - Excitatory post-synaptic potential ER - Entity-Relationship (diagram or data model) ERC - Electrical Rule Check ERCP - Endoscopic Retrograde CholangioPancreatography ERE - Extended Regular Expression ERP - Enterprise Resource Planning ERW - Explosive Remnants of War ESB - Enterprise Service Bus ESB - Enterprise Storage and Backup (MIT IS&T) ESC - Electronic Stability Control (automotive) ESC - Escape (ASCII 27) ESD - Engineering Systems Division (MIT) ESD - Enlightened Sound Daemon ESG - Experimental Study Group (MIT) ESG - Environmental, Social, and Governance ESL - English as a Second Language ESO - Equipment Superior to Operator ESOL - English for Speakers of Other Languages (classes, tests) ESPN - Entertainment and Sports Programming Network (deprecated 1985) ESP - Educational Studies Program (MIT) ESPP - Employee Stock Purchase Plan ESR - Effective Series Resistance (capacitor spec.) ESR - Eric S Raymond ET - Epsilon Theta (MIT ILG) ETA - Edited To Add ETA - Euskadi Ta Askatasuna (Basque Homeland and Freedom) ETD - Explosive Trace Detection ETF - Exchange-Traded Fund ETH - Ethereum ETL - Extraction, Transformation, and Loading (data warehousing) ETOPS - Engines Turn Or Passengers Swim ETOPS - Extended Twin-engine OPerationS ETR - Estimated Time for Repair ETS - Entertainment Transportation Systems (ETS) ETTR - Estimated Time To Repair EULA - End User License Agreement EVOO - Extra Virgin Olive Oil EWS - Exchange Web Services EXPN - Expand (from SMTP) EZLN - Ejército Zapatista de Liberación Nacional (Zapatista Army of National Liberation) F - Fluorine F2F - Face to Face F2M - Female To Male (transgender) FAC - Friday Afternoon Club FACS - Fluorescence-Activated Cell Sorting FACT - Families Accessing Computer Technology (MIT) FAE - Field Application Engineer FAFSA - Free Application for Federal Student Aid FAI - Fully Automatic Installation FAIAP - For All Intents And Purposes FAIK - For All I Know FAM - File Alteration Monitor (Unix) FAP - Freshman Arts Program (MIT FPOP) FAQS - Friendly Alliance of Queers and Straights [org, MIT] (now ULC) FAS - Allergic Fungal Sinusitis FAS - Faculty of Arts & Sciences (Harvard) FAS - Federation of American Scientists FAST - Flexible Authentication Secure Tunneling FAYT - Find As You Type FBA - Fulfillment By Amazon FBC - Financial Business Consultant FBDO - Ferris Bueller's Day Off (movie) FBIS - Foreign Broadcast Information Service FBOFW - For Better or For Worse FCC - Face-Centered Cubic FCI - FSILG Co-op, Inc. (MIT) FCP - Fire Control Panel FCU - Federal Credit Union FD&C - Food Drug & Cosmetic FDC - Freshman Defense Corps (MIT) FDI - Foreign Direct Investment FE - Field Engineer FE - Iron FEE - Freshman Essay Evaluation (MIT) FEFN - Fifth East Friday Nights (East Campus) FERM - Finite Element Radiation Model FERPA - Family Educational Rights and Privacy Act [aka Buckley Amendment] FFC - Francis Ford Coppola FFF - Fetish Fair Fleamarket FFI - Foreign Function Interface FFM - Future Family Member FFS - For Fuck's Sake FFTQO - Feel Free To Queue Over FGI - Fucking Google It FHS - File Hierarchy Standard (Linux) FHW - Force Hot Water (heating system) FHWA - Federal Highway Administration FIAWOL - Fandom Is A Way Of Life FIFY - Fixed It For You FIIC - Fuck If I Care FIIK - Fuck If I Know FIINAH - Further Information Is Not Available Here FIIR - Fuck If I Recall FIIR - Fuck If I Remember FIL - Father-In-Law FINROP - Fixed In Next Revision Of Patch FIOS - Fiber-Optic Service (Residential Fiber Optic) (Verizon) FIS - Front Islamique du Salut (Islamic Salvation Front) (Algeria) FISA - Foreign Intelligence Surveillance Act FISH - Fluorescent In Situ Hybridization (genetics) FITB - Fill In The Blank(s) FITC - Fluorescein Isothiocyanate FIX - Federal Internet eXchange FJ - Fiji FJ - Flying Junior (type of sailboat) FJE - Festival Jazz Ensemble (MIT) FLA - Four Letter Acronym (see TLA) FLAC - Free Lossless Audio Codec (flac.sourceforge.net) FLAPS - Friendly Local Auto Parts Store FLL - Frequency Locked Loop (compare PLL) FLOSS - Free/Libre/Open-Source Software FLP - Freshman Leadership Program (MIT) FLPR - FLush the PRocess cache FLT - Fermat's Last Theorem FMA - Federal Marriage Amendment FMA - Full Metal Alchemist (anime) FMA - Fused Multiply Add (CPU instruction: d=a*b+c) FML - Fuck My Life FMLA - Family and Medical Leave Act FMRI - Functional Magnetic Resonance Imaging FMTYEWTK - Far More Than You Ever Wanted To Know FMTYERWTK - Far More Than You Ever Really Wanted To Know FMV - Fair Market Value FMV - Full Motion Video FNL - Faculty NewsLetter (MIT) FNMA - Federal National Mortgage Association [aka Fannie Mae] FOAD - Fall Over And Die FOAD - Fuck Off And Die FOAF - Friend Of A Friend FOB - Fresh Off the Boat FOC - Freshmen On Campus FOID - Firearms Owner Identification FOMO - Fear Of Missing Out FOP - Flowery Orange Pekoe (cf BOP) FOP - Freshman Outdoors Program (MIT FPOP) FOSDEM - Free and Open Source Software Developers' European Meeting FOSS - Free and Open Source Software FOTB - Fruit on the Bottom FOTCL - Falling Out Of The Chair Laughing FOTFL - Fall On The Floor Laughing FOTM - Flavor Of The Month FOTR - Fellowship Of The Ring FOUO - For Official Use Only FPB - Freshman Picture Book FPC - Faculty Policy Committee (MIT) FPOP - Freshman Pre-Orientation Program (MIT) FPS - First-Person Shooter (video game) FQN - Fully Qualified Name FRC - Factory Readiness Complete FRED - Flow Random Early Detection [Networking] FRET - Fluorescence Resonance Energy Transfer FROTH - FRiend Of The House FRP - Fiberglass Reinforced Plastic FRP - Final Resting Place FRWL - From Russia With Love (James Bond) FS - Field Separator (ASCII 28) FS - File Server (AFS) FSA - Flexible Spending Account FSB - Federal'naya Sluzhba Bezopasnosti (Federal Security Service) (Russia) FSB - Free Software Business FSB - Front Side Bus (PC hardware) FSBO - For Sale By Owner FSD - Fools Seldom Differ FSF - Folsom Street Fair (San Francisco) FSILG - Fraternity/Sorority/Independent Living Group FSL - Fox Searchlight (movies) FSMO - Flexible Single Master Operation FSSGB - Folk Song Society of Greater Boston FSSTND - File System STaNDard (linux) FSTDT - Fundies Say The Darndest Things FSVO - For Some Value(s) Of FSWE - Foreign Service Written Exam [US Dept of State] FSX - Faculty and Student Experience (group in MIT IS&T, under CSS) FTAA - Free Trade Area of the Americas FTBFS - Fails To Build From Source (Debian) FTCBFS - Fails To Cross Build From Source (Debian) FTD - Florists Transworld Delivery [corporate name] FTDI - Future Technology Devices International FTE - Full Time Equivalent (Employee) FTFF - Fix The Fucking Finder FTFY - Fixed That For You FTGOS - Further The Goals Of SIPB FTL - Flash Translation Layer (flash storage) FTM - Female To Male (transgender) FTR - For The Record FTSO - Fuck The Skull Of FTTP - Fiber to the Premises FTW - For The Win FUBAR - Failed UniBus Address Register (VAX) FUBB - Fucked Up Beyond Belief FUCK - Found Under Carnal Knowledge FUP - Freshman Urban Program (MIT FPOP) FUS - Fast User Switching (MacOS X) FVWM - F* Virtual Window Manager FVWM - Feeble Virtual Window Manager FWA - Flexible Work Arrangement FWP - First World Problem FX - Fracture (medical abbreviation) FYA - For Your Amusement FYE - For Your Entertainment FYEO - For Your Eyes Only (James Bond) FYIV - Fuck You, I'm Vested FYROM - Former Yugoslavic Republic of Macedonia FYSM - First Year Summer Mailing (MIT ASA) F_L - Faculty Liaison (MIT I/S) G/L - General Ledger [account] (SAP) GA - General Aviation GABA - Gamma AminoButyric Acid GABLES - Gay, Bisexual, and Lesbian Employees and Supporters (MIT) GAE - Google App Engine GAFIATE - (to) Get Away From It All GAFW - Google Apps For Work GAFYD - Google Accounts For Your Domain GAIM - Gaim (gaim.sourceforge.net) GAL - Global Address List (Exchange) GaMIT - Gays, lesbians, bisexuals, transgendered, and friends At MIT GARP - Generic Attribute Registration Protocol GARZC - Get A Real Zephyr Client (aroach) GAS - GNU ASsembler GASB - Governmental Accounting Standards Board GASP - General Academic Scheduling Program GBA - Game Boy Advance GBA - God Bless America GBC - Game Boy Color GBC - George Brown College (Toronto, Ontario, Canada) GBE - GigaBit Ethernet GBH - Grievous Bodily Harm GBIC - Gigabit Interface Converter (module used with Sun hardware) GBIS - Greater Boston Invitational Sing GBLS - Greater Boston Legal Services GBM - General Body Meeting GBP - Great Britain Pounds (currency) GBTW - Get Back To Work (as in STFU & GBTW) GBYSO - Greater Boston Youth Symphony Orchestras GCA - Graphic Communications Association (SGML) GCC - GNU Compiler Collection GCC - Gulf Cooperation Council (Arabian/Persian Gulf) GCD - Greatest Common Divisor GCF - Greatest Common Factor GCHQ - Government Communications Headquarters (UK) GCM - Galois/Counter Mode (block cipher mode) GCN - Nintendo Gamecube GCS - GNU Coding Standards GCS - Grand Central Station GCSE - General Certificate of Secondary Education GCT - Grand Central Terminal (NYC) GCW - Gross Combination Weight GCWR - Gross Combination Weight Rating GDFR - Global Digital Format Registry (digital preservation) GDP - Guanosine Diphosphate GDR - German Democratic Republic (East Germany) GDS - Global Distribution System (travel industry) GECD - Global Education & Career Development (MIT) GEF - Guanine nucleotide Exchange Factor GEL - Gordon Engineering Leadership (Program) (MIT) GENA - Generic Event Notification Architecture (UPnP) GETS - Government Emergency Telephone System GFD - God Fucking Damnit GFD - God Fucking Damn It GFE - GNU Font Editor GFE - Government Furnished Equipment GFI - Ground Fault Interrupt GFP - Green Fluorescent Protein GFS - Google File System GFS - Global Forecast System GFW - Great Firewall (China) GFY - Go Fuck Yourself GGI - General Graphics Interface GGP - Golden Gate Park (San Francisco, CA) GHB - gammahydroxybutyrate GIF - General IP Forwarding GIMP - GNU Image Manipulation Program GIMPS - Great Internet Mersenne Prime Search GIPB - GTE Internetworking Powered by BBN (compare SIPB) GIR - General Institute Requirement GIS - Google Image Search GK - Gate Keeper GL - General Ledger [account] (SAP) GL - Good Luck GL - Graphics Library GLAD - Gay and Lesbian Advocates and Defenders GLaDOS - Genetic Lifeform and Disk Operating System (Portal) GLHF - Good Luck High Five GLM - Gate Level Model (Sun driver for SYmbios 53c875) GLO - Greek Letter Organization GLUT - OpenGL Utility Toolkit GLWT - Good Luck With That GM - Genetically Modified GMAL - Graduate (student) Member At Large (MIT ASA) GMAT - Graduate Management Admissions Test GMAW - Gas Metal Arc Welding GML - Goldfarb, Mosher, Lorie (IBM) GMO - Genetically Modified Organism GMP - GNU Massive Precision (GNU big number library) GMS - Global Messaging System GMTA - Great Minds Think Alike GNFS - General Number Field Sieve (factoring method) GNO - General Non-Operating (MIT SAP) GNOME - GNU Network Object Model Environment GNUPG - GNU Privacy Guard GO - General Operating (MIT SAP) GORP - Good Old Raisins and Peanuts GOST - GOsudarstvennyy STandart (Russian technical standards) GOTV - Get Out The Vote GPA - Grade Point Average GPCR - G-Protein Coupled Receptor GPG - GNU Privacy Guard GPGPU - General Purpose GPU GPO - Group Policy Object (Active Directory) GPRS - General Packet Radio Service (GSM) GPWS - Ground Proximity Warning System (Aviation) GPU - Graphics Processing Unit GQMF - GC Motherfucker (a hot, stylish man that would not be out of place in the pages of the magazine GQ) GRAS - Generally Regarded As Safe GRE - Graduate Record Examination GRO - Generic Receive Offload GRT - Graduate Resident Tutor (MIT) GS - Group Separator (ASCII 29) GSA - Gay-Straight Alliance GSAS - Graduate School of Arts & Sciences (Harvard) GSAVE - Global Struggle Against Violent Extremism GSB - Girl Scout Benefit (MIT AI Lab) GSB - Graduate School of Business (Stanford) GSC - Graduate Student Council (MIT) GSE - Government Sponsored Enterprises (US Government e.g FNMA, FHLMC) GSF - Geek Social Fallacy GSL - GNU Scientific Library GSL - Graduate Student Lunch GSM - Ginger Snap Molasses (Toscis) GSN - Gigabyte System Network (HIPPI-6400) GSN - Graduate Student News (MIT GSC) GSO - GNU SuperOptimizer GSO - Graduate Student Office (MIT) (see ODGE) GSO - Generic Segmentation Offload GSOC - Google Summer of Code GSOH - Good Sense Of Humor GSR - Gigabit Switch Router GSS-API - Generic Security Service Application Programming Interface GSSAPI - Generic Security Service Application Programming Interface GSW - Gun Shot Wound GTA - Grand Theft Auto GTAW - Gas Tungsten Arc Welding GTBOS - Glad To Be Of Service GTD - Get Things Done GTFO - Get The Fuck Out GTFTS - Go the Fuck to Sleep GTK - GIMP Toolkit GTM - Global Traffic Manager (F5) GTMO - Guantanamo Bay Naval Station, Cuba GTP - Guanosine Triphosphate GTS - Geographic Text Search GVW - Gross Vehicle Weight GVWR - Gross Vehicle Weight Rating GWAVE - Global War Against Violent Extremism GWOT - Global War On Terrorism GWT - Google Web Toolkit GX - General Exhaust (MIT PP) GX - Graphics Accelerator H - Hydrogen h - Planck's constant HAND - Have A Nice Day HASS - Humanities, Arts, and Social Sciences (MIT) HATEOAS - Hypermedia as the Engine of Application State HBS - Harvard Business School HBT - Heterojunction Bipolar Transistor HBV - Hepatitis B Virus HCIC - House Couples Information Chair (ET) HCL - Hardware Compatibility List HCMF - HardCore Mother-Fucker HCS - Harvard Computer Society HCV - Hepatitis C Virus HD - High Definition (TV) HDHP - High Deductible Health Plan HDML - Handheld Device Markup Language HDPE - High Density Polyethylene (Recycle code #2) HDR - High Data Rate (cellular/PCS CDMA system) HE - Helium HE - High Efficiency (laundry detergent) HE - High Explosive HEAT - High Explosive Anti-Tank (warhead) HELOC - Home Equity Line Of Credit HEPA - High Efficiency Particulate Arrestance HF - hydrofluoric acid HFA - Harry Fox Agency HFCS - High Fructose Corn Syrup HFS - Housing and Food Services, Department of (MIT) HFPS - Hi-Fi Pizza and Subs (Central Sq.) HFYS - Hear From You Soon HGP - Human Genome Project HHG - High Harmonic Generation HHG2G - Hitchhiker's Guide to the Galaxy HHGTTG - HitchHiker's Guide To The Galaxy (book) HHOK - Ha Ha, Only Kidding HHOS - Ha Ha, Only Serious HHVF - Ha ha, very funny HINAM - Haskell Is Not About Monads HIPAA - Health Insurance Portability and Accountability Act of 1996 HITS - Headend In The Sky HK - Hong Kong HKN - Eta Kappa Nu (EECS honor society) HKP - HTTP Keyserver Protocol (OpenPGP) HKPS - HTTP Keyserver Protocol Secure (OpenPGP) HLA - Human Leukocyte Antigens HLR - Harvard Law Review HM - HiveMinder.com HM - Honorary Member (of the MIT Alumni Association) HMAC - Hash Message Authentication Code HMM - Hidden Markov Model HMMT - Harvard-MIT Math Tournament HMMWV - High Mobility Multipurpose Wheeled Vehicle (US Military) HMO - Health Maintenance Organization HMS - Harvard Medical School HN - Hacker News (news.ycombinator.com) HOAS - Hold On A Second HOF - Hall Of Fame HOTD - Hate Of The Day HOV - High Occupancy Vehicle HPI - High Pressure Injection HPJD - Hewlett-Packard JetDirect HPKP - HTTP Public Key Pins HPLC - High Performance Liquid Chromatograph[y] HPV - Human Papillomavirus HPV - Human-Powered Vehicle HRC - Hillary Rodham Clinton HRC - Human Rights Campaign HRO - Ham Radio Outlet (store in New Hampshire) HRT - Hostage Rescue Team HRT - Hudson River Trading HSA - Health Savings Account HSDPA - High-Speed Downlink Packet Access (3.5G mobile telephony) HSG - Housing Strategy Group (MIT) HSMS - High Speed Meteor Scatter (ham radio) HSN - Home Shopping Network HSPA - High Speed Packet Access (telephony protocol) HSSDC - High Speed Serial Data Connection (Fibre Channel) HSSI - High Speed Serial Interface (up to ~50Mbps) HST - Hacker Standard Time HST - Health Sciences and Technology (Harvard-MIT department) HSTS - HTTP Strict Transport Security HSUPA - High-Speed Uplink Packet Access (3.5G mobile telephony) HSV - Hue Saturation Value (colour encoding scheme) HSV - Huntsville/Decatur, AL International Airport HT - Hat tip (credit for a source of e.g. a blog post) h/t - Hat tip (credit for a source of e.g. a blog post) HTF - Hard To Find (slang, eBay) HTIB - Home Theater In a Box HTGAMIT - How To Get Around MIT (publication) HTML - HyperText Markup Language HTP - Horrifying Trashcan Transport Protocol HTPC - Home Theater PC HTTPS - HyperText Transfer Protocol over Transport Layer Security (WWW, RFC 2818) HUCA - Harvard University Cycling Association HUP - Heisenburg Uncertainty Principle HVRL - High Voltage Research Laboratory HW - Hot Water (Real-Estate) HWFP - HardWood Fuel Pellet (mushroom growth medium) I14Y - Interoperability I - Iodine I - one (Roman numeral) I, I - see 'I,I' I,I - I have no point here, I just like to say (CMU) IAC - Interpret As Command (Telnet) IADL - Instrumental Activity of Daily Living IAFD - Internet Adult Film Database (Internet, WWW, DB) IAGSDC - International Association of Gay Square Dance Clubs IAIP - Directorate of Information Analysis and Infrastructure Protection [US DHS] IANA - I Am Not A IANAD - I Am Not a Doctor IANAL - I Am Not a Lawyer IANAS - I Am Not a Student IAP - Independent Activities Period (MIT) IAPU - Internet Anti-Piracy Unit (IFPI) IAW - In Another Window IAWT - I Agree With This IAWTC - I Agree With This Comment IAWTP - I Agree With This Post IB - International Baccalaureate IBC - Independent Breweries Company IBD - Investor's Business Daily IBEW - International Brotherhood of Electrical Workers IBFS - International Bureau Filing System IBIWISI - I'll believe it when I see it. IBO - International Baccalaureate Organization IBS - Irritable Bowel Syndrome IBSS - Independent Basic Service Set (IEEE 802.11) IBTSO - I Bemoan The State Of IBTSOCS - I Bemoan The State Of Computer Science IC - Informed Consent (health care) ICA - Institute of Contemporary Art (Boston) ICANN - Internet Corporation for Assigned Numbers and Names ICB - Internet Citizens' Band ICCCN - IEEE International Conference on Computer Communications and Networks ICD - Implantable Cardioverter Defibrillator (medical device) ICD - International Statistical Classification of Diseases and Related Health Problems (World Health Organization) ICE - In Case of Emergency ICE - Internal Combustion Engine ICEO - Institute Community and Equity Officer ICIC - Intercollegiate Ice Cream Ride (MIT Cycling, HUCA) ICIDH - International Classification of Impairments, Disabilities, and Handicaps (World Health Organization) ICFP - International Conference on Functional Programming ICO - Initial Coin Offering ICP - Insane Clown Posse (band) ICPD - International Conference on Population and Development ICQ - I Seek You (communications program by Mirabilis) ICS - Ice Cream Sandwich (Android OS version 4.0) ICS - Incident Command System ICTAP - Interagency Career Transition Assistance Plan ICU - Intensive Care Unit ICYMI - In Case You Missed It ICYWC - In Case You Were Curious ID - Industrial Design ID - Intelligent Design (Creationist theory) IDA - Interactive Disassembler IDB - Involuntarily Denied Boarding IDC - International Design Center [MIT] IDDM - Insulin Dependent Diabetes Mellitus (type 1 diabetes) IDF - Israel Defense Forces IDGI - I Don't Get It IDIC - Infinite Diversity in Infinite Combinations (Star Trek) IDL - International Date Line IDM - Intelligent Dance Music IDS - Intrusion Detection System IDSL - ISDN Digital Subscriber Line IDTS - I Don't Think So IED - Improvised Explosive Device IEICE - Institute of Electronics, Information and Communication Engineers IEM - Iowa Electronic Markets (http://www.biz.uiowa.edu/iem/) IERS - International Earth Rotation Service IF - Immunofluorescence IF - Interactive Fiction IFC - Industry Foundation Classes (architectural CAD) IFC - Inside Front Cover (magazine layout) IFC - InterFraternity Council IFFT - Inverse Fast Fourier Transform IFPI - International Federation of the Phonographic Industry IGBT - Insulated Gate Bipolar Transistor IGEM - International Genetically Engineered Machine Competition IGRP - Interior Gateway Routing Protocol IHC - Immunohistochemistry IHMBCO - In My Humble But Correct Opinion IHNJ - I Have No Joke [often followed by "IJLS"] IHNPH - I Have No Point Here (CMU zephyr) IHNPH,IJLS - I Have No Point Here, I Just Like Saying (CMU zephyr) IHOP - International House Of Pancakes IHT - International Herald Tribune IHTFP - I Hack To Find Places IHTFP - I Hate This Fucking Place IHTFP - I Have Truly Found Paradise IHTFP - See IID - Independent Identically-Distributed (random variables) IINM - If I'm Not Mistaken IIR - Infinite Impulse Response IIRC - If I Recall Correctly IIS - Internet Information Server IIT - Indian Institute of Technology IIUC - If I Understand Correctly IJLS - I Just Like Saying (CMU Zephyr) IJWTS - I Just Want To Say IKE - Internet Key Exchange (IPSec) IKR - I Know, Right? ILA - In-Line Amplifier ILC - International Linear Collider ILEC - Incumbent Local Exchange Carrier ILG - Independent Living Group (MIT) ILL - Interlibrary Loan ILM - Industrial Light & Magic (special effects company) ILP - Industrial Liaison Program [MIT] ILP - Instruction-Level Parallelism ILP - Integer Linear Programming ILTFP - I Love This Place (c.f. IHTFP) ILTG - I Love That Guy IM - Instant Message IM - Instant Messenger (trademark of AOL) IM - Internet Messenger IMAIL - Interdepartmental Mail IMMD - It Made My Day IME - In My Experience IMES - Institute for Medical Engineering & Science (MIT) IMHBCO - In My Humble (But Correct) Opinion IMO - International Mathematical Olympiad IMPP - Inner Mongolian People's Party IMPP - Instant Messaging and Presence Protocol IMS - Incident Management System IMS - Instructional Management Systems IMSLP - International Music Score Library Project IMU - In My Understanding IND - International Nomenclature of Diseases (CIOMS and WHO) IND - Investigational New Drug INGO - International Non-Governmental Organization INMARSAT - International Marine/Maritime Satellite INR - Bureau of Intelligence and Research [U.S. Department of State] INWG - InterNetworking Working Group [Internet history] IOC - Inversion of Control (software engineering) IODT - Ink On Dead Trees IOL - International Linguistics Olympiad IOT - Internet of Things IOTTMCO - intuitively obvious to the most casual observer IP - In-Patient (healthcare) IPA - India Pale Ale [beer] IPA - International Phonetic Alphabet IPAB - Independent Payment Advisory Board IPF - IP Filter (*BSD) IPMI - Intelligent Platform Management Interface IPO - Intellectual Property Office (MIT) IPOP - Interim Planning Overlay Permit (Cambridge) IPP - Important Putz Poll (ec-discuss) IPR - Intellectual Property Rights IPS - Induced Pluripotent Stem cell (Biology) IPSEC - IP SECurity IPSP - Inhibitory post-synaptic potential IR - Institutional Repository (digital library) IRB - Institutional Review Board IRDF - Independent Residence Development Fund (MIT) IRI - Internationalized Resource Identifier (WWW, rfc3987) IRL - Inter-Repeater Link (networking) IRLP - Internet Radio Linking Project IRMP - IAP Research Mentor Program (MIT) IRR - Internet Routing Registry IRTA - I Read That As IRV - Instant Runoff Voting IS - Information Systems (MIT) IS&T - Information Services and Technology ISAC - Information Sharing and Analysis Center ISAGN - I See A Great Need ISCII - Indian Script Code for Information Interchange ISDA - Infrastructure Software Development and Architecture [MIT IS&T] ISI - Inter-Services Intelligence (agency, Pakistan) ISIS - International Spline Interface Standard (bicycles) ISN - Institute for Soldier Nanotechnologies (MIT) ISNT - (see IS&T) (whats 'IS&T') ISO - In Search Of ISO - Incentive Stock Option ISO - Independent System Operator (electrical power transmission) ISO - International Organization for Standardization (not an acronym) ISO - International Students Office (MIT) ISP - Integrated Studies Program (MIT) ISRN - International Standard Technical Report Number IST - Information Services and Technology (See IS&T) ISTAB - IS&T Student Technology Advisory Board ISTM - It Seems To Me ISTR - I Seem To Recall ISWC - International Standard Musical Works Code ISWR - Current Standing Wave Ratio ISWSBT - I Think We Should Be Told ITA - I Totally Agree ITA - Intent For Adoption (Debian) ITAR - International Traffic in Arms Regulation (succeeded by EAR) ITCS - Innovations in Theoretical Computer Science ITES - Information Technology Enabled Services ITLT - Information Technology Leadership Team (MIT IS) ITMFA - Impeach The MotherFucker Already ITMS - ITunes Music Store ITP - Intent To Package (Debian) ITPIR - If The Price Is Right ITS - Intelligent Transportation Systems ITSS - Information Technology Security Support (MIT IS&T) ITT - In This Thread ITTM - I Think They Mean ITYM - I Think You Mean IUI - Intelligent User Interface IU - Installable Unit (Maven / Tycho) IUPAC - International Union of Pure and Applied Chemistry IVF - In Vitro Fertilization IVP - Initial Value Problem (differential equations) IW - Information Warfare IWG - Instant Win Game IYD - In Your Dreams IYD - Increase Your Dosage IYKWIM - If You Know What I Mean IZP - Important Zephyr Poll (cf. IPP) J/K - Just Kidding J2EE - Java 2 platform, Enterprise Edition J2ME - Java 2 platform, Micro Edition J2SE - Java 2 platform, Standard Edition JAAS - Java Authentication and Authorization Service JAPH - Just Another Perl Hacker JAPH - Just Another Perl Huckster (derogatory) JAR - Java ARchive JATO - Jet Assisted Take Off JBOD - Just a Bunch of Disks (compare RAID) JC - Jerusalem Cafe JC - Just Curious JCAHO - Joint Commission on Accreditation of Health Organizations JCL - Junior Classical League JCP - Java Community Process JCT - JunCTion. (highway abbrev.) JDB - Java Debugger JDF - Job Definition Format (prepress) JEE - Java Enterprise Environment JFC - Jesus F***ing Christ JFGI - Just F***ing Google It JFGI - Just Fucking Google It JFYI - Just For Your Information JHU - Johns Hopkins University JKR - J. K. Rowling JMS - Java Message Service JND - Just Noticeable Difference JNDI - Java Naming and Directory Interface JNI - Java Native Interface JNLP - Java Network Launching Protocol JOC - Joy of Cooking (cookbook) JP - Jamaica Plain (Boston) JP - Justice of the Peace JPA - Java Persistence API JRA - Juvenile Rheumatoid Arthritis JRE - Java Runtime Environment JS - JavaScript JSDT - Java Shared Data Toolkit JSF - Java Server Faces JSF - Joint Strike Fighter JSF - Joint Strike Fighter (military) JSON - JavaScript Object Notation JSP - JavaServer Pages JSR - Java Specification Request JTA - Java Transaction API JTRS - Joint Tactical Radio System (US DoD) JV - Joint Venture JV - Journal Voucher [MIT Accounting] JVM - Java Virtual Machine JWGC - Jabber Windowgram Client JWST - James Webb Space Telescope KADB - Kerberos Authentication DataBase (AFS) KAFB - Kirtland Air Force Base KAS - Kerberos Authentication Server (AFS) KBO - Kuiper Belt Object KCD - Kerberos Constrained Delegation (Microsoft Extension) KDBM - Kerberos Database Management Service KDE - K Desktop Environment (CDE clone) KDE - Kool Desktop Environment (early expansion of KDE) KEF - Keflavik International [Airport Code] KFC - Kentucky Fried Chicken KINK - Kerberized Internet Negotiation of Keys KIT - keep in touch KITT - Knight Industries Two Thousand (Knight Rider) KKMP - Kerberized Key Management Protocol (Kerberized ipsec negotiation and others ietf-kink-request@vpnc.org) KLT - Kresge Little Theater (MIT) KM - Knowledge Management KML - Keyhole Markup Language KMP - Knuth-Morris-Pratt (string search algorithm) KMS - Key Management Service (Windows) KNF - Kernel Normal Form (4.4BSD code style) KNI - Katmai New Instructions (Intel Pentium III, renamed SSE on release) KOL - Kingdom of Loathing KP - Kitchen Patrol (Military Slang) KPOP - Kerberized Post Office Protocol KROD - KResge Oval Disc KS - Kansas KSA - Kingdom of Saudi Arabia KSG - Kennedy School of Government (Harvard) KSG - Key Stream Generator KSV - Kassakian, Schlect, and Verghese (authors, Principles of Power Electronics) KTH - Kungliga Tekniska Hoegskolan(Royal Inst. of Technology, org., Sweden) KVM - Kernel Virtual Memory KVM - Keyboard/Video/Mouse KVM - Kernel-based Virtual Machine (Linux) L - fifty (Roman numeral) L10N - LocalizatioN (see i18n) L2T - Learn To Type LA - el pueblo de nuestra senora la reina de Los Angeles de porciuncula LA - Laboratory Assistant (MIT 6.170) LABIA - Liberate Apes Before Imprisioning Apes Movement LALD - Live And Let Die (James Bond) LALR - LookAhead Left Recursive LAMP - Library Access to Music Project (MIT SIPB) LAMP - Linux + Apache + MySQL + Php (Web) LARP - Live Action Role Playing LART - Long and Rectangular Thing (2x4, Usenet -- see also LART) LART - Luser Attitude Readjustment Tool (Usenet) LASIK - Laser-In-SItu Keratomileusis [vision correction] LASL - Los Alamos Scientific Laboratory LATFH - Look At This Fucking Hipster LBB - Little Brown Bird (birding) LBJ - Lyndon Baynes Johnson LBPIA - Toronto's Lester B. Pearson International Airport LBS - Local Bike Shop LBS - Location-Based Service LCM - Lazy Code Motion LCM - Least Common Multiple LCS - Laboratory for Chocolate Science [MIT] LD - Lethal Dosage LD - Linkage Disequilibrium LDIF - LDAP Interchange Format (RFC 2849) LDPE - Low Density Polyethylene (Recycle code #4) LDR - Long Distance Relationship LDS - Labor Distribution System [MIT?] LEES - Lab for Electronic and Electromagnetic Systems LEF - Large Event Fund (MIT) LEM - Lutheran Episcopal Ministry (MIT) LEO - Law Enforcement Officer LER - Light Emitting Resistor (as opposed to Smoke Emitting Diode) LFMC - Liquid-tight Flexible Metal Conduit LFM - Leaders for Manufacturing (MIT) LFMF - Learn From My Fail LFN - La Femme Nikita (Movie 1990, TV show 1997-) LFN - Long Fat Network (High latency, high bandwidth; also "elephant.") LFS - Log-structured File System LFSR - Linear Feedback Shift Register (crude pRNG) LGC - Living Group Council (MIT) LGPL - Lesser [formerly Library] General Public License (GNU) LGTM - Looks Good To Me LGV - LymphoGranuloma Venereum (disease) LHC - Large Hadron Collider LHOOQ - Elle a chaud au cul (Duchamp wordplay/pun) LI - Lithium LIBOR - London Interbank Offered Rate LIDS - Laboratory for Information and Decision Systems (MIT) LIE - Long Island Expressway LIGA - Lithographie, Galvanoformung, Abformung (Lithography, Electroplating and Molding) LIGO - Laser Interferometer Gravitational Wave Observatory LIM - Linear Induction Motor LIMS - Laboratory Information Management System(s) LINUX - Linux Is Not UniX (backronym) LIRR - Long Island Railroad (NY) LISP - Locator/ID Separation Protocol (IETF) LJ - Linux Journal (linuxjournal.com) LJ - LiveJournal LKCD - Linux Kernel Crash Dumps LKML - Linux Kernel Mailing List LL - MIT Lincoln Lab LLAP - Live Long And Prosper LLARC - Language Learning And Resource Center (MIT) LLC - Limited Liability Company LLVM - Low Level Virtual Machine (Compiler/toolchain toolkit) LMAO - Laughing My Ass Off LMAP - Lightweight MTA Authentication Protocol LMBTFY - Let Me Bing That For You LMC - Let me see LMF - La Maison Francaise (French House) LMG - Light Machine Gun LMGTFY - Let Me Google That For You (see also lmgtfy.com) LMK - Let Me Know LMO - Living Modified Organism LMP - Last Menstrual Period LMS - Learning Management System LMST - Local Mean Solar Time LMTP - Local Mail Transport Protocol LNA - Low-Noise Amplifier LNF - Late Night Food LNI - Line Number Identification [telephony] LNP - Local Number Portability [telecom] LOAF - Linux On A Floppy LOAF - List Of All Friends LOC - Library Of Congress LOCKSS - Lots Of Copies Keeps Stuff Safe (digital libraries) LOF - Local Oscillator Frequency LOL - League of Legends LOM - Lights-Out Management LOPIP - list of periodic informational postings (FAQs) LOPSA - League of Professional System Administrators (lopsa.org) LOTR - Lord Of The Rings LP64 - Long, Pointer 64 bit LPB - Low Pinging Bastard (Quake) LPGA - Ladies Professional Golf Association LPOC - Last Port Of Call LPOS - Losing Piece of Shit LPP - Lowfade Positive Print (Eastman Kodak) LPR - License Plate Recognition LPZBHB - Leonard P. Zakim Bunker Hill Bridge LR - Left Recursive LRF - Little Rubber Feet ls - LiSt files (UNIX command) LS - Locking Shift LS0 - Locking Shift 0 (ASCII 15) LS1 - Locking Shift 1 (ASCII 14) LSA - Linguistic Society of America LSA - Local Security Authority (Windows) LSASS - Local Security Authority Subsystem Service (MS Windows) LSB - Linux Standard Base LSD - Lambda Sigma Delta (MIT, Senior House) LSD - Leland Speech and Debate LSI - Lame SIPB Innuendo LSJUMB - Leland Stanford Junior University Marching Band LSM - Linux Security Modules LSNA - Large Signal Network Analyzer LSOF - LiSt Open Files (UNIX command) LSRR - Loose Source and Record Route LSS - Long Story Short LST - Local Solar Time LTC - License To Carry (gun license) LTC - Litecoin LTE - Long Term Evolution (4G Wireless standard) LTI - Linear Time-Invariant LTK - License To Kill (James Bond) LTNS - Long Time No See LTS - Leaning Toothpick Syndrome (perl) LTS - Long Term Support (generally of Ubuntu; a release supported for 3-5 years) LUG - Linux Users Group LVAC - List Visual Arts Center (MIT) LVD - Low-Voltage Differential (SCSI) LVS - Linux Virtual Server LWR - Light Water Reactor LYLAS - Love You Like A Sister LZ - Lempel-Ziv (compression) M - thousand (Roman numeral) M1 - MediaOne M17N - Multilingualization (see i18n, l10n) M2F - Male To Female (transgender) MA - Massachusetts MAA - Mathematical Association of America MAAB - Massachusetts Architectural Accessibility Board MACHO - Massive And Compact Halo Object (possible form of dark matter) MACS - Magnetic Activated Cell Sorting (trademark of Miltenyi Biotec) MAFIAA - Music And Film Industry Association of America MAG - Metal Active Gas (welding) MAGI - Modified Adjusted Gross Income MANET - Mobile Ad-hoc NETwork MAOI - MonoAmine Oxidase Inhibitor (type of antidepressant) MAP - Mitogen-Activated Protein MAPK - MAP Kinase MAPKK - MAP Kinase Kinase MAPKKK - MAP Kinase Kinase Kinase MARS - Military Affiliated Radio Service MARTA - Metropolitan Atlanta Rapid Transit Authority MAS - Media Arts and Sciences (MIT) MASH - MAke SHell (SIPB) MASH - Multimedia Application SHell (UCB) MASSDOR - MASSachusetts Department of Revenue MB - Manitoba (Canadian Province) MBE - Mail Boxes Etc. MBL - (Woods Hole) Marine Biological Laboratory MBR - Master Boot Record MBS - Mortgage-Backed Security MBT - Minuteman Bike Trail MBTA - Massachusetts Bay Transportation Authority MBTI - Myers Briggs Type Indicator (Psychology) MBZ - Must Be Zero MCA - Medicare Coverage Analysis (health care billing) MCA - Machine Check Architecture MCAS - Massachusetts Comprehensive Assessment System MCAT - Medical College Admissions Test MCD - milli-candela (unit of luminescence) MCDHH - Massachusetts Commission for the Deaf and Hard of Hearing MCH - Memory Controller Hub MCI - Mass Casualty Incident MCNS - Multimedia Cable Network System MCO - Modern Chess Openings (reference work) MCS - Multiple Chemical Sensitivity MCS/CH - Multiple Chemical Sensitivity/Chemical Hypersensitivity MD - Molecular Dynamics MD - Machine-Dependent MDA - 3,4-methylenedioxyamphetamine MDA - Mail Delivery Agent MDC - Metropolital District Commission MDC - Movement for Democratic Change (Zimbabwe) MDD - Modular Dependency Diagram MDE - Major Depressive Episode MDF - Medium Density Fibreboard MDI - Metered Dose Inhaler MDMA - 3,4-methylenedioxymethamphetamine MDNS - Multicast Domain Name System (UPnP) MDSR - Modulator-Demodulator Software Radio ME - Middle English MELPA - Milkypostman's Emacs Lisp Package Archive MEM - MicroElectroMechanical MEMA - Massachusetts Emergency Management Agency MEMS - MicroElectroMechanical Systems MEPAS - multifunctional expandable portable audio system METAR - Aviation Routine Weather Report (NWS standard, trans. French) METS - Metadata Encoding and Transmission Standard (digital library) MEU - (Henry Fowler's) Modern English Usage (OUP, ed. by R.W. Burchfield) MFA - Museum of Fine Arts (Boston) MFA - Multi-Factor Authentication MFJ - Married Filing Jointly (tax status) MFL - Merged Flash & Logic device MFN - Most Favored Nation (international trade) MFS - Metropolitan Fiber Systems (telco) MG - Magnesium MGL - Massachusetts General Laws MGP - Manufactured Gas Plant MGSE - Mint GNOME Shell Extensions MH - (RAND/UCI) Mail Handler MI - Myocardial Infarction (heart attack) MIB - Men in Black MICU - Medical Intensive Care Unit MID - Mobile Internet Device MIF - milk-in-first (tea term) MIG - Metal Inert Gas (welding) MII - Media Independent Interface (Ethernet) MIL - Milk-in-last (tea term) MIL - Mother-in-Law MILF - Mom I'd Like to Fuck MILF - Moro Islamic Liberation Front MILSPEC - Military Specification MIMO - Multiple-Input Multiple-Output (radio communications) MING - Ming is not GaLib MINK - MINimum Kerberos installation (M.I.T., Windows) MIPB - Munchkin Information Processing Board MIPS - Meaningless Indicator of Processor Speed MIREOT - Minimum Information to Reference an External Ontology Term (RDF) MISTI - MIT International Science and Technology Initiatives MITAC - MIT Activities Committee MITAG - MIT Assassins' Guild MITAI - MIT Amnesty International (cf. AI) MITALY - Italian Students Association at MIT MITCET - MIT Council on Educational Technology MITERS - MIT Electronic Research Society MITES - Minority Introduction To Engineering and Science (MIT) MITFCU - MIT Federal Credit Union MITFSC - MIT Figure Skating Club MITM - Man-In-The-Middle (Network Attacks) MITNA - MIT Nautical Association MITOC - MIT Outing Club MITPEG - MIT Portable Electronics Group MITRFC - MIT Rugby Football Club MITSFS - MIT Science Fiction Society MITSI - MIT Students for Israel MITSIS - MIT Student Information System MITSO - MIT Symphony Orchestra MITWE - MIT Wind Ensemble MITYN - More Information Than You Needed (to know) (CalTech) ML - Maximum Likelihood MLA - Modern Language Association MLB - Major League Baseball MLIA - My Life is Average MLK - Martin Luther King, Jr. MLM - MultiLevel Marketing MLME - MAC sublayer management entity (IEEE 802.11) MLP - My Little Pony MLP:FIM - My Little Pony: Friendship is Magic (TV series) MLS - Major League Soccer (US) MMC - MitoMycin C MMF - Money Market Fund MMIC - Monolithic Microwave Integrated circuit MMM - Mythical Man Month (Brooks/IBM) MMORPG - Massively Multiplayer Online Role Playing Game MMPI - Minnesota Multiphasic Personality Inventory MMR - Measles, Mumps, Rubella (vaccine) MMR - MisMatch Repair mechanism (genetics) MMR - Multi-Master Replication MMS - Multimedia Messaging Service [cell phones] MNCRR - Metro-North Commuter Railroad [now MNR] MNG - Multiple-image Network Graphics [format] MNR - [MTA] Metro-North Railroad (NY/NJ/CT) MOAB - Massive Ordnance Air Burst MOAB - Mother Of All Bombs MOAS - Member(s) of (Attractive/Appropriate) Sex MOBO - MOtherBOard MODS - Metadata Object Description Schema (digital library) MOFA - Museum of Fine Arts (Boston) MOMA - Museum Of Modern Art (New York) MOMB - Museum of Modern Betas MOPIER - Multiple Optical coPIER MOS - Military Occupational Specialty MOS - Miracle of Science Bar and Grill MOS - Museum of Science (Boston) MOT - Member of The Tribe MOTD - Message of the Day MOTS - More Of The Same MOTU - Master Of The Universe (Ubuntu) MOYA - Move Off Your Assumptions (MIT R/O) MP - Mass Production MP3 - MPEG 1/2 Layer 3 Audio Format MPA - Motion Picture Association [intern'l branch of MPAA] MPAA - Motion Picture Association of America MPH - Master of Public Health MPLS - Multiprotocol Label Switching MPOA - Multiple Protocol Over ATM MPQS - Multiple Polynomial Quadratic Sieve (factoring method) MQ - Mail Quote (as in -c sipb -i mq) MRBM - Medium Range Ballistic Missile MRE - Meal Ready to Eat MRNA - Messenger RiboNucleic Acid MRO - Maintenance, Repair, and Operating MRSA - Methicillin-Resistant Staphylococcus Aureus (bacterium) MRTG - Multi Router Traffic Grapher MRW - My Reaction When MS - Mississippi MSA - Mail Submission Agent MSA - Metropolitan Statistical Area MSan - MemorySanitizer (LLVM) MSF - Medecins Sans Frontiers (Doctors without Borders) MSG - Madison Square Garden (Arena, New York City) MSI - MicroSatellite Instability (genetics) MSI - Microsoft Installer MSIC - Missile and Space Intelligence Command (US Army) MSK - Minimum Shift Keying MSM - Mainstream Media MSM - Men who have Sex with Men MSOP - Miniature Small Outline Package (EE chip package) MSP - Member of the Scottish Parliament MSP - Minneapolis/St. Paul (Airport) MSPCA - Massachusetts Society for the Prevention of Cruelty to Animals MSPWB - Motion Seconded and Passed, White Ballot MSR - Machine State Register (Intel, Pentium) MSRP - Manufacturer's Suggested Retail Price MSS - MicroSatellite Stability (genetics) MST3K - Mystery Science Theater 3000 (TV show) MSW - Mastter of Social Work MT - Magnetic Tape MT - MegaTokyo (web comic; www.megatokyo.com) MT - Montana MTA - Massachusetts Turnpike Authority MTA - Microwave Transition Analyzer MTBE - Methyl Tertiary Butyl Ether (gasoline additive) MTDC - Modified Total Direct Cost (OMB) MTDNA - MiTochondrial DeoxyriboNucleic Acid MTF - Male To Female (transgender) MTG - Musical Theatre Guild MTG - Meeting (discuss) MTL - Microsystems Technology Laboratories [MIT] MUC - Multi-User Chat (instant messaging) MULE - MULtilingual Environment (Emacs) MUSH - multi-user shared hallucination MUTCD - Manual on Uniform Traffic Control Devices (USDOT) MVNO - Mobile Virtual Network Operator MVP - Minimum Viable Product (product testing) MWRA - Massachusetts Water Resources Authority MWSD - Modern Western Square Dance MXP - Metropolitan Exchange Point MYO - Make Your Own MYOB - Mind Your Own Business N - Nitrogen N-C - No Context (Zephyr) N-M-C - Not Much Context (Zephyr) NA - Sodium NACLO - North American Computational Linguistics Olympiad NAD - Nicotinamide Adenine Dinucleotide NAF - Not A Front NAFTA - North American Free Trade Association NAGCR - North American Guild of Change Ringers NAI - Network Associates Inc. NAM - National Association of Mathematicians NAM - National Association of Manufacturers NAM - Non-Aligned Movement NAM - non-Asian Minority NAM - North American Mesoscale Model (weather forecasting) NAMBLA - North American Man/Boy Love Association NANOG - North American Network Operators' Group NANOWRIMO - NAtional NOvel WRIting MOnth NANPA - North American Numbering Plan Administration NARAL - National Abortion and reproductive Rights Action League NARF - Nifty Animaniacs Reference File (alt.tv.animaniacs FAQ) NARM - National Association of Recording Merchandisers NARP - National Association of Railway Passengers NAS - Network Attached Storage NASD - National Association of Securities Dealers (formerly) NASDAQ - National Association of Securities Dealers Automated Quotation (formerly) NAT - Nucleic Acid Test (blood screening) NATPE - National Association of Television Program Executives NAVY - Never Again Volunteer Yourself NAWM - Not A Window Manager (program) NBC - Nuclear, Biological, Chemical (weapons) NBD - Next Business Day NBD - No Big Deal NBH - Normal Business Hours NC - National Course (threads) NC - No Context (Zephyr) NC - Nick's Class (circuit-based complexity class hierarchy) NCA - National Command Authority NCAA - National Collegiate Athletic Association NCBI - National Center for Biotechnology Information (NIH, NLM) NCC - Naval Construction Contract (Star Trek) NCIS - Naval Criminal Investigative Service NCLB - No Child Left Behind NCPDP - National Council for Prescription Drug Programs NCQ - Native Command Queuing NCTM - National Council of Teachers of Mathematics NDA - National Democratic Alliance (India) NDA - New Drug Application NDBM - New DataBase Manager NE - Nebraska NE - Neon NEA - National Endowment for the Arts NEC - New England Conservatory NEC - North East Corridor [amtrak] NECCO - New England Confectionary Company NEF - National Extra Fine (threads) NEFFA - New England Folk Festival Association NEGASS - New England Gilbert And Sullivan Society NEICAAA - New England Intercollegiate Amateur Athletic Association NEO - Near-Earth Object NERV - Nederlandse EnkelRiet Vereniging (The Dutch Single Reed Players Association) NES - Nintendo Entertainment System NESCAC - New England Small College Athletic Conference NESFA - New England Science Fiction Association NESN - New England Sports Network NETSAP - Network of South Asian Professionals NEV - Neighborhood Electric Vehicle NEWMAC - New England Women's and Men's Athletic Conference [NCAA DIII sports] NF - National Fine (threads) NF - Newfoundland (Canadian Province) NF - Noise Factor NF - Noise Figure [Noise Factor expressed in dB] NFA - Nondeterministic Finite Automaton NFC - Near Field Communications NFC - No Fucking Clue NFC - Normalization Form C (Unicode) NFD - Normalization Form D (Unicode) NFO - Next Flight Out NFP - Natural Family Planning NFPD - Not For Public Disclosure NFS - Number Field Sieve (factoring method) NFSS - New Font Selection System (LaTeX) NGA - National Geospatial-Intelligence Agency [U.S. Government] NGE - Neon Genesis Evangelion (anime) NGO - Non-Governmental Organization NGRI - Not Guilty by Reason of Insanity NHC - National Hurricane Center NHS - National Honor Society NIB - Newly Initiated Brother (Greek letter organizations) NICAD - Nickel-Cadmium (battery type, also NiCad) NID - Network Interface Device NIDA - National Institute on Drug Abuse NIE - National Intelligence Estimate NIMFYE - Not In My Front Yard Either (see NIMBY) NIPC - National Infrastructure Protection Center NIPRNET - Unclassified (but Sensitive) Internet Protocol Routing NETwork (.mil) NIST - Network & Infrastructure Services Team (MIT) NKVD - Narodnyi Komissariat Vnutrennikh Del (People's Commissariat for Interior Affairs) NLANR - National Laboratory for Applied Network Research NLC - New Line Cinema (movies) NLP - Normal Link Pulse NLT - No Later Than NM - Never Mind NMC - New Media Center (9-250, 26-139) NMC - Not Much Context NMD - National Missile Defense NMDA - N-methyl-D-aspartate NME - New Musical Express (UK music magazine) NMF - Not My Fault NMK - Not My Kink NMPA - National Music Publishers' Association NMS - Networks and Mobile Systems (CSAIL) NMSTL - Networking, Messaging, Servers, and Threading Library (C++) NMSTTW - Nail MicroSoft To The Wall NMSU - New Mexico State University NMU - Non-Maintainer Upload (Debian) NNTR - No Need To Respond NO - New Orleans NOC - Non-official Cover (CIA) NODE - New Oxford Dictionary of English NOLA - New Orleans, Louisiana NOPE - Not On Planet Earth NOT - Nucleus of the Optic Tract NOTAM - Notice to Airmen NOW - National Organization for Women NOYB - None Of Your Business NP - No Problem NP - Non-Player (see also NPC) NP - Noun Poetry NPD - National Punctuation Day (September 24) NPE - Null Pointer Exception (java) NPFM - No Potential Failure Modes NPO - Nil Per Os (nothing by mouth - medical instruction to withhold food and liquids from patient) NPOV - Neutral Point Of View NPS - National Park Service NPT - National Pipe Thread NPT - Non-Proliferation Treaty (1968) NPTL - Native POSIX Thread Library (Linux) NQ - News/Netnews Quote (as in -c sipb -i nq) NR - No Record (MIT) NRCC - National Republican Congressional Committee NRE - New Relationship Energy NRL - Nuclear Reactor Laboratory (MIT) NRO - Northeastern Regional Organization (caving) NS - National Semiconductor NS - National Special (threads) NSA - No Strings Attached NSAID - Non-Steroidal Anti-Inflammatory Drug NSDAP - Nationalsozialistische Deutsche Arbeiterpartei (National Socialist German Workers Party) NSDI - Networked Systems Design and Implementation (conference) NSEC - Next Secure (DNS) NSF - Non-Sufficient Funds (banking, checks) NSFW - Not Safe For Work NSL - name service layer NSNA - Never Say Never Again (James Bond) NSS - Name Service Switch (Linux/Unix) NSS - Netscape Security Services (software library) NSTIC - National Strategy for Trusted Identities in Cyberspace NT - Northwest Territory (Canadian Territory) NT - No Text (email) NTIBOA - Not That I'm Bitter Or Anything NTLM - NT LAN Manager NTM - Not To Mention (slang, Usenet, IRC) NUC - Next Unit of Computing (Intel) NUL - NULl (ASCII 0) NUMA - Non Uniform Memory Architecture NUWC - Naval Undersea Warfare Center (US Navy) NWH - Newton Wellesley Hospital NWIH - No Way In Hell NWO - New World Order NWOBHM - New Wave Of British Heavy Metal NX - No eXecute (computer memory attribute) NYE - New Year's Eve NYT - New York Times NYTRNG - New York Times Regional News ?Group NYU - New York University O - Organization (LDAP) O - oxygen OA - Order of the Arrow (Boy Scouts) OA - OsteoArthritis OAEP - Optimal Asymmetric Encryption Padding OAI - Open Archive Initiative [digital libraries] OASDI - Old Age, Survivors, and Disability Insurance (Social Security) OASIS - Organization for the Advancement of Structured Information Standards OAU - Organization of African Unity OAV - Original Animation Video OBBNL - Obligatory Bare Naked Ladies OBE - Overtaken By Events OBL - Osama Bin Laden (see also UBL) OBO - Off By One (as in OBO Bug, see also OBOB) OBOB - Off By One Bit/Byte OBOB - Off By One Bug OC - Off-Campus (MIT Building Designation) OCB - Offset Codebook Mode (block cipher mode) OCD - Obsessive Compulsive Disorder OCICOSO - Office Czar In Charge Of Special Operations (SIPB) OCMG - Office Computing Management Group [MIT I/S] OCN - Original Camera Negative [filmmaking] OCW - OpenCourseWare (MIT) OCW - Overseas Contract Worker (Phillipines) ODE - Ordinary Differential Equation (see also PDE) ODGE - Office of the Dean for Graduate Education (MIT) ODL - Office of Digital Learning (MIT) ODSA - Office of the Dean for Student Affairs (MIT) [replaced by ODSUE] ODSUE - Office of the Dean for Students and Undergraduate Education (MIT) OEIT - Office of Educational Innovation and Technology (MIT) OEMS - Office of Emergency Medical Services OEOP - Office of Engineering Outreach Programs (MIT) OFB - Output Feedback (block cipher mode of operation) OFDM - Orthogonal Frequency-Division Multiplexing OFFS - Oh, for fuck's sake OGC - Office of the General Counsel (MIT) OGLE - Optical Gravitational Lensing Experiment OGM - Out-Going Message OHCI - Open Host Controller Interface [USB 1.1] OHMSS - On Her Majesty's Secret Service (James Bond) OHRP - Office for Human Research Protections (federal agency) OIC - Officer In Charge OIC - Oh, I see OIC - Organization of Islamic Conferences OIG - Office of Inspector General (NASA) OIG - Orbital Information Group (NASA) OIS - Operations & Infrastructure OISE - Ontario Institute for Studies in Education OITNB - Orange Is The New Black (TV series) OK - Oklahoma OKC - Oklahoma City OKI - Open Knowledge Initiative OKR - Objectives and Key Results OKS - One Kendall Square OLED - Organic Light-Emitting Diode OLFC - OnLine Fashion Consulting [MIT] OLPC - One Laptop Per Child OLSR - Optimized Link State Routing protocol OLTA - On-Line TA OMD - Oh Mon Dieu [see: OMG] OME - Office of Minority Education OMFG - Oh My F***ing God OMG - Oh My God OMGWTFBBQ - Oh My God What The Fuck BarBeQue ON - Ontario (Canadian Province) ON - Original Negative ON - OsteoNecrosis ONHWP - Ontario New Home Warranty Program ONP - Overly Nervous Person (doctor slang) ONT - Optical Network Terminal (fiber-to-the-premises) ONTD - Oh No They Didn't OOC - Out Of Character OOC - Out Of Curiosity OOC - Out Of Context OOC - Out Of Control OOCA/OH - Out Of Control And/or Hand OOH - Out Of Hand OOL - Out Of Luck OOo - OpenOffice.org OOO - Out Of Order OOTD - One Of These Days OOTS - Order of the Stick (web comic) OP - Out-Patient (healthcare) OP - Original Poster OPD - Obstructive Pulmonary Disease OPP - Ontario Provincial Police OPP - Other People's Penis OPP - Other People's Pussy OPSEC - Operations Security OPT - Optional Practical Training OQ - [SIPB] Office Quote (as in -c sipb -i oq) OR - Onion Routing OR - Operations Research ORBS - Open Relay Blocking System ORC - Obscure Reversing Concatenation ORC - Operations Research Center (MIT) ORD - Chicago O'Hare International Airport ORF - Open Reading Frame (DNA) ORK - Order of Random Knights (MIT) ORM - Object-Relational Mapping (programming) ORS - Oral Rehydration Salts OSB - Oriented Strand Board OSC - Open Sound Control OSD - Object Store Device OSDI - Operating Systems Design and Implementation OSEI - Operational Significant Event Imagery (NOAA) OSG - Online Study Group (MIT) OSID - Open Service Interface Definition (OKI) OSJL - Ocean State Job Lot OSK - On Screen Keyboard OSO - Other Significant Other OSP - Office of Sponsored Programs (MIT) OSS - Open Sound System (distributed with Linux kernel) OSS - Open Source Software OSSD - Ontario Secondary School Diploma OSSM - Oklahoma School of Science and Mathematics OST - Original Soundtrack OT - Occupational Therapy OTA - Over The Air (TV signals, as opposed to cable) OTAPA - Over-the-air Parameter Administration OTASP - Over-the-air Service Provisioning OTB - Open To Below OTC - Over The Counter (pharmacy) OTD - Of The Day (suffix) OTP - One True Pairing OTR - Off-The-Record messaging (confidential deniable instant messaging) OTRS - Open-source Ticket Request System OTT - Over The Top OTTOMH - Off The Top Of My Head OU - Organization Unit (LDAP) OUO - Official Use Only OUP - Oxford University Press OVA - Original Animation Video (see OAV) OWA - Outlook Web Access (Microsoft Exchange) OWASP - Open Web Application Security Project OWF - one way function OWL - Web Ontology Language (w3c) OWW - Open Wetware P4 - Perforce (version-control system) PA - Palestinian Authority PA - Palo Alto (California) PA - Penny Arcade PAC - Political Action Committee PAC - Privilege Attribute Certificate PAG - Process Authentication Group [AFS] PAIP - Paradigms of Artificial Intelligence Programming (Peter Norvig) PAIX - Palo Alto Internet eXchange (Palo Alto, California) PAL - Permissive Action Link PAM - Pluggable Authentication Modules (Linux/Unix) PAN - Personal Area Networking (Bluetooth) PAND - Personal Area Networking Daemon (Bluetooth) Panhel - Panhellennic Association (governing body for sororities) PASTA - Poisson Arrivals See Time Averages PAW - Parents Are Watching (slang, Usenet, IRC) PAYT - Pay As You Throw (out the trash) PB - PetaByte PBE - Password-Based Encryption PBEM - Play By Email PBR - Pabst Blue Ribbon PBR - Photobioreactor PBS - Portable Batch System PBUH - Peace Be Upon Him (Islam) PC - Partly Cloudy (weather) PC - Perspective Correction (optics) PC - Professional Corporation PC - Protective Clothing PC - PuboCoccygeus [muscle] PCC - Presidents' Conference Committee (streetcar design) PCHW - PCHelpWare (VNC software) PCHW - PC HardWare (instance on -c geek) PCOS - PolyCystic Ovary Syndrome PCP - Pairwise Condorcet Preferential (political science) PCP - Primary Care Physician PCP - Probabilistically Checkable Proof PCP - Phencyclidine (hallucinogen) PCP - Post Correspondence Problem PCR - Pledge Class Review (MIT APO) PCR - Polymerase Chain Reaction PCR - Physics Common Room (Course 8) PCT - Peace Corps Trainee PCU - Packet Control Unit (GPRS data service component) PDA - Public Display of Affection PDA - Push-Down Automaton PDB - Protein Data Bank PDF - Portable Document Format [Adobe Acrobat] PDF - Probability Density Function PDR - Performance and Development Review PDR - Physician's Desk Reference PDR - Private Dining Room (MIT, one of the rooms on the 3rd floor of W20) PDR - Production, Distribution, and Repair PDSI - Physics, DMSE, Spectroscopy, Infrastructure (MIT Building 6C) PDX - Portland International Airport (Portland, OR) PE - Private Equity PEA - Please Expand Acronym PEA - Pulseless Electrical Activity PEBCAK - Problem Exists Between Chair And Keyboard PEBKAC - Problem Exists Between Keyboard And Chair PEP - Peak Envelope Power (Radio) PEP - Post-Exposure Prophylaxis PER - Packed Encoding Rules PERC - PowerEdge Raid Controller (Dell, rebranded LSI/AMI) PET - Positron Emission Tomography (medical; compare CAT) PETE - Polyethylene terephthalate (Recycle code #1) PETN - PentaErythritol TetraNitrate PEX - Crosslinked PolyEthylene PF - Protocol Family (sockets) PFC - Plasma Fusion Center (MIT) PFC - Private First Class PFD - Personal Flotation Device (i.e. life jacket) PFIR - People For Internet Responsibility PFLAG - Parents and Friends of Lesbians And Gays PFOP - Pleasant Forest of Pain PFP - Partnership For Peace PFS - Perfect Forward Secrecy PFSC - Pictures For Sad Children (webcomic) PFTGOTO - Points For The Good Of The Order (MIT APO) PFY - Pimply-Faced Youth (BOFH) PGA - Paramount's Great America (Amusement park, Santa Clara, California) PGA - Professional Golfers' Association PGCC - Pentium Gnu C Compiler PGD - Preimplantation Genetic Diagnosis PH - PentHouse (Real-Estate) PHB - Per-Hop Behavior (IETF Differentiated Services) PHB - Pointy-Haired Boss (Dilbert) PHD - Piled Higher and Deeper [comic strip] PHP - PHP: Hypertext Preprocessor PHTLS - Pre-Hospital Trauma Life Support (Medical) PI3K - phosphatidylinositol 3 kinase PIC - Position Independent Code PICC - Peripherally Inserted Central Catheter PID - Proportional, Integral, and Differential (control) PIF - Program Information File (Windows) PIFCO - Panhel and IFC Office (MIT; see also DPIFCO) PII - Personally Identifiable Information PILOT - Payment In Lieu of Taxes (Deal between Cambridge and MIT/Harvard) PIO - Person(s) of Indian Origin PIP - Performance Improvement Plan PIR - Protein Information Resource PIRN - Personal Information Requiring Notification (MIT) PITA - Pain In The Ass PIV - Penis In Vagina (sex act) PIV - Personal Identity Verification (NIST) PJF - Pre-Joycean Fellowship (Steven Brust) PK - PacK (as in, a bundle of more than one) PK - Public-Key (Cryptography) PKB - Pot [calling the] Kettle Black PKC - Public-Key Cryptography PKI - Public-Key Infrastructure (Cryptography) PKK - Kurdistan Worker's Party (Partiya Karker?? Kurdistan) PKS - Phi Kappa Sigma (MIT) PKT - Phi Kappa Theta (MIT) PL - Private Line [Motorola] PLANET - Probing Lenses Anomalies NETwork PLIF - (new MIT logo, 2003) PLIF - Parking Lot Is Full PLIF - Post-Literate Information Foundation (Centauri) PLM - Product Lifecycle Management PLOKTA - Press Lots of Keys to Abort PLONK - Put Lamer On Killfile (Usenet) PLRM - PostScript Language Reference Manual PLT - Procedure Linkage Table PLUR - Peace, Love, Unity, Respect PMC - Pan-Mass Challenge (bikeathon) PMC - Private Military Companies [mercenaries] PMC - Project Management Committee PMDD - Premenstrual Dysphoric Disorder PMOLED - Passive Matrix Organic Light-Emitting Diode PMF - Probability Mass Function PMG - Programming Methodology Group (CSAIL) PMS - Pre-menstrual syndrome PMTUD - Path MTU Discovery (Networks) PNAELV - Popular North American Enterprise Linux Vendor PNALV - Popular North American Linux Vendors PNAS - Proceedings of the National Academy of Sciences PNG - Papua New Guinea PNG - Persona Non Grata PNG - Portable Network Graphics (Image Format) PNM - Portable aNyMap (Image Format) PNM - Potential New Member (Sorority recruitment) PNR - Passenger Name Record P/NR - Pass / No Record (MIT) POA - Power of Attorney POC - Proof of Concept POC - Person of Color PoE - Power over Ethernet PoET - Program on Emerging Technologies POJI - Plain Old Java Interface POJO - Plain Old Java Object POJO - Plain Old Java Objects POLA - Principle of Least Astonishment POLA - Principle of Least Authority (computer security) POLST - Physician Orders for Life-Sustaining Treatment POM - Project Object Model PON - Passive Optical Networking POO - President Out of Office (MIT APO) POP - Proof Of Payment (fare collection) POS - Packet Over SONET POS - Part of Speech POS - Piece of Shit POS - Point of Service POSH - Plain Old Semantic HTML POSH - Port Out, Starboard Home POSH - Python Object SHaring POTUS - President Of The United States PP - Polypropylene (Recycle code #5) PPA - Personal Package Archive (Ubuntu) PPACA - Patient Protection and Affordable Care Act ["Obamacare"] PPE - Personal Protective Equipment PPM - Portable PixMap (Image Format) PPO - Preferred Provider Organization (cf HMO) PPPoA - PPP over ATM PPPoE - PPP over Ethernet PPQ - Parts Per Quarter note PPV - Pay Per View PR - Problem Report PRC - People's Republic of Cambridge [MA] -- derisive slang PRC - Panhellenic Recruitment Counselor PRDB - Policy Routing DataBase (from the NSFnet era) PRDB - PRotection DataBase (AFS) PRF - Protein Research Foundation PRK - Photorefractive Keratectomy [vision correction] PRL - Physical Review Letters PRN - Pro Re Nata (as needed) PRNF - Pseudo-Random Neuron Firing (MIT, Zephyr) PRNG - Pseudo-Random Number Generator (pRNG) PS - Partly Sunny (weather) PS - PlayStation PS - Polystyrene (Recycle code #6) PS2 - PlayStation 2 PSA - Public Service Announcement PSB - Publishing Services Bureau PSCC - Penn. Station Control Center [amtrak/lirr] PSD - Photoshop Document PSD - Positive Semidefinite (matrix) PsF - Progressive Segmented Frame (Sony) PSFC - Plasma Science & Fusion Center (http://www.psfc.mit.edu) PSHB - PubSubHubbub (internet protocol) PSI - Pounds per Square Inch PSK31 - Phase Shift Keying, 31 Baud PSU - the Pennsylvania State University PSU - Power Supply Unit PSX - Playstation PTAC - Packaged Terminal Air Conditioner PTDM - Parking and Transportation Demand Management (City of Cambridge) PTI - Punt this instance (zephyr) PTO - Paid Time Off PTO - Parent Teacher Organization PTR - Pledge Term Review (MIT APO) PTS - ProTection Server (AFS) PTT - Protein Truncation Testing (genetics) PTT - Push To Talk (ham radio) PTZ - Pan/Tilt/Zoom PTZ - Pi Tau Zeta (MIT) PUA - Pick-Up Artist PUA - Private Use Area (Unicode) PUBS - Percutaneous Umbilical Blood Sampling (prenatal diagnosis technique) PUF - Physical Random Function PUF - Physical Unclonable Function PUMA - People United Means Action (politics) PUMA - Party Unity My Ass (politics) PVD - ProViDence, RI (T.F. Green State Airport) PVF - Portable Voice Format (mgetty) PVI - Partisan Voting Index PVI - Polyvinyl Isobutyl Ether PVNS - Pigmented VilloNodular Synovitis PVP - Player Versus Player (comic strip) PVR - Personal Video Recorder PWA - Person (People) With AIDS PWA - Projection/Publicity Work Area (LSC) PWANTS - People Who Are Not The Same (MIT Zephyr) PWOG - Private Workstation Owner's Guide PWR - Pressurized Water Reactor PWS - Private WorkStation (MIT Athena) PXE - Pre-boot eXecution Environment PYBAGTFO - Pack Your Bags And Get The Fuck Out PZT - Lead (Pb) Zirconate (Zr) Titanate (Ti) (used in piezo transducers) QALY - Quality-Adjusted Life Year (measure of disease burden) QC - Quebec (Canadian Province) QC - Questionable Content (Webcomic) QCC - Quarter Century Club (MIT) QCD - Quantum ChromoDynamics QFE - Quick Fix Engineering QFN - Quad Flad No-lead (EE chip package) QFT - Quantum Field Theory QFTAGJ - Quoted For Truth And Great Justice QM - quantum mechanics QP - Quoted Printable (MIME, RFC2045) QRAM - Quantum Random Access Memory QS - Quadratic Sieve (factoring method) QSSA - Quasi-Steady-State Approximation QW - quantum well R2RS - Revised^2 Report on the Algorithmic Language Scheme R3RS - Revised^3 Report on the Algorithmic Language Scheme R4RS - Revised^4 Report on the Algorithmic Language Scheme RA - Recursion Available (DNS) RA - Remembrance Agent RA - Rheumatoid Arthritis RA - Right Ascension RA - Ronald-Ann.mit.edu (SIPB AFS server) RA - Routing Arbiter RADB - Routing Arbiter DataBase RAH - Robert A. Heinlein (Author) RAS - Redundant Acronym Syndrome RAW - Read After Write RAW - Research and Analysis Wing (India) RB - RoseBud.mit.edu (SIPB AFS server) RBA - Residence-Based Advising (MIT) RBAC - Role-Based Access Control (Computer Security) RBL - Realtime Blackhole List RBN - RealAudio Broadcast Network RBR - Reserve Book Room RBS - Ribosome Binding Site RBS - Royal Bank of Scotland RC - Release Candidate (software development) RC - Reynelda.mit.edu (SIPB AFS server) (following RA, RB...) RC4 - Rivest Cipher #4 (cryptography) RCA - Residence and Campus Activities (MIT) [replaced by RLSLP] RCC - Residential Computing Consultants RCC - Roman Catholic Church RCC - Roxbury Community College RCCL - Rose Combed Clean Legged (Bantam chickens) RCE - Remote Code Execution RCS - Radar Cross Section RCSB - Research Collaboratory for Structural Bioinformatics RD - Recursion Desired (DNS) RDDP - Remote Direct Data Placement [Networking] RDF - Resource Description Framework RDFS - Resource Description Framework Schema RDMA - Remote Direct Memory Access [Networking] RDNA - Recombinant DNA RDNA - Reformed Druids of North America REC - Renewable Energy Credits RED - Random Early Detection [Networking] REI - Recreational Equipment Incorporated (Outdoor sports co-op store.) REIT - Real Estate Investment Trust REST - REpresentational State Transfer (Web) REST - Restricted Elective in Science and Technology (MIT) REU - Research Experience for Undergraduates REX - Residence EXploration and selection (MIT) RFIC - Radio Frequency Integrated Circuit RFID - Radio Frequency IDentification RFO - Reason For Outage RFP - Request For Payment RFSN - Real Fucking Soon Now RHCP - Red Hot Chili Peppers RHEL - Red Hat Enterprise Linux RHF - rec.humor.funny [usenet] RHIP - Rank Hath Its Privileges RHN - Red Hat Network (up2date) RHPS - Rocky Horror Picture Show RI - Reference Implementation (Java programming) RI - Representation Invariant RIAA - Recording Industry Association of America RICE - Rest, Ice, Compression, Elevation (first aid) RICO - Racketeer Influenced and Corrupt Organizations (legal) RIE - Reactive Ion Etching RIM - Research In Motion [corporate name] RINO - Republican In Name Only RISD - Rhode Island School of Design RJ - Registered Jack (as in RJ11, RJ45, etc.) RK - Radial Keratotomy [vision correction] RKB - Roadkill Buffet (MIT improvisational comedy group) RKO - Radio-Keith-Orpheum RL - Real Life RLA - Residence Life Associate (MIT) RLC - Rod Length Check (male slang) RLSLP - Residence Life and Student Life Programs (MIT) RM - ReMove RMD - Raw Modem Data (voicemodem) RMI - Remote Method Invocation (Java) RNA - Ring, No-Answer RNAI - RNA Interference RNC - Registered Nurse Certified (in a specialty) RNC - Republican National Committee RNG - Random Number Generator RNO - Reno, Nevada RO - Reverse Osmosis ROC - Recovery-Oriented Computing ROC - Region Of Convergence RODC - Read-Only Domain Controller (Windows) ROFL - Rolling On the Floor Laughing (more commonly ROTFL) ROFLMAO - Rolling On the Floor Laughing my Ass Off (more commonly ROTFLMAO) RoHS - Restriction of Hazardous Substances (EU directive) ROK - Republic of Korea (South Korea) ROM - Rough Order of Magnitude RON - Resilient Overlay Network ROR - Ruby On Rails ROS - Reactive Oxygen Species ROS - Robot Operating System ROSFAP - Registrar of Science Fictional Amateur Publications (MITSFS) ROTFL - Rolling On The Floor Laughing ROTFLMAO - Rolling On The Floor Laughing My Ass Off ROTFLOL - Rolling On The Floor Laughing Out Loud ROTS - Revenge of the Sith (Star Wars Episode III) ROU - Rules of Use (Athena, MITnet) RPCV - returned Peace Corps volunteers (organization) RPD - RePlay Daemon (part of the olc server) RPG - Rocket Propelled Grenade RPM - Redhat Package Manager RPO - Radiation Protection Office RPR - Retro Pop Reunion [syndicated radio show] RPS - Rock, Paper, Scissors RPS - Routing Policy Specification RPSL - Routing Policy Specification Language RRPO - Reactor Radiation Protection Office (MIT research reactor) RRPO - Reactor Radiation Protection Officer RRR - Reuse, Reduce, Recycle RRSIG - Resource Record Signature (DNS) RS - Record Separator (ASCII 30) RSF - Rentable Square Feet (includes common areas, etc.; compare with Usable Square Feet (SF)) RSF - Reporters Sans Frontiers (Reporters Without Borders) RSI - Research Science Institute RSI - Research Systems, Incorporated RSIP - Realm Specific IP (RFC3103) RSP - Root Scaling and Planing (Periodontics) RSS - Rashtriya Swayamsevak Sangh (India) RSS - RDF Site Summary RSS - Really Simple Syndication RSSC - Residence Selection Steering Committee RSSI - Receive Strength Signal Indication RST - ReSeT (IP flag) RST - Random Standard Time (Random Hall, MIT) RSV - Respiratory Syncytial Virus RSVP - Resource ReSerVation Protocol RT - Request Tracker RTA - Rapid Transit Association [mit] RTD - Resistance Temperature Detector RTFA - Read the F***ing Article (Slashdot) RTFM - RT FAQ Manager (Request Tracker) RTFN - Right The Fuck Now RTFS - Read the Source RTFSA - Read the Stock Answer RTFZ - Read the Zlogs (Zephyr logs) RTFZL - Read the ZLogs (Zephyr logs) RTI - Random Technical Item (MIT Assassins' Guild) RTK - Receptor Tyrosine Kinase RTL - Register Transfer Language (GCC, others) RTL - Release To Listen (ham radio, see PTT) RTM - Robert Tappan Morris, Jr. RTMS - Repetitive Transcranial Magnetic Stimulation RTO - Retransmission TimeOut (TCP) RTOS - Real-Time Operating System RTP - Research Triangle Park (near Raleigh, NC, and Duke University) RTS - Ready To Ship RTS - Real-Time Strategy RTSP - Real-Time Streaming Protocol RTV - Room Temperatature Vulvcanized (silicone) RTW - Rule The World RVD - Remote Virtual Disk RWB - Reporters Without Borders (Reporters Sans Frontiers) RX - Receive (telegraphy) RXTE - Rossi X-ray Timing Explorer S3 - Simple Storage Service (Amazon) SA - Saudi Arabia SA - Security Association (IPSec) SA - SpamAssassin SA - Stock Answer SAA - Student Art Association (MIT) SABDFL - Self-Appointed Benevolent Dictator For Life (nickname of Mark Shuttleworth, founder of Ubuntu) SABR - Society for American Baseball Research (whence "sabermetric") SAC - Strategic Advisory Committee (MIT) SACD - Super Audio Compact Disc SAD - Seasonal Affective Disorder SADR - Saharawi Arab Democratic Republic SAFE - Security And Freedom through Encryption (bill) SAFO - Student Activities Finance Office (MIT) SAHD - Stay At Home Dad SAHM - Stay At Home Mom SAHP - Stay At Home Parent SAIS - Student and Administrative Information Systems (IS&T) SAK - Secure Attention Key SAML - Security Assertion Markup Language SAN - Sanity [points, from the RPG _Call of Cthulhu_] SAN - Storage Area Network SAN - Subject Alternative Name (SSL) SANE - Scanner Access Now Easy SAO - Student Activities Office (MIT) SAR - Specific Absorption Rate SARS - Severe Acute Respiratory Syndrome ("mystery flu", 2003) SARSAT - Search And Rescue Satellite Aided Tracking SAS - Special Air Service (United Kingdom) SASL - Simple Authentication and Session Layer (RFC 2222) SAT - Satisfiability (Artificial Intelligence, Computability) SATA - Serial ATA SATB - Soprano, Alto, Tenor, Bass (vocal music) SATAN - Security Administrator Tool for Analyzing Networks SATC - Sex and the City [TV] SATW - Scandinavia and the World (web comic) SAUJS - South African Union of Jewish Students SAX - Simple API for XML SAYC - Standard American Yellow Card (Bridge) SB - Science Baccalaureate (latin form of "Bachelors of Science") SBA - Susan B. Anthony (dollar coin) SBF - School Bus Fleet [magazine] SBIR - Small Business Innovation Research SBR - Short-Barreled Rifle SBWG - Synthetic Biology Working Group SCA - Single Connector Attachment (SCSI) SCA - Society for Creative Anachronism SCA - Software Communications Architecture (DoD) SCCL - Single Combed Clean Legged (Bantam chickens) SCEP - Student Committee on Educational Policy (MIT UA) SCFE - Slipped Capital Femoral Epiphysis SCFL - Source Coupled FET Logic SCFM - Standard Cubic Feet per Minute (gas at STP) SCI - Scalable Coherent Interface SCI - Sensitive Compartmented Information SCIF - SCI Facility SCL - Senior Classical League SCLC - Southern Christian Leadership Coalition (civil rights org) SCNT - Somatic Cell Nuclear Transfer (cloning technique) SCOTUS - Supreme Court of the United States SCP - Secure CoPy (SSH) SCP - Service Control Protocol (UPnP) SCPD - Service Control Protocol Declaration(UPnP) SCR - Silicon-controlled rectifier (EE) SCRAM - Super-Critical Reactor Axe Man SCSH - SCheme SHell SCSL - Sun Community Source License SCSV - Signaling Cipher Suite Value SCTP - Stream Control Transmission Protocol (RFC 2960, 3286) SCWM - SCheme Window Manager SD - Service Desk (MIT IS&T; new name for the help desks) SD - Secure Digital (flash memory) SD - Standard Definition (TV) SDDD - Sucks Dead Donkey Dick (CMU Zephyr) SDDS - Seamless Data Distribution Service SDDS - Sony Dynamic Digital Sound [film; obsolete] SDI - Serial Digital Interface (ITU-R 656) SDIT - Software Dev and Integration Team (IS&T) SDLC - System Development Life Cycle SDMI - Secure Digital Music Initiative SDP - Service Discovery Protocol (Bluetooth) SDPD - Service Discovery Protocol Daemon (Bluetooth) SDR - Software Defined Radio SDS - Software Devices and Systems (MIT LCS research group) SDS - Students for a Democratic Society SDS-PAGE - Sodium Dodecyl Sulfate Polyacrylamide Gel Electrophoresis SDSS - Sloan Digital Sky Survey SEA - Seattle/Tacoma, Washington SEAL - SEa, Air, and Land team (USN) SEDS - Students for the Exploration and Development of Space SEM - Search Engine Marketing SEMO - Security and Emergency Management Office (MIT) SEO - Search Engine Optimization SEP - Somebody Else's Problem SES - Socio-Economic Status SETA - Students for the Ethical Treatment of Animals SEVIS - Student and Exchange Visitor Information System SEVT - Solar Electric Vehicle Team (MIT) SF - [Usable] Square Feet (compare w/ RSF) SFA - Sales Force Automation SFBA - San Francisco Bay Area SFDH - Shit Flows Down Hill SFF - Semi-Formal Formal (APO) SFGS - Students for Global Sustainability SFINAE - Substitution Failure Is Not An Error (C++ templates) SFLC - Software Freedom Law Center SFP - Self-Fulfilling Prophecy SFW - Safe For Work SG - Singapore (ISO country code) SG - Specific Gravity SGTM - Silently Giggling To Myself SGTM - Sounds Good To Me SHIT - Special High-Intensity Training SHR - CUP Subcommittee on the HASS Requirement (MIT) SHTML - Server-parsed HTML SI - Shift In (ASCII 15) SI - Systeme Internationale ("the metric system") SIAB - Shell In A Box (web software) SIAS - Say It Ain't So SIBP - A common mispelling of SIPB SICI - Serial Item and Contribution Identifier (publishing) SICM - Structure and Interpretation of Classical Mechanics (MIT/6.946/12.620J/8.351J) SICOF - Save In Case Of Fire (SIPB) SICP - Structure and Interpretation of Computer Programs (MIT/6.001) SID - Subscription Identifier (UPnP) SIDA - Security Identification Display Area (FAA) SIDS - Sudden Infant Death Syndrome SIGACT - Special Interest Group on Algorithms and Computation Theory (ACM) SIGCOMM - Special Interest Group on data COMMunication (ACM) SIGGRAPH - Special Interest Group on Computer Graphics (ACM) SIGINT - SIGnals INTelligence SIK - Society for Interactive Killing (LARP) SIL - Sister-in-Law SIL - Summer Institute of Linguistics SINC - SINe Cardinal [ = sin(x)/x ] SIOD - Scheme In One Defun SIP - Session Initiation Protocol (RFC 2543) SIP - Supplementary Ideographic Plane (Unicode) SIPRI - Stockholm International Peace Research Institute SIPRNET - Secret IP Routing Network SIQS - Self-Initializing Quadratic Sieve (factoring method) SIS - Secret Intelligence Service (MI6) SJ - San Jose SJC - Supreme Judicial Court SJCL - Stanford Javascript Crypto Library SJG - Steve Jackson Games SJW - Social Justice Warrior SK - Saskatchewan (Canadian Province) SKG - Spielberg, Katzenberg, Geffen (Dreamworks) SLA - Sealed Lead-Acid (battery type; more correctly called VRLA) SLA - Service Level Agreement (IETF Differentiated Services) SLAPD - Standalone LDAP Daemon SLAPP - Strategic Lawsuit Against Public Participation (preferred) SLE - Systemic Lupus Erythematosus SLES - SUSE Linux Enterprise Server SLF4J - Simple Logging Facade for Java SLI - Scalable Link Interface (nVidia video cards, formerly Scan-Line Interleave) SLIM - Single-sided Linear Induction Motor SLIME - Superior Lisp Interaction Mode for Emacs SLO - Service Level Objective SLOGIN - Secure Login (SSH) SLOPE - Student Life Orientation Planning and Events (MIT); also expands as Programming and Events SLP - Service Location Protocol (RFC2608) SLR - Single Lens Reflex SLW - Software Licensing Wrapper SMA - Singapore/MIT Alliance SMBH - SuperMassive Black Hole SMC - Space & Missile systems Center (US Air Force) SMC - System Management Controller (Apple) SMH - Shake My Head SMIL - Synchronized Multimedia Integration Language SMLC - Serving Mobile Location Centre (GSM) SMN - Shy Male Nerd SMOW - Standard Mean Ocean Water SMP - Supplmentary Multilingual Plane (Unicode) SMP - Survival Multiplayer (Minecraft) SMPP - Short Message Peer-to-peer Protocol SMPS - Switching-Mode Power Supply SMR - Shingled Magnetic Recording SMR - sipb-machine-room@mit.edu SN - Surname (LDAP) SNA - Scalar Network Analyzer SNA - Sine Nomine Associates (AFS consulting firm) SNES - Super Nintendo Entertainment System SNFS - Special Number Field Sieve (factoring method) SNI - Server Name Indication (SSL) SNL - Saturday Night Live SNP - Single Nucleotide Polymorphism (DNA sequence variation) SNRNP - Small Nuclear RiboNucleoProtein SNS - Screen Name Service (AIM) SNS - Signals aNd Systems (MIT Course 6) SNTG - Secret Ninja Training Ground SO - Shift Out (ASCII 14) SOA - Semiconductor Optical Amplifier SOA - Service Oriented Architecture SOAP - Simple Object Access Protocol (XML) SOAP - Snakes On A Plane SOC - Separation of Concerns (software engineering) SOCOM - Special Operations Command SOF - Special Operations Forces (U.S. Military) SOFFA - Significant Other, Friend, Family, or Ally SOG - Shots On Goal (hockey) SOHO - Small Office / Home Office SOHO - South Of HOuston (New York City) SOIC - Small Outline Integrated Circuit (EE chip package) SOMA - South Of MArket (San Francisco) SOMA - System for On-line Multiunit Acquisiton [MIT: Eric Jonas] SOS - Scheme Object System SOSC - Server Operations Service Center (IS&T) SOSP - Symposium on Operating Systems Principles SOT - Source of Truth SOTU - State of the Union SOV - Subject Object Verb (linguistic typology) SP - Service Pack (software development) SP - Sidney-Pacific (MIT dormitory) SPADE - Simple Protocol Application Data Encoding SPAMIT - Stupid People At MIT SPC - Sony Pictures Classics (movies) SPC - Storm Prediction Center (US National Weather Service) SPDT - Single Pole Double Throw (type of switch) SPEC - Sidney-Pacific Executive Committee (MIT) SPECT - Single Photon Emission Computed Tomography (Medicine) SPECTRE - SPecial Executive for Counterintelligence, Terrorism, Revenge and Extortion SPED - Single Process Event-Driven SPF - Sender Policy Framework (formerly Sender Permitted From) SPF - Shortest Path First SPF - Spruce/Pine/Fir (lumber) SPH - Smoothed Particle Hydrodynamics SPICE - Simulation Program with Integrated Circuit Emphasis SPICE - Simple Protocol for Independent Computing Environments (Red Hat) SPIT - SPam over Internet Telephony (VoIP Spam) SPKAC - Signed Public Key And Challenge (Netscape Certificate Generation) SPL - Sound Pressure Level SPLC - Southern Poverty Law Center SPNEGO - Simple and Protected GSS-API NEGOtiation mechanism SPOC - Single Point Of Contact SPODSA - Secret Police of the Office of the Dean for Student Affairs (MIT) [presumed defunct] SPOF - Single Point Of Failure SPP - Service Provisioning Policy (IETF Differentiated Services) SPQR - Senatus PopulusQue Romanus ("the Senate and the People of Rome": official name of Roman Empire) SPUI - Single-point Urban Interchange (traffic) (see http://www.kurumi.com/roads/interchanges/spui.html) SR - source-reviewers@mit.edu SR - Steer Roast (MIT party) SRB - Storage Request Broker SRC - Server Response Code (HTTP) SRC - Society for Retro-Computing (MIT) SRC - SouRCe SRD - Self-Reading Dosimeter SRD - [Dolby] Spectral Recording Digital [aka Dolby Digital] (movies) SRF - Shatter-Resistant Film SRP - Secure Remote Password (Stanford, IETF) SRS - Sender Rewriting Scheme SRS - Sex Reassignment Surgery SRT - Single Rope Technique SRU - Stable Release Update (Ubuntu) SRV - Stevie Ray Vaughan [musician] SRVD - System Remote Virtual Disk SS7 - Signalling System 7 (telephony) SSB - Single Strand Binding [protein] SSB - Super Smash Bros. SSBM - Super Smash Bros. Melee SSBN - Sub Surface Ballistic (missile) Nuclear [submarine] SSC - Student Services Center (MIT) SSC - Student Sex-Positive Club (MIT) SSC - Student Systems Computing (MIT) (formerly SSIT) SSDD - Same Shit, Different Day SSDP - Simple Service Discovery Protocol (UPnP) SSE - Streaming SIMD Extensions (Intel Pentium III, was KNI before release) SSF - South San Francisco SSH - Secure SHell SSID - Service Set IDentifier (802.11) SSIT - Student Services Information Technology (MIT; DUE/DSL) SSMT - Satan Stole My Teddybear SSN - Social Security Number SSO - Single Sign On SSO - Statistically Significant Other SSOP - Shrink Small Outline Package (EE chip package) SSP - Supplementary Special-purpose Plane (Unicode) SSRI - Selective Serotonin Reuptake Inhibitor (Prozac and the like) SSRR - Strict Source and Record Route SSS - Sinusoidal Steady State SSSP - Single-Source Shortest Path SST - Service State Table (UPnP) ST - Scheduled Transfer (GSN) STAPLE - Simultaneous Truth and Performance Level Estimation STBX - Soon To Be Ex STBY - Sucks To Be You STC - Sound Transmission Class STD - Standard (IETF) STDS9 - Star Trek: Deep Space Nine STEM - Science, Technology, Engineering, and Mathematics STFU - Shut The Fuck Up STFU - Silence The Far Unit (802.3 MDIO bit 1.30.14) STFW - Search The Fucking Web STH - Season Ticket Holder (sports) STH - SomeTHing STI - Sexually Transmitted Infection STM - Software Transactional Memory STONITH - Shoot The Other Node In The Head (server clustering) STS - Science, Technology, and Society (MIT academic program) STT - Speech To Text STTOS - Star Trek: The Original Series, "ST:TOS" STTR - Small Business Technology Transfer STW - Save The World SUB - SUBstitute (ASCII 26) SUIF - Stanford University Intermediate Format (compiler framework) SUP - Software Upgrade Protocol SUT - Stupid User Tricks SUYA - Someone Using Your Account SV - Silicon Valley SVC - Supervisor Call SVG - Scalable Vector Graphics SVM - Support Vector Machine SVN - SubVersioN (revision control) SVO - Subject Verb Object (linguistic typology) SWAG - Serious Wild-Assed Guess SWAK - Sealed With A Kiss SWAT - Special Weapons And Tactics SWE - Society of Women Engineers SWIG - Simplified Wrapper and Interface Generator SWIL - Swarthmore Warders of Imaginative Literature SWIP - Shared WhoIs Project SWL - Safe Working Load SWMBO - She Who Must Be Obeyed (A.S.R, Rumpole of the Bailey) SWOP - Specifications Web Offset Publications SWORD - Secret World Organization for Retribution and Destruction SWOT - Strengths, Weaknesses, Opportunities, and Threats [MIT I/S] SWP - Second World Problem SWR - Standing Wave Ratio SWRT - SoftWare Release Team (MIT I/S) SWS - Silly Window Syndrome (TCP) SYK - So You Know SYTYCD - So You Think You Can Dance (television show) T - MBTA (Massachusetts Bay Transportation Authority) T&A - Tits & Ass T&E - Test & Evaluation T&M - Time & Materials TA - Theater Arts (MIT department) TA:MS - The Apprentice: Martha Stewart TAA - Trip Across America (rayhe,wdaher) TADS - Target Acquisition and Designation System TADS - Text Adventure Development System TAF - Terminal Aerodrome Forecast (NWS standard, trans. French) TAFKAP - The Artist Formerly Known As Prince TAI - International Atomic Time TAMS - Texas Academy of Mathematics and Science TAMTOW - There is Always More Than One Way (perl) TAOCP - The Art of Computer Programming (Knuth) TAOE - The Art Of Electronics TARDIS - Time And Relative Dimension In Space (Dr. Who) TASER - Thomas A. Swift's Electric Rifle TBC - To Be Clear TBDBITL - The Best Damn Band In The Land (Ohio State University) TBH - To Be Honest TBONTBTITQ - To Be Or Not To Be, That Is The Question TBP - Tau Beta Pi (engineering honor society) TBQH - To Be Quite Honest TC - Thailand Cafe TC - TrunCation (DNS) TCA - Tech Community Association (MIT) TCA - Traffic Conditioning Agreement (IETF Differentiated Services) TCAS - Traffic alert and Collision Avoidance System TCAT - Tokyo City Air Terminal TCB - Taking Care of Business (and Working Overtime) TCBY - The Country's Best Yogurt TCC - Tech Catholic Community (MIT) TCG - Trading Card Game TCK - Technology Compatibility Kit (Java programming) TCL - Tool Command Language TCMS - Trans-Cranial Magnetic Stimulation TCO - Total Cost of Ownership TDA - Tax Deferred Annuity TDAP - Tetanus, Diphtheria, And Pertussis TDC - That Darned Cat [Disney] TDC - Top Dead Center TDCR - Tel Data Communications Rooms (MIT IS&T) TDD - Test-Driven Development TDK - Test Development Kit (Java programming) TDM - Too Damned Much TDMTLA - Too Damn Many Three Letter Acronyms TDS - The Daily Show (TV show) TDTL - Too Dumb To Live TED - Technology, Entertainment, Design (ted.com) TELAC - Technology Laboratory for Advanced Composites [MIT] TEM - Transmission Electron Microscopy TEMS - Transcutaneous Electrical Muscle Stimulation TENS - Transcutaneous Electrical Nerve Stimulation TEOTWAWKI - The End Of The World As We Know It TEP - Tau Epsilon Phi (MIT fraternity) TERF - Trans-Exclusionary Radical Feminist TES - Technicolor Entertainment Services TETAZOO - Third East Travelling Animal ZOO TFA - Two-Factor Authentication TFC - Tanglewood Festival Chorus (Boston Symphony Orchestra) TFE - Third Floor Enterprises (120 Auburn) TFM - The Fucking Manual TFN - Tribal Flood Network TFO - Temporary Faculty Offices (MIT) TFP - This Fine Place TFP - This Fucking Place TFPHYT - This Fucking Place Hates You Too (see IHTFP) TG - TransGender TGA - ThermoGravimetric Analysis TGIF - Thank Goodness It's Friday TGS - Ticket Granting Service (Kerberos) TGT - Ticket Granting Ticket (Kerberos) TGTBT - Too Good To Be True TGV - Le Train ŕ Grande Vitesse (300kph European high speed train) THA - Technology Hackers Association (MIT) THC - tetrahydrocannabinol THHN - Thermoplastic High Heat-resistant Nylon-coated (wire) THHW - Thermoplastic High Heat-resistant Wet [moisture-resistant] (wire) THOK - The Herd Of Kittens THOK - Thundering Horde Of Kittens TIA - Terrorist (was Total) Information Awareness TIC - Tongue In Cheek TIF - Tyrannical Iron Fist (MITSFS) TIFU - Today I Fucked Up TIG - The Infrastructure Group (MIT CSAIL facilities/IT group) TIG - Tungsten Inert Gas (welding) TIL - Today I Learned TIMTOWTDI - There Is More Than One Way To Do It (perl) TIN - Taxpayer Identification Number (IRS) TINAF - This Is Not A Front TINLA - This Is Not Legal Advice TIPB - Tetazoo Intensive Punting Bureau (MIT) TIPS - Terrorist Information and Prevention System (FEMA) TIPS - Training for Intervention ProcedureS (alcohol-server training) TIR - Today I Realized TL;DR - Too Long; Didn't Read TLAM - Tomahawk Land Attack Missile TLAR - That Looks About Right TLC - Thin Layer Chromatograph[y] TLD - The Living Daylights (James Bond) TLD - Top Level Domain (DNS) TLDR - Too long, didn't read TLO - Technology Licensing Office (MIT) TLS - Transparent LAN Service (Verizon) TLS - Transport Layer Security TMBG - They Might Be Giants (music group) TMDA - Too Many Damn Acronyms TMI - Too Much Information TMJ - Temporo-Mandibular Joint TMNT - Teenage Mutant Ninja Turtles TMNT - Teenage Mutant Ninja Turtles [comic book] TMP - Technology, Management and Policy (MIT TPP) TMS - Transcranial Magnetic Stimulation TMS - Traditional Medicine Society TMTO - Time/Memory TradeOff (scrypt, litecoin) TMTOWTDI - There's More Than One Way To Do It (perl) TMWTGG - The Man With The Golden Gun (James Bond) TMYK - The More You Know TNC - Transportation Network Company (e.g., Lyft, Uber) TND - Tomorrow Never Dies (James Bond) TNF - The NetBSD Foundation TNG - The Next Generation (Star Trek) TNIS - Telecommunications and Networking Installation Services (MIT) TNM - The NetBSD Mission TNO - Trans-Neptunian Object TNQ - Technique (MIT Yearbook) TNSTAAFL - There's No Such Thing As A Free Lunch TNT - Turner Network Television TO - Ticked Off TO - Toronto, Ontario TOCOTOX - TOo COmplicated TO eXplain TOCTOU - Time-Of-Check to Time-Of-Use (security exploit) TOFU - Trust On First Use TOG - The Open Group TOS - The Original Series (Star Trek) TP - Toilet Paper (sophomoric vandalism) TP - Trading Partner (EDI) TPF - Terrestrial Planet Finder TPI - Threads Per Inch (UTS screws) TPK - Total Party Kill TPP - Technology & Policy Program TPTB - The Powers That Be TPU - Testing-Proposed-Updates (Debian) TPU - Thermoplastic Polyurethane TQE - Technical Qualifying Exam TRACON - Terminal Radar Approach CONtrol TRAP - Targetted Regulation of Abortion Providers TRAU - Transcoder and Rate Adaptor Unit (GSM) TRFKAN - The Restaurant Formerly Known As Networks (i.e. Courses, now Alpine) (MIT) [pronounced TURF-can] TRFKATRFKAN - The Restaurant Formerly Known As The Restaurant Formerly Known As Networks (i.e. Alpine) (MIT) TRI - Toxics Release Inventory (EPA, Federal Government) TRIBECA - TRIangle BElow CAnal (New York City) TRS - Technical Review Session (MITOC) TRNA - Transfer RiboNucleic Acid TRO - Temporary Restraining Order TSA - Transportation Security Administration TSan - ThreadSanitizer TSCII - Tamil Standard Code for Information Interchange TSHTF - The Shit Hits The Fan TSM - Tivoli Storage Manager (formerly ADSM) TSO - TCP Segmentation Offload TSR - Talented Scholars Resource Room (formerly Tutorial Services Room) (16-159, MIT) TSR^2 - Talented Scholars Resource Room (16-159, MIT) TSS - Toxic Shock Syndrome TSSIA - The Subject Says It All TSSO - Temporal Security (Agency) Special Operations (Strike Team Four) [performance hack] TSSOP - Thin Scale Small Outline Package (EE chip package) TSTL - Too Stupid To Live TSWLM - The Spy Who Loved Me (James Bond) TT - The Tech (MIT) TTANME - The two are not mutually exclusive TTANTS - Things that are not the same TTATS - Things that are the same (cf. TTANTS) TTBOMK - To The Best Of My Knowledge TTC - Toronto Transit Commission TTD - Test To Destruction TTHAW - The Terrorists Have Already Won TTIC - Terrorist Threat Integration Center [based at CIA] TTP - The TTP Project (Dilbert) TTPSSHVARWN - Tech Tool, Problem Set Solvers, Hackers, and Volunteer Air Raid Watchers' Net TTT - Tranquilize, Truth, Terminate (MIT, Assassins' Guild) TTYL - Talk To You Later TTYS - Talk To You Soon TTYT - Talk To You Tomorrow TVP - Textured Vegetable Protein TWATL - The Way And The Light TWIC - Transportation Worker Identification Credential TWINE - The World Is Not Enough (James Bond) TWOP - Television Without Pity (blog) TWP - The Washington Post (journalistic jargon) TWSS - That's What She Said TWTMC - To Whom This May Concern TX - Therapy or Therapeutics (medical) TY - Thank You TYK - Thank You Kindly (IRC) TYSM - Thank You So Much TYVM - Thank You Very Much TZC - Trivial Zephyr Client U2F - Universal Second Factor U3D - Universal 3D (ECMA graphics file format) UA - Undergraduate Association (MIT) UA - United Airlines UAA - Undergraduate and Academic Affairs (MIT) UAAP - Undergraduate Advising and Academic Programs, Office of (MIT) UAL - United AirLines UAP - Undergraduate Association President (MIT) UAP - Undergraduate Advanced Project (MIT Course VI) UAS - Undergraduate Association Senate (MIT) UAT - Undergraduate Association Treasurer (MIT) UAT - User Acceptance Testing UAV - Unmanned Aerial Vehicle UAVP - Undergraduate Association Vice-President UBE - Unsolicited Bulk Email (Usenet, Spam) UBL - Usama Bin Laden (see also OBL) UCAID - University Corporation for Advanced Internet Development UCAV - Unmanned Combat Air Vehicle UCF - Used Computer Factory (MIT) UCITA - Uniform Computer Information Transactions Act UCMJ - Uniform Code of Military Justice (US) UCO - United Christian Orientation (MIT) UCOA - Unified Chart of Accounts (Accounting) UCP - User Control Point (UPnP) UCRL - University of California (Lawrence) Radiation Laboratory UCS - Universal Multiple-Octet Coded Character Set (ISO10646) UCSPI - UNIX Client-Server Program Interface (djb) UDP - Unique Device Name (UPnP) UDRP - Uniform Domain-Name Dispute-Resolution Policy (IANA) UE - User Experience UF - User Friendly (see http://www.userfriendly.org/ ) UFCS - Universal Function Call Syntax UHCI - Universal Host Controller Interface [USB 1.1] UHD - Universal Hardware Driver UHT - Ultra-High Temperature UICC - Universal Integrated Circuit Card UIGEA - Unlawful Internet Gambling Enforcement Act UIST - User Interface Software and Technology UL - Urban Legend ULC - Undergraduate LBGT Community ULC - Universal Life Church UMA - Unlicensed Mobile Access UMAL - Undergraduate Member At Large (MIT ASA) UMB - University of Massachusetts at Boston UML - Unified Modeling Language (Booch/Rumbaugh/Jacobson) UML - User Mode Linux UMOC - Ugliest Manifestation On Campus (MIT, contest run by APO) UMPC - Ultra-Mobile PC UNC - Unified National Coarse Threads (UTS) UNEF - Unified National Extra Fine Threads (UTS) UNF - Unified National Fine Threads (UTS) UNIFEM - United Nations Development Fund for Women UNM - University of New Mexico UPA - United Progressive Alliance (India) UPD - UniParental Disomy (genetics) UPDOG - not much, homey, how 'bout yourself? (amittai) UPDOG - Unfunny Prolonged Discourse Of Geniuses (Amittai) UPN - united paramount network (TV) UPOP - Undergraduate Practice Opportunities Program (MIT) UROP - Undergraduate Research Opportunities Program (MIT) URVD - User Remote Virtual Disk USA - United States Attorney USACO - United States of America Computing Olympiad USAMAH - Universal Systematic Access Mathematical Anonymity Hierarchy USAMO - United States of America Mathematical Olympiad USAPATRIOT - Uniting and Strengthening America by Providing Appropriate Tools Required to Intercept and Obstruct Terrorism USARIEM - U.S. Army Research Institute of Environmental Medicine USC - United States Code USCA - United States Court of Appeals USCGA - United States Coast Guard Academy USD - United States Dollars USMCR - United States Marine Corps Reserve USNR - United States Navy Reserve USP - United States Pharmacopeia USRA - Universities Space Research Association USSC - United States Supreme Court UT - University of Toronto UTA - Undergraduate Teaching Assistant UTC - coordinated universal time UTF - Unicode Transformation Format UTI - Urinary Tract Infection UTI - UUNET Technologies, Incorporated. UTM - Universal Transverse Mercator UTM - Universal Turing Machine UTS - Unified Thread Standard (for screws) UTSA - Uniform Trade Secrets Act UTSA - University of Texas at San Antonio UTSL - Use The Source, Luke UU - Unitarian Universalist UVM - University of Vermont UW - University of Waterloo UWS - Upper West Side (NYC) UX - User experience VAP - (MIT) Visual Arts Program VBG - Very Big Grin VBTB - Vaseline, Blacklight, Twinkies and Beer (MIT senior house) VBNS - Verizon Business Network Services VC - Venture Capital VC - Version Control VDI - Virtual Desktop Infrastructure VDIST - Voice Data Installation Service Team (MIT IS) VDSL - Very high rate Digital Subscriber Line VDSO - Virtual Dynamic Shared Object VEOA - Veterans Employment Opportunities Act of 1998 VERA - Virtual Entity of Relevant Acronyms VERP - Variable Envelope Return Path (SMTP) VFD - Vacuum Fluorescent Display VFD - Variable-Frequency Drive VGG - Vergeltungsflotte (MITSFS) VHLL - Very High Level Language VHS - Vertical Helical Scan VI - "vide infra" (Latin -- see below) VICE - Vast Integrated Computing Environment (Project Andrew; AFS) VIN - Vehicle Identification Number VIP - Versatile Interface Processor (Cisco 7xxx interface card) VLDB - Volume Location DataBase (AFS) VLEC - Voice Local Exchange Carrier VLSM - Variable Length Subnet Mask VMC - Virtual Machine Container VNA - Vector Network Analyzer VNC - Virtual Network Computing VNR - Video News Release VNS - Vagus Nerve Stimulation VNTR - Variable Number of Tandem Repeats (genetics) VOIP - Voice over IP (sometimes VoIP) VOS - VOlume Server (AFS) VPL - Visible Panty Line VPS - Virtual Private Server VPSL - Vice President for Student Life (MIT) [formerly Dean for Student Life] VQF - Vector Quantization Format (Audio) VRLA - Valve-Regulated Lead-Acid (Battery type) VRM - Voltage Regulator Module (Intel Pentium) VRRP - Virtual Router Redundancy Protocol VSLS - Volume Site-Licensed Software (MIT IS&T) VSO - Verb Subject Object (linguistic typology) VSWR - Voltage Standing Wave Ratio VT - VaporTalk VT - Vermont VT - Vertical Tab (ASCII 11) VTVM - Vacuum-Tube Volt Meter VTWM - Virtual Tab Window Manager VUI - Voice User Interface W/E - Weekend W/E - Whatever W3C - World Wide Web Consortium [org] W3M - World Wide Web O Miru (Japanese for "See The Web") (web browser) WAD - Working As Designed WAFF - Warm And Fuzzy Feelings WAI - Working As Intended WAP - Wireless Access Point WAP - Wireless Application Protocol WAPBL - Write Ahead Physical Block Logging (filesystems) WAR - Web ARchive WASP - Wireless Application Service Provider WAUS - [MIT] Windows Automatic Update Service WAYRTTD - What Are You Really Trying To Do? WB - WhiteBoard (Multicast application) WBC - Westboro Baptist Church WC - Working Copy (version control) WCM - Who Cares Most WCS - Worst Case Scenario WDS - Wireless Distribution System WDYT - What Do You Think? (slang) WEBDAV - Web-based Distributed Authoring and Versioning WEBSIS - Web(-based) Student Information System WEEE - Waste Electrical and Electronic Equipment WEP - Wired Equivalent Privacy [IEEE802.11] WFM - Works For Me WFQ - Weighted Fair Queueing (Networking) WFQ - Well-Formed Question (jhawk) WFR - Wilderness First Responder WGA - Windows Genuine Advantage (Microsoft) WGA - Writers Guild of America WGAF - Who gives a fuck? WGS - Women's and Gender Studies WHATS - lookup acronym/abbreviation in database WHO - Western Hacking Organization (MIT) WI - Whitehead Institute WIARTTD - What I Am Really Trying To Do WIBNI - Wouldn't It Be Nice If WIC - Women, Infants, and Children (USDA) WIITWD - What It Is That We Do (BDSM) WILG - Women's Independent Living Group (MIT ILG) WIMP - Weakly Interacting Massive Particle WINE - WINdows Emulator WINE - WINE Is Not an Emulator WIP - Warner Independent Pictures (movies) WIPO - World Intellectual Property Organization WIPP - Waste Isolation Pilot Plant WISE - Weekend Immersion in Science and Engineering (MIT) WISE - Women in Science and Engineering (MIT) WISE - Workshop on Information Systems and Economics WISP - Written Information Security Program (MIT) WKB - Wentzel-Kramers-Brillouin semi-classical approximation (QM) WLAN - Wireless LAN (Local Area Network), e.g., 802.11 WLOG - without loss of generality WLSOM - Wireless System On Module WMBR - Walker Memorial Basement Radio (MIT) WMD - Weapon(s) of Mass Destruction WME - Wireless Multimedia Extensions (802.11) WML - Wireless Markup Language WN - Southwest Airlines (IATA code) WNBA - Womans National Basketball Association WNPP - Work-Needing and Prospective Packages (Debian) WNV - West Nile Virus WOB - Waste of Bandwidth WOFTAM - Waste Of Finances, Time, And Money WOL - Wake On Lan WOSAT - Wizard of Speed and Time (cult movie) WoT - Web of Trust WOTC - Wizards Of The Coast WOTES - Women Of The East Side (MIT annual calendar) WOW - Windows on Windows (compatibility layer) WoW - World of Warcraft WPA - Wi-Fi Protected Access WPAD - Web Proxy Auto-Discovery Protocol WQ - Web Quote (as in -c sipb -i wq) WRED - Weighted Random Early Drop [Networking] WRW - What Runs Where WSDD - Web Services Deployment Descriptor (SOAP) WSDL - Web Service Definition Language WSGI - Web Server Gateway Interface [Python] WSGR - Wilson Sonsini Goodrich & Rosati (Law firm, Silicon Valley) WSOD - White Screen Of Death (websites) WSR - Write Sequence Reordering WSRR - Women's Studies Reading Room (MIT, inside Hayden Library, 14E-311) WTC - World Trade Center WTD - What The Deuce WTF - Web Template Framework (Webkit, formerly KXMLCore) WTF - Why the Fuck WTF - Wisconsin Tourism Federation WTG - Way To Go WTH - Who/What/When/Where/Why The Hell WTLS - Wireless Transport Layer Security WTMD - Walk-Through Metal Detector WTMI - Way Too Much Information (qv TMI) WTN - Working Telephone Number WTO - World Trade Organization WTP - Williness To Pay WTP - Women's Technology Program (MIT) WTP - Wonder Twin Powers WTTW - Word to the Wise (see also WTTWFTVOE) WTTWFTVOE - Words To The Wise From The Voice Of Experience WUA - Wrongly Used Acronym WWBBD - What Would Brian Boitano Do? WWDC - WorldWide Development Conference (Apple) WWF - World Wildlife Fund WWF - World Wrestling Federation WWINI - Why Was I Not Informed?? (keithw) WWIV - World War IV (BBS software) WWJD - What Would Jesus/jhawk Do? WWWWW - Which Was What We Wanted WX - Weather (telegraphy) WYRNTK - What You Really Need To Know W-M - White-magic (MIT Zephyr instance and class) X - ten (Roman numeral) X - X Window System XBEL - XML Bookmark Exchange Language XCB - X Cut Buffers XCI - X-Chromosome Inactivation (AKA lyonization, genetics) xkcd - [webcomic at xkcd.com, or its author Randall Munroe; no expansion] XML - eXtensible Markup Language (SGML descendant) XMMS - The X MultiMedia System, formerly known as x11amp. XMPP - Extensible Messaging and Presence Protocol (IETF working group) XO - OLPC laptop (named after logo) XP - eXtreme Programming XPSE - (Microsoft Windows) XP Starter Edition XQL - XML Query Language XS - eXternal Subroutine (Perl) XS - eXtra Small XSL - eXtensible Stylesheet Language (XML) XSLT - eXtensible Stylesheet Language: Transformations (XML) XSS - Cross Site Scripting (Web security) XWD - X Window Dump XYZ - eXamine Your Zipper XYZPDQ - eXamine Your Zipper Pretty Damn/Darn Quick Y2K - Year 2000 YAAP - Yet Another Ascension Post (Nethack) YAGNI - You Ain't Gonna Need It YAPL - Yet Another Programming Language YASD - Yet Another Stupid Death (Nethack) YFN - Your Friendly Neighborhood ... YGWYPF - You Get What You Pay For YHBT - You Have Been Trolled YHTQNO - You Have the Queue, Number One YILFS - Yours in Leadership, Fellowship, and Service (APO) YK - You Know (begins various acronyms) YK - Your Kink (begins various acronyms) YK - Yukon (Canadian Territory) YKDNHTBMK - Your Kink Does Not Have To Be My Kink YKINMK - Your Kink Is Not My Kink YKINMKBTOK - You Kink Is Not My Kink But That's OK YKINMKBTO - You Kink Is Not My Kink But That's OK YKINMKBYKIOK - Your Kink Is Not My Kink But Your Kink Is OK YKINOK - Your Kink Is Not OK YKIOK - Your Kink Is OK YKK - Yoshida Kogyo Kabushikikaisha (zipper company, now simply YKK) YKTD - You Know The Drill YKWIM - You Know What I Mean YKYBHTLW - (c.f ) YKYBHTLW - You Know You've Been Hacking Too Long When [...] YKYWT - You Know You Want To YM - You Mean/Misspelled YMMD - You Made My Day YODL - Yet Oneother Document Language YOLD - Year of Our Lady of Discord YOLO - You Only Live Once YOLT - You Only Live Twice (James Bond) YRO - Your Rights Online (slashdot) YORP - Yarkovsky-O'Keefe-Radzievskii-Paddack effect YSOD - Yellow Screen Of Death YT - Yours Truly YT - You there? YTMND - You're The Man Now, Dog (website) YUM - Yellowdog Updater, Modified (Red Hat etc.) YW - You're Welcome YWGTTM - You Will Go To The Moon (Album by Moxy Fruvous) YWLIIYL - You Will Like It If You Like YYZ - Toronto's Lester B. Pearson International Airport Z - Zulu (UTC) ZB - ZettaByte ZBA - Zoning Board of Appeal ZBT - Zero Bus Turnaround (type of static RAM) ZBT - Zeta Beta Tau (MIT) ZFC - Zermelo-Fraenkel set theory with axioim of choice ZFM - Zero Failure Modes ZHM - Zephyr Host Manager ZION - ZWGC Is Obsolete Now ZIR - Zero Input Response ZK - Zero-Knowledge ZKP - Zero-Knowledge Proof ZKPOK - Zero-Knowledge Proof of Knowledge ZKS - Zero Knowledge System[s] ZOC - Zone Of Control ZOPA - Zone of Possible Agreement [Negotiations] ZOPE - Z Object Publishing Environment ZSR - Zero State Response ZWGC - Zephyr WindowGram Client