PowerShell/Data/Abbr/general.csv
2023-07-20 15:53:21 +02:00

287 KiB
Raw Blame History

1ABBRMEANING
20Dobvious deed
31AMAir Mechanic 1st Class
41DOne-Dimensional
52AMAir Mechanic 2nd Class
62DTwo-dimensional
72LATwo Letter Acronym
82Lt2nd Lieutenant
93AMAir Mechanic 3rd Class
103DThree-Dimensional
113GThird-generation mobile telephone system
123iInvestors In Industry (venture capitalists)
133MMinnesota Mining and Manufacturing Company
144GFourth-generation mobile telephone system
154WDFour-wheel drive
165DFive-Dimensional
176DSix-Dimensional
187DSeven-Dimensional
198DEight-Dimensional
209DNine-Dimensional
21AAmpere
22A10Atlantic 10 Conference
23A1CAirman First Class
24A4European standard office paper size
25aAAttoampere
26AAAadministration,authorization,and authentication,American Automobile Association ('Triple-A'),anti-aircraft artillery,Amateur Athletic Association (of England),Asistencia Asesoría y Administración (Spanish,'Assistance,Consulting,and Administration'—Mexican professional wrestling promotion)
27AAASAmerican Association for the Advancement of Science
28AAAVAdvanced Amphibious Assault Vehicle
29AADACAlberta Alcohol and Drug Abuse Commission
30AADDAdult attention deficit disorder
31AADTannual average daily traffic
32AAFESArmy and Air Force Exchange Service
33AAISadvanced airborne interceptor simulator
34AAMair-to-air missile
35AAMOFas a matter of fact
36AANAmerican Academy of Nursing
37AANEASAnglo-Australian Near-Earth Asteroid Survey
38AAODLAtmospheric Aerosols and Optics Data Library
39AAPCAccounting and Auditing Policy Committee
40AARPAmerican Association of Retired Persons (now officially known only by the initials)
41AASPEMadvanced air-to-air system performance evaluation model
42AATAustralian Antarctic Territory
43AAVAmphibious Assault Vehicle
44AAWCanti-air warfare commander
45ABAble Seaman (both the rank and the occupation),Alberta (postal symbol)
46ABBASEA Brown Boveri (Swiss-Swedish multinational company)
47ABBAAgnetha,Benny,Björn,Anni-Frid (Swedish pop group)
48ABCthe first three letters of the Latin script known as the alphabet
49ABCabstinence, be faithful, condoms
50ABCActive Body Control
51ABCairway, breathing, circulation
52ABCAlcoholic Beverage Commission
53ABCalien big cat
54ABCalways be careful
55ABCAmerican-born Chinese
56ABCanti-lock brake controller
57ABCatomic, biological, chemical
58ABCS(U.S.) Army Battle Command System
59ABETAccreditation Board for Engineering and Technology
60ABFISTAdvanced Bradley Full Crew Interactive Skills Trainer
61ABGIAddington-Barker Group International
62ABINAgência Brasileira de Inteligência (Brazilian Intelligence Agency)
63ABLAmerican Basketball League
64ABLEAirBorne Law Enforcement (police air support unit)
65ABMCAmerican Battle Monuments Commission
66ABNAustralian Business Number (a number issued by the Australian government as registration of a business and used for taxation purposes)
67ABPIAssociation of the British Pharmaceutical Industry
68ABRSMAssociated Board of the Royal Schools of Music
69ABSacrylonitrile butadiene styrene, or: anti-lock braking system
70ABSAAmalgamated Banks of South Africa
71ABSTRIPSabstraction-based STRIPS
72ABVAlcohol by volume
73ABWAruba (ISO 3166 trigram)
74AcActinium
75ACAdriamycin-Cyclophosphamide (chemotherapy),Air Conditioning,Aircraftman,Alternating Current,Altocumulus,ante Christum (Latin,'before Christ'; see BC),ante cibum (Latin,'before meals'),Antigua and Barbuda (FIPS 10-4 country code),Associazione Calcio (Italian,'football (soccer) club'),A/C,Air Conditioned/Conditioning,Aircraft
76aCAttocoulomb
77AC1Aircraftman 1st Class
78AC2Aircraftman 2nd Class
79ACAAffordable Care Act,shorthand for the Patient Protection and Affordable Care Act,commonly called 'Obamacare',Airspace Control Authority,Airspace Co-ordination Area,A Current Affair
80ACARSAircraft Communications Addressing and Reporting System
81ACBAsociación de Clubes de Baloncesto (Spanish for 'Association of Basketball Clubs')
82ACCACAwdurdod Cymwysterau,Cwricwlwm ac Asesu Cymru (Qualifications,Curriculum and Assessment Authority for Wales)
83ACCDAmerican Coalition of Citizens with Disabilities
84ACCSAir Communications and Control Squadron
85ACDAArms Control & Disarmament Agency
86ACDCAlternating Current Direct Current,the name of an Australian rock music band,a term for a bisexual person,A/Cdre,Air Commodore
87ACDTApple Certified Desktop Technician,Australian Central Daylight Time
88ACESAerolíneas Centrales de Colombia (Spanish,'Central Colombian Airlines'),Auxiliary Campus Enterprises and Services of Alfred State College
89ACFAdministration for Children and Families,American Car and Foundry,American Culinary Federation
90ACHTAverage Call Hold Time
91ACINTAcoustic Intelligence
92ACKAcknowledge (telecommunications; cf. NAK)
93ACLAccess Control List,Anterior cruciate ligament; the initialism can also refer to an injury to this ligament.,Atlantic Coast Line Railroad
94ACLJAmerican Center for Law and Justice
95ACLOSAutomatic CLOS (missile control system)
96ACLSAmerican Council of Learned Societies
97ACLUAmerican Civil Liberties Union,American Communist Lawyers Union (pejorative slang for the above)
98ACMmany,including Association for Computing Machinery; see entry
99ACMC(U.S.) Assistant Commandant of the Marine Corps
100ACNAirborne Communications Node,Australian Company Number (number issued by the Australian government as registration of a limited liability company)
101ACNAAnglican Church in North America
102ACOAirspace Control Order
103ACOBAAdvisory Committee on Business Appointments
104ACOGAmerican College of Obstetricians and Gynecologists
105ACOM(U.S.) Atlantic Command
106ACORNAssociation of Community Organizations for Reform Now
107ACPAfrican,Caribbean and Pacific Group of States,Air Control Point
108ACRAdvanced Concepts and Requirements
109ACRIAfrican Crisis Initiative
110ACRTAdvanced Concepts Research Tool simulator
111ACSAffiliated Computer Services (NYSE ACS),Alaska Communications Service,American Cancer Society,American Chemical Society,Association of Caribbean States,Australian Computer Society
112ACSCArmy Command and Staff College (various nations)
113ACSTAmerican Cooperative School of Tunis
114ACSTAustralian Central Standard Time
115ACTAdaptive Control of Thought (cognitive model),American College Test (ing Program),Australian Capital Territory (also postal symbol),ACT UP,AIDS Coalition to Unleash Power
116ACTDAdvanced Concept Technology Demonstration
117ACTF(U.S.) Army Constructive Training Federation,Australian Children's Television Foundation,ACT-R,ACT-Rational (cognitive model),ACT-R/PM,ACT-R/Perceptual-Motor (cognitive model)
118ACTUAustralian Council of Trade Unions
119ACUAmerican Conservative Union
120ACUFAdvisory Committee on Undersea Features,American Conservative Union Foundation
121ADAir Defence,Andorra (ISO 3166 digram),Anno Domini (Latin,'In the year of our Lord')
122ADAAir Defence Artillery,American Dental Association,Assistant District Attorney,Americans with Disabilities Act (see also the similar but non-acronymic Ada programming language)
123ADACAllgemeiner Deutscher Automobil-Club (German for 'General German Automobile Club')
124ADAGEAir Defense Air to Ground Engagement (simulation)
125ADAPAIDS Drug Assistance Program
126ADASAsiago-DLR Asteroid Survey
127ADATAlesis Digital Audio Tape (recording format)
128ADATSAgricultural Development and Training Society,Air Defence Anti-Tank System,Australian Defence Air Traffic System
129ADBAsian Development Bank
130ADCAide De Camp,U.S. Air Defense Command (1946-1992),Apple Display Connector,Program Against Digital Counterfeiting of Currency
131ADDAnalog Digital Digital (CD quality),Attention-Deficit Disorder,Administration on Developmental Disabilities
132ADDIEAnalyze Design Develop Implement and Evaluate
133ADDNSAdvanced Deployable Day/Night Simulation
134ADGBAir Defence of Great Britain
135ADHDAttention-Deficit Hyperactivity Disorder
136ADHSAttention-Deficit Hyperactivity Syndrome
137ADIAcceptable/Allowable Daily Intake
138ADIZAir Defence Identification Zone
139ADLAnti-Defamation League
140ADMAdministrative,,Admiral,and the U.S. Public Health Service Commissioned Corps,Archer Daniels Midland,Assistant Deputy Minister
141ADOAAir Defence Operations Area
142ADPAdenosine DiPhosphate,Army Doctrine Publication (UK,Canada,Australia),Automatic/Automated Data Processing
143ADRGArc-second Raster Chart (ARC) Digitized Raster Graphics
144ADSActive Denial System,Astrophysics Data System,Attention Deficit Syndrome
145ADSRAttack,Decay,Sustain,Release (sound envelope specification)
146ADTAtlantic Daylight Time (UTC3 hours)
147ADTBArmy Doctrine and Training Bulletin
148ADWAir Defence Warning
149AEArmed Forces Africa/Canada/Europe/Middle East (postal symbol),United Arab Emirates (ISO 3166 digram; FIPS 10-4 country code),Artix Entertainment,American Eagle,A&E, Arts & Entertainment Network,the original name for the U.S. TV channel now known as A&E Network
150AEDTAustralian Eastern Daylight Time
151AEFAmerican Expeditionary Force
152AEGISAirborne Early warning Ground environment Interface Segment (fake etymology)
153AESRAeronautical Equipment Service Record
154AESTAustralian Eastern Standard Time
155aetAfter extra time (Football)
156AEWAirborne Early Warning,Airborne Electronic Warfare
157AFAfghanistan (FIPS 10-4 country code; ISO 3166 digram),Air Force,As f*ck
158aFAttofarad
159AFAU.S. Air Force Academy,Asociación del Fútbol Argentino (Spanish for 'Argentine Football Association')
160AFAICAs Far As I'm Concerned
161AFAICTAs Far As I Can Tell
162AFAIKAs Far As I Know
163AFAIRAs Far As I Remember/Recall
164AFAMAssociazione Friulana di Astronomia e Meteorologia (Italian,'Friuli Association of Astronomy and Meteorology'),Department of African and Afro-American Studies,University of North Carolina at Chapel Hill — notable for its links to the school's academic-athletic scandal in the 2010s
165AFATDSAdvanced Field Artillery Tactical Data System
166AFCEAArmed Forces Communications and Electronics Association
167AFDBAfrican Development Bank
168AFESAutomatic Fire Extinguishing System
169AFGAfghanistan (ISO 3166 trigram)
170AFIFrench Territory of the Afars and Issas (ISO 3166 trigram; obsolete since 1977),'Agencia Federal de Investigaciónes' (México)
171AFISTAbrams Full Crew Interactive Skills Trainer
172AFJApril Fool's Joke
173AFKAway From Keyboard (Internet chat abbreviation)
174AFLACAmerican Family Life Assurance Company of Columbus
175AFOAssociation of Field Ornithologists
176AFOSRU.S. Air Force Office of Scientific Research
177AFPAgence France-Presse (French,'French Press Agency'), Australian Federal Police
178AFQTArmed Forces Qualification Test
179AFRCAir Force Reserve Command
180AFRLAir Force Research Laboratory
181AFROTCAir Force Reserve Officer Training Corps
182AFRTSArmed Forces Radio and Television Service
183AFSCU.S. Air Force Staff College (obsolete; replaced with JFSC), U.S. Air Force Systems Command
184AFSCNU.S. Air Force Satellite Control Network
185AFSPCAir Force Space Command
186AFTAmerican Farmland Trust
187AFVarmoured fighting vehicle
188AGair gunner,Aktiengesellschaft (German,'incorporated'),Algeria (FIPS 10-4 country code),Antigua and Barbuda (ISO 3166 digram),Assemblies of God
189agAttogram
190AgSilver (Latin argentum)
191AGAAB Gas-accumulator ('ah-gah',Swedish company),Advanced Graphics Architecture
192AGARDAdvisory Group for Aerospace Research and Development
193AGARDographAdvanced Guidance for Alliance Research and Development publication
194AGASAAkeno Giant Air Shower Array (cosmic ray detector)
195AGBInternal Nintendo initialism (Advanced Game Boy) for Game Boy Advance
196AGCAdjutant General's Corps (British Army)
197AGDCAustralian Game Developers' Conference
198AGIAuxiliary Group Intelligence
199AGMAnnual General Meeting
200AGNActive Galactic Nucleus
201AGOAngola (ISO 3166 trigram)
202AGPAccelerated Graphics Port
203AGRICOLAAgriculture Online Access
204AGSAlaska Ground Station (LandSat)
205AGTSAdvanced Gunnery Training System
206AGUAmerican Geophysical Union
207AGWAutonomous Guided Weapon
208AhAmpere-hour
209AHAttack Helicopter
210aHAttohenry
211AHAAmerican Heart Association
212AHCPRAgency for Health Care Policy and Research (obsolete; replaced with AHRQ)
213AHECAustralian Health Ethics Committee
214AHPCRCArmy High Performance Computing Research Center
215AHQAir Headquarters
216AHRQAgency for Healthcare Research and Quality
217AHSAmerican Housing Survey
218AIAir Interdiction,Amnesty International,Artificial Insemination,Artificial Intelligence,Anguilla (ISO 3166 digram)
219AIAAerospace Industries Association,American Institute of Architects,Anguilla (ISO 3166 trigram)
220AIAAAmerican Institute of Aeronautics and Astronautics
221AICAfrican Independent Church,Animal Identification Coordinator
222AICDAustralian Institute of Company Directors
223AICMFPAnd I Claim My Five Pounds
224AIDU.S. Agency for International Development
225AIDSAcquired Immune Deficiency Syndrome
226AIMAustralian Institute of Management
227AIMPAurora Incremental Modernization Project
228AIPACAmerican Israel Public Affairs Committee
229AIRAircraft Inventory Record
230AIRFAAmerican Indian Religious Freedom Act
231AIRSAerometric Information Retrieval System (obsolete; replaced with AFS)
232AISAustralian Institute of Sport,Automatic Identification System
233AISB(British Society for the Study of) Artificial Intelligence and the Simulation of Behaviour
234aJAttojoule
235AJAzerbaijan (FIPS 10-4 country code)
236AjaxAsynchronous JavaScript And XML
237AJDAstronomical Julian day
238AJPAllied Joint Publication
239AJPWAll Japan Pro Wrestling
240AKAlaska (postal symbol)
241aKAttokelvin
242AKAAbove knee amputation (orthopaedic usage)
243AKDTAlaska Standard Daylight Saving Time (UTC8 hours)
244AKPAdalet ve Kalkınma Partisi (Turkish,'Justice and Development Party')
245AKSTAlaska Standard Time (UTC9 hours)
246ALAlabama (postal symbol),Albania (FIPS 10-4 country code; ISO 3166 digram),Anno Lucis (Latin,'Year of Light',in Masonic tradition,most often seen on plaques bearing the founding dates of buildings,in years AD and years AL)
247AlAluminium
248aLAttolitre
249ALAÅland Islands (ISO 3166 trigram)
250ALAPAs Long/Late As Possible
251ALARMAir-Launched Anti-Radar Missile
252ALBAlbania (ISO 3166 trigram)
253ALDAccounting Line Designator (nuclear weapon targeting)
254ALERTAdvanced Linked Extended Reconnaissance and Targeting,Attack and Launch Early Reporting to Theatre
255ALFAfrica Leadership Forum,Alien Life Form (cf. ALF (TV series)),Animal Liberation Front
256ALGAlgeria (IOC and FIFA trigram,but not ISO 3166)
257ALGOLALGOrithmic Language
258ALPAAir Line Pilots Association
259ALSAmyotrophic Lateral Sclerosis
260ALSHSAbraham Low Self-Help Systems
261ALSPAggregate Level Simulation Protocol
262ALTEAssociation of Language Testers in Europe
263AmAmericium
264AMAmplitude Modulation and Ante Meridiem; see entry,Armenia (FIPS 10-4 country code; ISO 3166 digram)
265AM1Airman 1st class
266AMCBU.S. Army/Marine Corps Board
267AMFOMAdvanced Missile Fly Out Model
268AMFRAge-specific Marital Fertility Rate,Amplitude Modulation Following Response
269AMFRSAdvanced Multi-Function Radio Frequency System,Automatic Multisensor Feature-based Recognition System
270AMLAcute Myeloid Leukaemia
271AMLCDActive Matrix Liquid Crystal Display
272AMLOAndrés Manuel López Obrador (Mexican politician),Anti-Money Laundering Office (Thailand government agency)
273AMOAtlantic Multidecadal Oscillation
274AMOLEDActive-matrix organic light-emitting diode
275AMOSAdvanced MOrtar System,Air Force Maui Optical and Supercomputing observatory
276AMPAdenosine MonoPhosphate,Automated Mission Planner
277AMRAAMAdvanced Medium-Range Air-to-Air Missile
278AMRDECU.S. Aviation & Missile Research,Development,& Engineering Center
279AMSAgriculture Marketing Service,American Mathematical Society
280AMSAAU.S. Army Materiel Systems Analysis Activity
281AMSOU.S. Army Model and Simulation Office
282AMSUAdvanced Microwave Sounding Unit
283AMTEUK Admiralty Marine Technology Establishment (1977-1984)
284ANAndorra (FIPS 10-4 country code),Netherlands Antilles (ISO 3166 digram)
285aNAttonewton
286ANAAdministration for Native Americans,Afghan National Army,All Nippon Airways,Anti-Nuclear Anti-body,Australian National Airways,Australian Natives' Association
287ANCAfrican National Congress
288ANDAndorra (ISO 3166 trigram)
289ANFOAmmonium nitrate/fuel oil (explosive)
290ANGLiCoAir/Naval Gunfire Liaison Company
291ANLArgonne National Laboratory
292ANMAcoustic Noise Monitor
293ANOVAANalysis Of VAriance
294ANSApplied and Natural Sciences
295ANSIAmerican National Standards Institute
296ANTNetherlands Antilles (ISO 3166 trigram),Antigua and Barbuda (IOC trigram,but not ISO 3166 or FIFA)
297ANTMAmerica's Next Top Model
298ANTYAcronyms,No Thank You
299ANWRArctic National Wildlife Refuge /ˈænwɑr/
300ANZAustralia and New Zealand Banking Group
301ANZACAustralian and New Zealand Army Corps
302AOAngola (FIPS 10-4 country code; ISO 3166 digram),Approach Officer (submarine),Area of Operations
303AOCAir Operations Centre,Air Officer Commanding
304AODAdrenalin O.D. (punk rock band)
305AOIAngle Of Incidence (Arab Organization for Industrialization)
306AOLAmerica OnLine
307AORArea of Responsibility
308AOSTHAdventures of Sonic the Hedgehog
309AOTSAttack of the Show!
310AOUAmerican Ornithologists' Union
311APAdvanced Placement,Air Publication,Andhra Pradesh (Indian state code),Armed Forces Pacific (postal symbol),Associated Press,Auto Pilot
312APBAll Points Bulletin (police jargon)
313APECAsia Pacific Economic Cooperation
314APEDSAMSAA Performance Estimates Data System
315APEXApplied Physics Express
316APHAAmerican Public Health Association
317APHISAnimal and Plant Health Inspection Service
318APLAcute Promyeloid Leukaemia,Anti-Personnel Landmine,Applied Physics Laboratory (Johns Hopkins University)
319APODAerial Port (Airport) Of Debarkation
320APOEAerial Port (Airport) Of Embarkation
321APOLLOApache Point Observatory Lunar Laser-ranging Operation
322APPAllied Procedural Publication
323APRAnnual Percentage Rate
324AQIMAl-Qaeda in the Islamic Maghreb
325ArArgon
326ARAGAdvanced Research and Assessment Group
327ARBAdministrative Review Board
328ARBAArmy Review Boards Agency
329ARCAAutomobile Racing Club of America
330ARCENTUnited States Army Central Command
331ARDAAdvanced Research and Development Activity (became DTO 2006)
332ARFASEAN Regional Forum
333ARGArgentina (ISO 3166 trigram)
334ARHArmed Reconnaissance Helicopter
335ARNetAcquisition Reform Network
336ARPApplied Research Programme
337ARPAAdvanced Research Projects Agency
338ARRCACE Rapid Reaction Corps
339ARRFAllied Rapid Reaction Force
340ARRLAmerican Radio Relay League
341ARSCArctic Region Supercomputing Center
342ARSPACEU.S. Army Space Command
343ARTCCAir Route Traffic Control Center
344ARWGArmy Research Working Group
345ASActionScript
346ASAmerican Samoa (postal symbol; ISO 3166 digram),Australia (FIPS 10-4 country code),Assam / Asom (Indian state code)
347AsArsenic
348aSAttosiemens
349ASAAcetylSalicylic Acid,American Standards Association,Army Security Agency,Atlantic Southeast Airlines
350ASAPAs Soon As Possible
351ASARSAdvanced Synthetic Aperture Radar System,Airborne Search and Rescue System
352asblassociation sans but lucratif (French 'Non-profit organisation')
353ASBOAnti-Social Behaviour Order
354ASCAPAmerican Society of Composers,Authors,and Publishers
355ASCCArmy Service Component Commander,Automatic Sequence Controlled Calculator,Air Standardization Coordinating Committee
356ASCIIAmerican Standard Code for Information Interchange
357ASD(U.S.) Assistant Secretary of Defense,autism spectrum disorder
358ASDICAllied Submarine Detection Investigation Committee (Sonar)
359ASEANAssociation of Southeast Asian Nations
360ASFARAmericans for a Society Free of Age Restrictions
361ASGArea Support Group
362ASICAustralian Securities and Investments Commission,Aviation Security Identification Card
363ASICSAnima sana in corpore sano (Latin,'A sound mind in a sound body') (athletic shoe manufacturer)
364ASIOAustralian Security Intelligence Organisation,Audio stream input output
365ASIPAdvanced System Improvement Program,Army Stationing and Installation Plan,Application-specific instruction-set processor
366ASLAbove Sea Level,American Sign Language (also known as Ameslan),'Age,Sex,Location?' (Internet slang)
367ASMAir-to-Surface Missile,American Samoa (ISO 3166 trigram),American Society for Metals,American Society for Microbiology
368ASMBAmerican Society for Matrix Biology,Adult Swim Message Board
369ASMEAmerican Society of Mechanical Engineers,American Society of Magazine ors
370ASMPAir-Sol Moyenne Portée missile (French 'Medium-range air to surface'),Asymmetric multiprocessing
371ASNAssociate of Science in Nursing
372ASOCAir Sovereignty Operations Centre,Air Support Operations Centre,Airport Security and Operations Centre,Antarctic and Southern Ocean Coalition,Atlanta Symphony Orchestra Chorus,Australian Standard Offence Classification
373ASPActive Server Pages,American Society of Primatologists,Ammunition Supply Point,Application Service Provider (cf internet service provider),Astronomical Society of the Pacific,Association of Surfing Professionals
374ASPIAustralian Strategic Policy Institute
375ASRAlkali-silica reaction,Anti Slip Regulation
376ASRAAMAdvanced Short-Range Air-to-Air Missile
377ASSCAssociation for the Scientific Study of Consciousness
378ASTAtlantic Standard Time (UTC4 hours)
379ASTIAArmed Services Technical Information Agency
380ASTMAmerican Society for Testing and Materials
381ASTREAAerial Support To Regional Enforcement Agencies (sheriff's air support unit)
382ASUWAntiSUrface Warfare
383ASVABArmed Services Vocational Aptitude Battery(taken by juniors in high school in the USA)
384ASVELAssociation Sportive Villeurbanne Éveil Lyonnais (Association Sportive is French for 'Sporting Association'; the club was founded through the merger of AS Villeurbanne and Éveil Lyonnais)
385ASWAntiSubmarine Warfare
386ASWORG(U.S.) AntiSubmarine Warfare Operations Research Group
387ASXAdvanced Stream Redirector,Australian Securities Exchange
388ATAnti-Tank,Ashmore and Cartier Islands (FIPS 10-4 territory code),Austria (ISO 3166 digram),Advanced Technology (IBM Personal Computer/AT)
389AtAstatine
390aTAttotesla
391ATAAdvanced Technology Attachment (IBM Personal Computer),Afghan Transitional Authority,Allen Telescope Array,Antarctica (ISO 3166 trigram)
392ATACAir Transportable Acoustic Communications
393ATACMSArmy TACtical Missile System
394ATAPIAdvanced Technology Attachment Packet Interface
395ATASAir-To-Air Stinger (missile)
396ATATAiken Tactical Airsoft Team / Star Wars vehicle
397ATBActive Time Battle,British Antarctic Territory (ISO 3166 trigram; merged with AQ in 1979)
398ATCAir Training Corps, U.S. Air Transport Command (1942-1948), Athletic Trainer,Certified
399ATCCISArmy Tactical Command and Control Information System
400ATESSAerospace and Telecommunications Engineering Support Squadron
401ATFFrench Southern Territories (ISO 3166 trigram),(U.S.) Bureau of Alcohol,Tobacco,Firearms and Explosives
402ATGAntigua and Barbuda (ISO 3166 and FIFA trigram)
403ATGMAnti-Tank Guided Missile
404ATGWAnti-Tank Guided Weapon
405ATKAttack
406ATLAtlanta,Georgia,the largest city and capital of Georgia
407ATLASAll-Terrain Lifter Army System,Assessment Tool for LAnd Systems
408ATMAutomated Teller Machine,Asynchronous Transfer Mode,At The Moment
409ATNDronning Maud Land (ISO 3166 trigram; merged with AQ in 1983)
410ATOAir Tasking Order,Australian Taxation Office
411ATPAdenosine TriPhosphate,Allied Tactical Publication,Ammunition Transfer Point
412ATSD(U.S.) Assistant Secretary of Defense
413ATSDRAgency for Toxic Substances and Disease Registry
414ATVAll-Terrain Vehicle
415ATWAAir,Trees,Water,Animals
416AUAfrican Union (was OAU before 2000),American University,Astronomical Unit,Australia (ISO 3166 digram),Austria (FIPS 10-4 country code)
417AuGold (Latin Aurum)
418AUCAb Urbe Condita / Anno Urbis Conditae (Latin 'from the founding of the city' / 'in the year since the founding of the city') (of Rome),Area Under the Curve (concentration time curve; medicine)
419AUSAustralia (ISO 3166 trigram)
420AUSCANNZUKUSAustralia,Canada,New Zealand,United Kingdom,United States (security designation)
421AuslanAustralian Sign Language
422AUTAustria (ISO 3166 trigram)
423AUTLArmy Universal Task List
424AVAnguilla (FIPS 10-4 territory code),Audio-Visual,Aviation
425AvAperture value (photographic mode)
426aVAttovolt
427AVAAmerican Viticultural Area
428AVBAudio Video Bridging
429AVDLRAviation Depot Level Repair
430AVGPArmoured Vehicle, General Purpose
431AVIMAviation Intermediate Maintenance
432AVLBArmoured Vehicle Launched Body
433AVMAir Vice-Marshal, Arteriovenous malformation
434AVOApprehended Violence Order
435AVPArubaanse Volkspartij
436AVPAssociation of Volleyball Professionals
437AVREArmoured Vehicle Royal Engineers
438AVTBArmoured Vehicle Test Bed,Aviation Test Bed
439AVUMAviation Unit Maintenance
440AVVOAcute Vaginal Venereal Outbreak
441AWAruba (ISO 3166 digram)
442aWAttowatt
443AWAAmerican Wrestling Association
444AWCAir Warfare Centre
445AWDAll Wheel Drive
446AWEAdvanced Warfighting Experiment
447AWPAwaiting Parts (SM&R code)
448AWSIMAir Warfare SIMulation
449AWSTAustralian Western Standard Time
450AWWAbove Water Warfare
451AXÅland Islands (ISO 3166 digram)
452AXPAmbulance eXchange Point
453AYAntarctica (FIPS 10-4 territory code)
454AYBABTUAll Your Base Are Belong To Us
455AYUAs Yet Unknown
456AZArizona (postal symbol),Azerbaijan (ISO 3166 digram),Alkmaar Zaanstreek (Dutch football club)
457AZEAzerbaijan (ISO 3166 trigram)
458AZURActions en zone urbaine (French for: Urban Operations)
459BARBarbados (IOC trigram,but not FIFA or ISO 3166),British American Racing,Browning Automatic Rifle,Buy-American Restrictions,BARD , Binational Agricultural Research and Development fund (between the US and Israel),BARDA , Biomedical Advanced Research and Development Agency,BART , Bay Area Rapid Transit,BAS , Battalion Aid Station,BASE , Building,Antenna,Span,Earth (parachute from),BASF , Badische Anilin und Soda Fabrik (Baden Aniline and Soda Factory,a German chemicals company),BASIC , Beginner's All-purpose Symbolic Instruction Code (acronym was added later,originally it was simply Basic),BAT , Basic Aid Training,BATF , U.S. Bureau of Alcohol,Tobacco,and Firearms,BATS , Behavior Analysis Training System ,Bradley Advanced Training System,BATTeRS , Bisei Asteroid Tracking Telescope for Rapid Survey,BB[edit]
460BBBarbados (ISO 3166 digram; FIPS 10-4 country code),Boys' Brigade (Christian youth organization),Brigitte Bardot (actress),Bumblebee
461BBBBetter Business Bureau,Blood-brain barrier
462BBCBreeding Bird Census,British Broadcasting Corporation,Bumper to Back of Cab (trucking measurement)
463BBLBe Back Later,Bird Banding Laboratory,British Basketball League
464BBNBolt,Beranek and Newman
465BBQBarbecue
466BBSBreeding Bird Survey (North America),Brigade/Battalion Battle Simulation,Bulletin Board System,BBSRC , U.K. Biotechnology and Biological Sciences Research Council,BBVA , Banco Bilbao Vizcaya Argentaria (Spanish bank)
467BBYOB'nai B'rith Youth Organization
468BCBefore Christ,Blind Copy (in emailers),Boston College,Botswana (FIPS 10-4 country code; from Bechuanaland),British Columbia (postal symbol)
469BCABachelor of Computer Application,Black Coaches & Administrators
470BCCBlind Carbon Copy
471BCCIBank of Credit and Commerce International,Board of Control for Cricket in India,BCD , Binary-Coded Decimal
472BEABanque extérieure d'Algérie,British European Airways (ancestor of British Airways),British Electricity Authority,bel
473BELBelgium (ISO 3166 trigram)
474BENBenin (ISO 3166 trigram)
475BEOBanquet Event Order
476BERCBusiness Environmental Resource Center
477BERBit Error Rate
478BHBahrain (ISO 3166 digram),Belize (FIPS 10-4 country code)
479BHRBahrain (ISO 3166 trigram)
480BNFBackus-Naur Form (computing), British National Formulary
481BNICEBiological,Nuclear,Incendiary,Chemical,and Explosive Agents
482BNPBritish National Party,Banque Nationale de Paris,a predecessor to today's BNP Paribas
483BNSBank of Nova Scotia
484BNSFBurlington Northern Santa Fe (also AAR reporting mark)
485BOBack Orifice,Belarus (FIPS 10-4 country code),Biarritz Olympique (French rugby union club),Bolivia (ISO 3166 digram),Body odor
486BOACBritish Overseas Airways Corporation (predecessor of British Airways)
487BoAMLBank of America Merrill Lynch
488BOCBritish Orthodontic Society, British Oxygen Company
489BÖCBlue Öyster Cult
490BODMASBrackets,Orders,Division,Multiplication,Addition,Subtraction
491BOFHBastard Operator From Hell
492BOGABend Over and Grab Ankles
493BOGOFBuy One,Get One Free
494BOGsBunch of Guys
495BOIBalance Of Investment,Basis Of Issue
496BOLBolivia (ISO 3166 trigram)
497BOMBase Object Model,Bill Of Materials,Block of the Month quilting term,Business opportunity meeting
498BOPDBarrel of Oil Per Day
499BOSBattlefield Operating System
500BOTBalance of Trade,Botswana (IOC and FIFA trigram,but not ISO 3166),Build Operate Transfer,Bank of Thailand,BP[edit]
501BPBattle Position,British Petroleum (today,BP does not officially stand for anything),Solomon Islands (FIPS 10-4 country code; from British Protectorate of the Solomon Islands),Bp , Bishop,BPD , Bipolar Personality Disorder,BPM , Beats Per Minute,BPMo , Business Process Mobility
502BPVBattlefield Planning Visualization,Bovine papillomavirus
503BQBritish Antarctic Territory (former ISO 3166 digram; merged with AQ in 1979),Caribbean Netherlands (current ISO 3166 digram; based on the entity's alternate name of Bonaire,Sint Eustatius and Saba),Navassa Island (FIPS 10-4 territory code)
504BRBrazil (ISO 3166 digram; FIPS 10-4 country code) ,Bihar (Indian state code),British Rail,Break Ranks (marching band term)
505BRABrazil (ISO 3166 trigram)
506BRAGBicycle Ride Across Georgia
507BRASSBreathe,Relax,Aim,Sight,Squeeze (acronym for using a rifle)
508BSABirmingham Small Arms (motorcycles company),Boy Scouts of America,Brigade Support Area
509BSatCoPBenjamin Sniddlegrass and the Cauldron of Penguins
510BSEBovine Spongiform Encephalopathy (better known as mad cow disease)
511BSNBaloncesto Superior Nacional (Spanish,'National Superior Basketball'; top Puerto Rican league),Bank Simpanan Nasional (Malay,'National Savings Bank'; government-owned Malaysian bank)
512BSNLBharat Sanchar Nigam Limited,Bachelor of Science in Nursing
513BSoDBlue Screen of Death (distinct from BSD)
514BSPBetween-Show Promotion,Binary Space Partitioning,Board Support Package,British Standard Pipe (screw thread),Business-sponsored,Bone sialoprotein
515BSTBinary search tree,Blended Sales Tax,Bovine somatotropin,British Summer Time
516BSWBritish Standard Whitworth (screw thread)
517BSXBendigo Stock Exchange
518BTBaal teshuva (Hebrew,'master of repentance') ,used to describe a Jew who adopts Orthodox Judaism as an adult,Bathythermograph,Bhutan (FIPS 10-4 country code; ISO 3166 digram),BitTorrent,British Telecom,the former name of the company now known as BT Group,BTDT , Been There,Done That,Bti , Bacillus thuringiensis israelensis,BTID , Battlefield Target Identification Device,BTIS , Battlefield Target Identification System
519BtBaronet,Bacillus thuringiensis
520BTOBuilt To Order
521BTPBritish Transport Police
522BTRBronetransporter (БТР = Бронетранспортер '(Heavy) Armoured (Personnel) Transporter')
523BTUBritish Thermal Unit
524BTWBy The Way
525BUBulgaria (FIPS 10-4 country code) -,Burma (ISO 3166 digram; obsolete since 1989)
526BUAVBritish Union for the Abolition of Vivisection
527BUG-EBattlefield Universal Gateway Equipment ('buggy')
528BUNOBureau Number (aircraft serial number)
529BURBurma (ISO 3166 trigram; obsolete since 1989)
530BVBackground Vocals -,Battlefield Visualization ,,Bouvet Island (ISO 3166 digram; FIPS 10-4 territory code)
531BVDBradley,Voorhees & Day (underwear manufacturer)
532BVRBeyond Visual Range
533BVTBouvet Island (ISO 3166 trigram)
534B&WBabcock & Wilcox, Black and White, Bowers & Wilkins
535BWBring Wedges (ISO digram)
536BWBotswana (ISO 3166 digram)
537BWABotswana (ISO 3166 trigram)
538BWARSBees,Wasps & Ants Recording Society
539BWCBiological and Toxin Weapons Convention
540BWRBoiling-Water Reactor
541BXBase eXchange
542BYBurundi (FIPS 10-4 country code), Belarus (ISO 3166 digram), Bavaria
543BYOBBring Your Own Bottle (or beer, beverage, or booze) (multiple,but similar,meanings)
544BYOCBring Your Own Computer (play on BYOB)
545BYOFBring Your Own Flask
546BYSByelorussian Soviet Socialist Republic (ISO 3166 trigram; obsolete since 1992)
547BYUBrigham Young University
548BZBelize (ISO 3166 digram)
549BZPBenzylpiperazine
550CCarbon, Coulomb, One Hundred (in Roman numerals)
551cCenti
552C2CConsumer-To-Consumer electronic commerce, Cam-To-Cam internet chat
553c2cthe British rail company formerly known as LTS Rail
554CaCalcium
555CACalifornia (postal symbol),Canada (FIPS 10-4 country code; ISO 3166 digram),Catalonia,Civil Affairs,Close Armour,Cocaine Anonymous,Computer Associates,Counter-Air,Cricket Australia
556CAACanadian Automobile Association,(NORAD) Center for Aerospace Analysis,(U.S.) Center for Army Analysis,(U.S.) Clean Air Act,(U.S. Army) Concepts Analysis Agency,Civil Aviation Authority,Colonial Athletic Association
557CAATCampaign Against Arms Trade,Center for Alternatives to Animal Testing
558CACCalifornia Association of Criminalists,Chronic Asymptomatic [Disease] Carrier
559CACMCentral American Common Market
560CACMCommunications of the ACM
561CADCAMComputer-Aided Design/Computer-Aided Manufacturing
562CADMIDConcept,Assessment,Demonstration,Manufacture,In service,Disposal (life cycle mnemonic)
563CADPATCAnadian Disruptive PATtern
564CAECanadian Aviation Electronics (originally),Certificate in Advanced English
565CAEnClose Action Engagement (constructive simulation)
566CAFCentral African Republic (ISO 3166 trigram),Confederation of African Football (or French Confédération Africaine de Football)
567CAFADCombined Arms For Air Defence
568CAFDECanadian Association of Film Distributors and Exporters,Computer Aided Federation Development Environment
569CAFECorporate Average Fuel Economy standard
570CAIComputer Assisted Instruction
571CAIRCouncil on American-Islamic Relations
572CALABARZONA region in the Philippines: CAvite,LAguna,BAtangas,Rizal,queZON
573CALLCenter for Army Lessons Learned
574CALMCommunications,Air-interface,Long and Medium range
575CalPERSCalifornia Public Employees' Retirement System
576CaltransCalifornia Department of Transpotation
577CAMChemical Agent Monitor,Complementary and alternative medicine,Computer-Aided Manufacturing,Crassulacean acid metabolism (type of photosynthesis)
578CAMRACAMpaign for Real Ale
579CANCanada (ISO 3166 trigram)
580CANDUCANada Deuterium Uranium (nuclear reactor design)
581CanolaCanadian oil,low acid (referring to a specific cultivar of rapeseed bred to have a low erucic acid content)
582CAPESCAPability Evaluation System,Combined Arms Planning and Execution System
583CARECitizens Association for Racial Equality (former New Zealand organisation),Community database on Accidents on the Roads in Europe,Cooperative for Aid and Relief Everywhere (originally Cooperative for American Remittances to Europe)
584CARMONETTEComputerized Monte Carlo Simulation
585CARPComputed Air Release Point
586CARTChampionship Auto Racing Teams (now defunct)
587CASChemical Abstracts Service,Chief of the Air Staff,Close Air Support
588CASACivil Aviation Safety Authority
589CASECellular ammunition storage equipment,Computer-Aided Software Engineering
590CASSCommand Activated Sonobuoy System
591CASTFOREMCombined Arms and Support Task FORce Evaluation Model
592CASTORCanadian Automatic Small Telescopes for Orbital Research
593CATCommunity Acceptance Testing
594CATKCounterattack
595CATSComputer Active Technology Suspension
596CATTCombined Arms Tactical Trainer
597CAVCavalry
598CAVOKCeiling And Visibility OK ('Kav-okay')
599CAWCanadian Auto Workers (trade union)
600CBCitizens' Band radio,Cambodia (FIPS 10-4 country code)
601CBASSECommission on Behavioral And Social Sciences and Education ('sea bass')
602CBCCanadian Broadcasting Corporation,Christmas Bird Count,Cipher-Block Chaining,Cornering Brake Control
603CBECommander of the Order of the British Empire,Cab Beside Engine (see truck)
604CBFConfederação Brasileira de Futebol (Portuguese,'Brazilian Football Confederation')
605CBGBCountry,Blue Grass,and Blues (former New York City nightclub)
606CBLAComparative bullet lead analysis
607CBMCanadian Baptist Ministries
608CBMCommodore Business Machines
609CBMLCoalition Battle Management Language
610CBNCardsApp Brand Number
611CBOLConsortium for the Barcode of Life
612CBOTChicago Board of Trade
613CBRCase-Based Reasoning
614CBRNChemical,Biological,Radiological,or Nuclear (weapon or event)
615CBRNEChemical,Biological,Radiological,Nuclear or [high-yield] Explosive (weapon or event)
616CBSColumbia Broadcasting System,Corps Battle Simulation
617CBUSColumbus,Ohio
618CCcarbon copy
619CCACounter Command Activity
620CCCCanterbury Clothing Company,Civilian Conservation Corps (U.S.,1930s and 1940s),Corpus Christi College,Oxford
621CCCPCentral Committee of the Communist Party,Cyrillic for SSSR (Soyuz Sovetskikh Sotsialisticheskikh Respublik,Russian Союз Советских Социалистических Республик,Union of Soviet Socialist Republics)
622CCDCharge-Coupled Device,Confraternity of Christian Doctrine (Catechism)
623CCFCartoon Cartoon Fridays
624CCGCanadian Coast Guard,Collectible Card Game
625CCGCCanadian Coast Guard Cutter,Canadian Coast Guard College
626CCGHCanadian Coast Guard Hovercraft
627CCGSCanadian Coast Guard Ship,Christ Church Grammar School
628CCHComputer-Controlled Hostile
629CCIFComité consultatif international des communications téléphoniques à grande distance (French for International Telephone Consultative Committee,merged with the CCIT in 1956 to form the CCITT)
630CCIICommand and Control Information Infrastructure,Community Capital Investment Initiative
631CCIRComité consultatif international pour la radio (French for Consultative Committee on International Radio,became the ITU Radiocommunication Sector,ITU-R,in 1992),Commander's Critical Information Requirements
632CCITComité consultatif international télégraphique (French for International Telegraph Consultative Committee,merged with the CCIF in 1956 to form the CCITT)
633CCITTComité consultatif international téléphonique et télégraphique (French for International Telegraph and Telephone Consultative Committee,became the ITU Telecommunication Standardization Sector,ITU-T,in 1992)
634CCKCholecystokinin,Cocos (Keeling) Islands (ISO 3166 trigram)
635CCMCanada Cycle & Motor Co. Ltd. (now split into two separate companies bearing the CCM name,one manufacturing bicycles and the other ice hockey equipment),Contemporary Christian music
636CCOCCanadian Children's Opera Chorus,Crosley Car Owners Club
637CCOPCoalition Common Operating/Operational Picture
638CCPCasualty Collection Point,Communications Checkpoint,Contingency Communications Package
639CCPAConsumer Credit Protection Act
640CCRCreedence Clearwater Revival
641CCRApCanadian Conservative Reform Alliance party
642CCRPCommand and Control Research Program
643CCRTSCommand and Control Research and Technology Symposium
644CCSCSConsultative Committee for Space Data Systems
645CCSCSCoordinadora de Centrales Sindicales del Cono Sur
646CCSILCommand and Control Simulation Interface Language ('cecil')
647CCSKCyclic Code Shift Keying
648CCTCurrent Commitments Team
649CdCadmium
650cdCandela
651CDCompact Disc
652CD1Cluster of Differentiation 1 (a small gene family)
653CDAUK Centre for Defence Analysis
654CDDCapabilities Development Document
655CDEChemical Defence Equipment
656CDIACCarbon Dioxide Information Analysis Center ('see-dee-ack')
657CDipAFCertified Diploma in Accounting and Finance
658CDLCommercial driver's license
659CDMClean Development Mechanism (Kyoto protocol), Cold Dark Matter (astronomy)
660CDMACode Division Multiple Access
661CDMSIICryogenic Dark Matter Search II
662CdrCommander
663CDTCentral Daylight Time (UTC5 hours)
664CdtCommandant
665CeCerium
666CEChristian/Common Era
667CEACampaign Effectiveness Analysis
668CECOMU.S. Army Communications and Electronics Command
669CEDEXCourrier d'entreprise à distribution exceptionnelle (French,'Company Mail with Exceptional Distribution'; 'exceptional' refers to the volume of mail)
670CEGEPCollège d'enseignement général et professionnel (French,'College of General and Vocational Education')
671CEICompetitive Enterprise Institute
672CENTCOMUnited States Central Command
673CENTOCentral Treaty Organization (Baghdad Pact)
674CENZUBCentre d'entraînement aux actions en zone urbaine (French,'Urban Operations Training Centre')
675CEOChief Executive Officer
676CEPCircular Error Probable
677CEPTConférence européenne des administrations des postes et des télécommunications (French,'European Conference of Postal and Telecommunications Administrations')
678CERCLAU.S. Comprehensive Environmental Response,Compensation,and Liability Act (Superfund)
679CERDECU.S. Communications-Electronics Research,Development and Engineering Center
680CERGACentre de recherches en géodynamique et astrométrie (French,'Astrometry and Geodynamics Research Centre')
681CERNCentre européen pour la recherche nucléaire (French,'European Organization for Nuclear Research')
682CERTComputer Emergency Response Team
683CESSCentre for Earth Science Studies (India)
684CESTCentral European Summer Time
685CETCentral European Time
686CEWCCouncil for Education in World Citizenship
687CfCalifornium
688CFCanadian Forces,Central African Republic (ISO 3166 digram),Republic of the Congo (FIPS 10-4 country code)
689CFACat Fanciers' Association,Chartered Financial Analyst,Colour Filtering Array,County Fire Authority,Covering Force Area
690CFARChristine's,Federal Acquisition Regulation
691CFCChloroFluoroCarbon,Canadian Fish Company
692CFESContinuous Flow Electrophoresis System
693CFFZCall For Fire Zone
694CFGContext-free grammar,Control flow graph
695CFHTCanada-France-Hawaii Telescope
696CFICenter for Inquiry (CSICOP)
697CFLCanadian Football League,Co-ordinated Fire Line
698CFLCCCoalition Forces Land Component Command
699CFMCertified Facilities Manager
700CFOChief Financial Officer
701CFPCall for papers, College Football Playoff, Common Fisheries Policy (EU)
702CFRCode of Federal Regulations,Căile Ferate Române (Romanian,'Romanian Railways')
703CFRPCarbon fibre reinforced plastic
704CFSChronic Fatigue Syndrome
705CFSPCommon Foreign and Security Policy
706CFUColony Forming Unit in Microbiology
707CFVCavalry Fighting Vehicle
708CFZCritical Friendly Zone
709CGClient Group,Computer Graphics,Controls Group,Democratic Republic of the Congo (FIPS 10-4 country code),Republic of the Congo (ISO 3166 digram)
710CGHComparative Genomic Hybridisation
711CGIGCross-Government Implementation Group
712CGORepublic of the Congo (IOC and FIFA trigram,but not ISO 3166)
713CGSChief of the General Staff
714CGTCapital Gains Tax
715chch(L) is used to denote the Chern character of a line bundle
716CHChieftain tank,China (FIPS 10-4 country code),Switzerland (ISO 3166 digram; from Latin Confoederatio Helvetica)
717CHAMPUS(U.S.) Civilian Health and Medical Program of the Uniformed Services (now known as TRICARE)
718CHAOSCambridge Heart Anti-Oxidant Study
719CHAPSClearing House Automated Payment System
720CHDKCanon Hack Development Kit (Canon camera firmware hack)
721CHESwitzerland (ISO 3166 trigram; from Latin Confoederatio Helvetica)
722CHIColumbia Helicopters,Inc
723CHiPCalifornia Highway Patrol
724CHIPSCosmic Hot Interstellar Plasma Spectrometer
725CHLChile (ISO 3166 trigram)
726CHLACore Historical Literature of Agriculture
727CHNChina (ISO 3166 trigram)
728CHOGMCommonwealth Heads of Government Meeting
729CHPSOCalifornia Hospital Patient Safety Organization
730CHRSCanadian Heart Rhythm Society
731CHTCertified Hand Therapist
732CIChile (FIPS 10-4 country code),Côte d'Ivoire (ISO 3166 digram),Counter-Intelligence,101 (in Roman numerals)
733CiCurie
734CIACairo International Airport,Central Intelligence Agency,Culinary Institute of America
735CIAOCritical Infrastructure Assurance Office,Component-Integrated ACE ORB
736CIBComplete In Box (Internet auction/trading listings)
737CIBCCanadian Imperial Bank of Commerce
738CICSCustomer Information Control System (IBM mainframe software; 'kicks' or 'C-I-C-S')
739CIDCertified Interior Designer
740CIEFComité international d'enregistrement des fréquences (International Frequency Registration Board)
741CIFCost,Insurance,and Freight (Paid) (shipping)
742CIMMYTCentro Internacional de Mejoramiento de Maíz Y Trigo (Spanish,'International Maize and Wheat Improvement Center')
743CINCCommander in Chief
744CINEOSCampo Imperatore Near-Earth Object Survey
745CIOChief information officer,Congress of Industrial Organizations
746CIPE(European) Centre for International Political Economy
747CIR(Commander's) Critical Information Requirements
748CIRCorotating Interaction Region
749CISCanadian Interuniversity Sport,Commonwealth of Independent States,Command and Information System,Communication and Information System
750CISA(U.S.) C4I Integration Support Activity
751CISBComplete In Sealed Box (Internet auction/trading listings)
752CISPRComité international spécial des perturbations radioélectriques (Special International Committee on Radio Interference)
753CISSPCertified Information Systems Security Professional
754CITESConvention on International Trade in Endangered Species (of Wild Fauna and Flora) ('sigh-tease')
755CIVCôte d'Ivoire (ISO 3166 trigram)
756CIVETSColombia,Indonesia,Vietnam,Egypt,Turkey,South Africa (economics)
757CIVPOPCivilian Population
758CIWSClose-In Weapon System
759CJCayman Islands (FIPS 10-4 country code),Criminal Justice
760CJCCanadian Jewish Congress,Cold Junction Compensation
761CJCSChairman of the Joint Chiefs of Staff
762CJDChronological Julian Day,Creutzfeldt-Jakob Disease
763CJOChief of Joint Operations
764CJTFCombined Joint Task Force
765CKCocos (Keeling) Islands (FIPS 10-4 country code),Cook Islands (ISO 3166 digram)
766CKAcommonly known as, Canada Kicks Ass
767CKNDCodename: Kids Next Door
768CLChile (ISO 3166 digram),Co-ordination Line,One Hundred and Fifty (in Roman numerals)
769ClChlorine
770CLAClutterers Anonymous
771CLECCompetitive Local Exchange Carrier
772CLEMARSCalifornia Law Enforcement Mutual Aid Radio System
773CLICCompact LInear Collider
774CLOCornell Lab of Ornithology
775CLOSCommand to Line-Of-Sight (missile control system)
776CLPFCCentroLateral PreFrontal Cortex
777CLRPCollege Loan Repayment Program
778CMCameroon (FIPS 10-4 country code; ISO 3166 digram),Cruise Missile,Nine Hundred (in Roman numerals)
779CmCurium
780CMAU.S. Chemical Materials Agency,Country Music Association (also used to refer to the organization's annual awards),Crystal Meth Anonymous
781CMHCCanada Mortgage and Housing Corporation
782CMIIAWCorrect me if I am wrong
783CMISCommon management information service
784CMJChristopher Martin-Jenkins (BBC sports commentator)
785CMLLConsejo Mundial de Lucha Libre (Spanish,'Worldwide Wrestling Council'—Mexican professional wrestling promotion)
786CMMCapability Maturity Model
787CMMCCorps Materiel Management Centre
788CMMLChronic MyeloMonocytic Leukemia,Continuous Media Markup Language
789CMOSCanadian Meteorological and Oceanographic Society,(The) Chicago Manual of Style,Complementary Metal Oxide Semiconductor
790CMPCommon [Operating/Operational] Maritime Picture
791CMPDCharlotte Mecklenburg Police Department
792CMPDChronic Myeloproliferative Disease
793CMRCameroon (ISO 3166 trigram),Coaxial Main Rotors (helicopter type)
794CMSCenters for Medicare and Medicaid Services,The Chicago Manual of Style
795CMTCountry Music Television
796CMUCarnegie Mellon University,Central Michigan University,Concrete Masonry Unit
797CMWMarconi's Wireless Telegraph Company of Canada,Canadian Manufacturing Week,Canadian Music Week,Catherine McAuley Westmead (school in New South Wales,Australia),Chicago,Missouri and Western (Railway),Compartmented Mode Workstation,Compton's Most Wanted,Continuous Microwave (processing technology),Custom Maintenance Wizard (Microsoft Office Resource Kit)
798CMYKCyan Magenta Yellow Key/blacK (colour model)
799CNCanadian National (railway; also the AAR reporting mark for said company),China (ISO 3166 digram),Comoros (FIPS 10-4 country code)
800CNACenter for Naval Analyses,Certified Network Administrator,Computer Network Attack,Continental (Casualty Company),National (Fire Insurance Company),and American (Casualty Company),the three companies that merged to form what is now known as CNA Financial
801CNBCConsumer News and Business Channel
802CNDCampaign for Nuclear Disarmament,Computer Network Defence
803CNECanadian National Exhibition,Computer Network Exploitation,Certified Network Engineer
804CNFCost and Freight
805CNIClinical Nursing Intern
806CNICommunications,Navigation and Identification
807CNNCable News Network,Cellular Nonlinear Network
808CNVCopy-Number Variable (genetics)
809CoCobalt
810COBClose Of Business [day]
811COBRAConsolidated Omnibus Budget Reconciliation Act of 1985
812CODCash On Delivery,Democratic Republic of the Congo (ISO 3166 trigram)
813CoDACo-Dependents Anonymous
814COGENTCognitive Objects within a Graphical EnviroNmenT
815COILChemical Oxygen Iodine Laser
816COKCook Islands (ISO 3166 trigram)
817COLColombia (ISO 3166 trigram)
818COLACost Of Living Adjustment
819CONADU.S. Continental Air Defense Command
820CONMEBOLConfederación Sudamericana de Fútbol or Confederação Sul-Americana de Futebol (respectively Spanish and Portuguese for 'South American Football Confederation')
821CONUSContinental United States
822COOChief Operating Officer
823COPEU.K. Committee On Publication Ethics
824COPUSU.K. Committee on the Public Understanding of Science
825CORDCommon Operational Requirements Document
826COREConsortium for Oceanographic Research and Education
827COSCooper Ornithological Society
828COSERCOoperative SERvice
829CoTCar of Tomorrow (former NASCAR race car design)
830COTSCommercial Off The Shelf
831CPCanadian Pacific,Check Point,Command Post,Club Penguin
832CPACertified Public Accountant
833CPCUCertified Property Casualty Underwriter
834CPDCapabilities Production Document
835CPECertificate of Proficiency in English
836CPECertified Professional Ergonomist
837CPFCalibration Parameter File,Canadian Patrol Frigate
838CPGClinical Practice Guideline
839CPIMCertification on Production and Inventory Management
840CPIRComputationally-Private Information Retrieval
841CPONCertified Pediatric Oncology Nurse
842CPPCCChinese People's Political Consultative Conference
843CPRCanadian Pacific Railway
844CPRCardiopulmonary resuscitation
845CPSMContinuous Phase Shift Modulation
846CPSUCommunist Party of the Soviet Union
847CPTContingency Planning Team
848CPUContract Postal Unit
849CPVCape Verde (ISO 3166 trigram)
850CPXCommand Post eXercise
851CQCarrier Qualification,Central Queensland,Charge of Quarters,Congressional Quarterly,Constellation Airlines (IATA airline designator),Northern Mariana Islands (FIPS 10-4 territory code)
852CrChromium
853CRCoral Sea Islands (FIPS 10-4 territory code),Costa Rica (ISO 3166 digram)
854CRAMCombined Radiometric Correction Model
855CRDCapstone Requirements Document
856CREBCyclic AMP-response Element Binding (protein)
857CREEPCommittee for the Re-Election of the President,a pejorative nickname used by opponents
858CRENChristian Real Estate Network Real Estate Association
859CRIChina Radio International,Costa Rica (ISO 3166 trigram)
860CRIPLConsolidated Remain-In-Place List
861CRMCardiac Rhythm Management,Customer Relationship Management
862CROCroatia (IOC and FIFA trigram,but not ISO 3166)
863CRPCommittee for the Re-Election of the President,Control and Reporting Post
864CRTCardiac Resynchronization Therapy,Cathode Ray Tube,Chinese Remainder Theorem
865CRTCCanadian Radio-television and Telecommunications Commission
866CsCaesium
867CSACanadian Soccer Association,Canadian Space Agency,Canadian Standards Association,Child Support Agency,Command Staff Advisor,Community-supported agriculture,Confederate States of America,Corps Storage Area,Czech Airlines,C/S/A,CINC,Service,and Agency
868CSCClosed Spacelike Curve (relativity),Compact system camera,Computer Sciences Corporation,Computer Security Centre,CSCC Canadian Society of Clinical Chemists
869CSERIAC(U.S. DoD) Crew Systems Ergonomics Information Analysis Center
870CSGCorps Support Group
871CSIsee entry
872CSICOPCommittee for the Scientific Investigation of Claims of the Paranormal (became the Committee for Skeptical Inquiry in 2006)
873CSIPCommercial Stable Image Platform (AMD)
874CSKCzechoslovakia (ISO 3166 trigram; obsolete since 1993)
875CSLU.K. Central Science Laboratory
876CSPICenter for Science in the Public Interest
877CSRControl Supply Rate
878CSRCorporate Social Responsibility
879CSRCConflict Studies Research Centre
880CSRFCross-Site Request Forgery
881CSTCentral Standard Time (UTC6 hours)
882CTComputed tomography (medical scan also known as a CAT scan),Central Time zone,Chrono Trigger (Computer/Video games),Connecticut (postal symbol),Canterbury (postal symbol),Chhattisgarh (Indian state code)
883CTBTComprehensive [Nuclear] Test Ban Treaty
884CTDBCompact Terrain Data Base (file format)
885CTGFconnective tissue growth factor
886CTICo-operative Target Identification
887CTILCritical Tracked Items List
888CTISCentral Tire Inflation System
889CTMSClinical Trial Management System
890CTSSCompatible Time-Sharing System
891CTUCounter Terrorist Unit (fictional branch of the Central Intelligence Agency in the television action series 24)
892CTVTCanine Transmissible Venereal Tumour
893CuCopper (Latin Cuprum)
894CUBCuba (ISO 3166 trigram)
895CUCVCommercial Utility Cargo Vehicle
896CUPSCommon Unix Printing System
897CUPWCanadian Union of Postal Workers
898CUREAConsortium for Undergraduate Research and Education in Astronomy
899CuWCopper-tungsten pseudo-alloy (from the chemical symbols of the two component elements)
900CUWCuraçao (ISO 3166 trigram)
901CVcurriculum vitae (résumé)
902CVLLCrypto Variable Logic Label
903CVSDContinuous Variable Slope Delta (modulation)
904CVTContinuously Variable Transmission
905CWCalendar Week, or: Continuous Wave, or: Clothes Washer, or: Cook Islands (FIPS 10-4 territory code)
906CWCChemical Weapons Convention
907CWRUCase Western Reserve University
908CWSCanadian Wildlife Service
909CXChristmas Island (ISO 3166 digram),or: One Hundred and Ten (in Roman numerals)
910CXRChristmas Island (ISO 3166 trigram)
911CYCalendar year, or: Cyprus (ISO 3166 and FIPS 10-4 country code digram)
912CYMCayman Islands (ISO 3166 trigram)
913CZECzech Republic (ISO 3166 trigram)
914CZF(Christian Zombie Fan)
915CZMA(US) Coastal Zone Management Act
916dDeci
917DDeuterium
918DAFIFDigital Aeronautical Flight Information File
919DAKDisney's Animal Kingdom
920DAODivision Ammunition Officer
921DAREDrug Abuse Resistance Education
922DARO(U.S.) Defense Airborne Reconnaissance Office
923DARPAU.S. Defense Advanced Research Projects Agency
924DASDefensive Aids Suite
925DASD(U.S.) Deputy Assistant Secretary of Defense
926DASLDatapoint's Advanced Systems Language
927DAU(U.S.) Defense Acquisition University
928DAWN(U.S.) Drug Abuse Warning Network
929dBDecibel
930DBDeutsche Bahn
931DbDubnium
932DBADe Bellis Antiquitatis (miniature wargaming rules)
933DBBL(U.S. Army Simulation Center) Dismounted Battlespace Battle Laboratory
934DBDODesert BDO
935DBEDame Commander of the Order of the British Empire
936DBFDetection By Fire (weapon launch signature)
937DBRDe Bellis Renationis (miniature wargaming rules)
938DBRADavis-Bacon Related Acts
939DBSDirect Broadcast Services (television)
940DCAA(U.S.) Defense Contract Audit Agency
941DCASDevon and Cornwall Archery Society
942DCCDallas Christian College
943DCD[Organ] Donation after Cardiac Death
944DCEData Communication Equipment
945DCFCDeath Cab for Cutie
946DCLDisney Cruise Line
947DCNDeacon
948DCOMDisney Channel Original Movie
949DCSOPSDeputy Chief of Staff for Operations and plans
950DCWDigital Chart of the World
951DCYSCDiscovery Channel Young Scientist Challenge
952DDdue diligence and dear daughter (increasingly prevalent on social mailing lists,blogs,and bulletin boards)
953DDADeputy District Attorney
954DDNU.S. Defense Data Network
955DDSDoctor of Dental Surgery
956DEADrug Enforcement Administration
957DEADrug Enforcement Agency
958DeCA(U.S.) Defense Commissary Agency
959DEFCONDefence readiness condition
960DELTDual Ended Line Test (ing)
961DEPSECDEF(U.S.) Deputy Secretary of Defense
962DERABritish Defence Evaluation and Research Agency (1995-2001)
963DESDeep Ecliptic Survey
964DEUGermany (ISO 3166 trigram)
965DFAS(U.S.) Defense Finance and Accounting Service
966DFCBData Format Control Book
967DfIDUK Department for International Development
968DFMDiscrete Field Model see Superluminal motion
969DFMDynamic Flowgraph Methodology
970DFSPDermatofibrosarcoma protuberans
971DfTUK Department for Transport
972DGPSDifferential GPS
973DGZDesired Ground Zero
974DHADocosaHexaenoic Acid
975DHHS(U.S.) Department of Health and Human Services
976DHRA(U.S.) DoD Human Resources Activity
977DHSU.S. Department of Homeland Security
978DHSSUK Department of Health and Social Security
979DHTFYSSU.S. Don't Have Time For You Silly S****
980DHYDahomey (ISO 3166 trigram; became BEN for Benin in 1977)
981DIAU.S. Defense Intelligence Agency
982DIACDepartment of Immigration and Citizenship (Australia) [1]
983DiCDesign Island Centre (computing usually used in a teaching situation)
984DICASSDIrectional Command Activated Sonobuoy System
985DIFARDIrectional Frequency Analysis and Recording
986DIMEDense Inert Metal Explosive
987DIPDual In-line Package (electronics)
988DIPSDefense independent pitching statistics
989DIRDefence Industrial Research
990DISCOMDivision Support Command
991DISEDeployable Intelligence Support Element
992DISSTAFDIS Search and Target Acquisition Fidelity experiment
993DITYDo-It-Yourself
994DIVADDivision Air Defence
995DIYDo It Yourself
996DJIDjibouti (ISO 3166 trigram)
997DKDenmark (ISO 3166 digram)
998DLDexter's Laboratory
999DLICDetachment Left-In-Contact
1000DLIRDepot-Level Inspection and Repair
1001DLPMCDorsoLateral PreMotor Cortex
1002DLRPData Link Reference Point
1003DLSDeep Lens Survey
1004DLSA(U.S.) Defense Legal Services Agency
1005DLScDiploma in Library Science
1006DLTBGYDDon't let the bastards grind you down
1007DMC(U.S.) Defense Management Council
1008DMCADigital Millennium Copyright Act
1009DMMDigital Multimeter
1010DMOCDistributed Mission Operations Centre
1011DMPA(U.S.) Defense Medical Programs Activity
1012DMPFCDorsoMedial PreFrontal Cortex
1013DMPKDrug Metabolism and Pharmacokinetics
1014DMRBDesign Manual for Roads and Bridges
1015DMSU.S. Defense Message System
1016DMSPU.S. Defense Meteorological Satellite Program
1017DMTDimethyltryptamine
1018DMVDepartment of Motor Vehicles
1019DMZDeMilitarized Zone
1020DNDeacon
1021DNAWDay Night All Weather
1022DNDiDrugs for Neglected Diseases initiative
1023DNDOU.S. Domestic Nuclear Detection Office
1024DNKDenmark (ISO 3166 trigram)
1025DNMDefence Nuclear Material
1026DNRDo Not Resuscitate
1027DNSDomain Name System
1028DOBDate Of Birth
1029DODU.S. Department of Defense
1030DODAFU.S. Department of Defense Architectural Framework
1031DoDDU.S. Department of Defense Directive
1032DoDEA(U.S.) Department of Defense Education Activity
1033DOEU.S. Department of Energy
1034DOHCDual-OverHead-Cam engine
1035DOIU.S. Department of the Interior
1036DORADefence of the Realm Act
1037DOSDensity of State
1038DOTAshort-form for DEFENSE OF THE ANCIENTS a popular online epic game
1039DotDDeal of the Day (marketing gimmick)
1040DOWDied of Wounds
1041DPDivision de production (Algerian petroleum company)
1042DPAUK Defence Procurement Agency
1043DPCODouble-Pole Change Over
1044DPDTDouble-Pole Double-Throw
1045DPIDots Per Inch
1046DPICMDual-Purpose Improved Conventional Munition
1047DPKOUN Department for Peacekeeping Operations
1048DPMO(U.S.) Defense Prisoner of War/Missing Personnel Office
1049DPPDBDigital Point Positioning Database
1050DPRKDemocratic People's Republic of Korea
1051DPSTDouble-Pole Single-Throw
1052DRCDemocratic Republic of the Congo
1053DRDCDefence Research & Development Canada
1054DREADefence Research Establishment Atlantic (obsolete 2002)
1055DRESDefence Research Establishment Suffield (obsolete 2002)
1056DRETDefence Research Establishment Toronto (obsolete 2002)
1057DREVDefence Research Establishment Valcartier (obsolete 2002)
1058DRIC(U.S.) Defense Research Information Center
1059DRMS(U.S.) Defense Revitalization and Marketing Service
1060DRPRDrawing Practices
1061DRTDocument Related Technologies
1062DsDarmstadtium
1063DSASDisney Sing Along Songs
1064DSB(U.S.) Defense Science Board
1065DSCSU.S. Defense Satellite Communications System
1066DSCSOCDSCS Operations Center
1067DSEDry Sheep Equivalent
1068DSGDirect-Shift Gearbox
1069DSIDDismounted Soldier Identification System
1070DSLDigital Subscriber Line
1071DSLRDigital single-lens reflex (camera)
1072DSMDiagnostic and Statistical Manual of Mental Disorders
1073DSNDeep Space Network
1074DSPLDesign Specialists and Plans Language
1075DSRDeformed Special Relativity
1076DSTDaylight Saving Time
1077DSTLBritish Defence Science and Technology Laboratory
1078DSWA(U.S.) Defense Special Weapons Agency
1079DTADental Technologists Association
1080DTDDigital Terrain Data
1081DTGDate-Time Group
1082DTHDirect To Home (television)
1083DTIUK Department of Trade and Industry
1084DTIC(U.S.) Defense Technical Information Center
1085DTLDiode-Transistor Logic (electronics)
1086DTMFDual-tone multi-frequency signaling
1087DTODisruptive Technology Office (was ARDA)
1088DTRDetermine The Relationship
1089DTSA(U.S.) Defense Technology Security Administration
1090DUMBODown Under the Manhattan Bridge Overpass (Brooklyn neighborhood)
1091DUSD(U.S.) Deputy Under-Secretary of Defense
1092DVLCUK Driver and Vehicle Licencing Centre
1093DVMDoctor of Veterinary Medicine
1094DVODirect View Optics
1095DVOMDigital Volt-Ohm Meter
1096DVPvarious meanings (disambiguation page)
1097DWDrum Workshop
1098DWIMDo What I Mean
1099DWMDoctor Who Magazine
1100DWTSDancing with the Stars
1101DWWDown with Webster
1102DXADual-energy X-ray Absorptiometry
1103DXMDeXtroMethorphan
1104DYDahomey (ISO 3166 digram; obsolete since 1977)
1105DyDysprosium
1106DZAAlgeria (ISO 3166 trigram)
1107EEast
1108EABUExplain Acronyms Before Use
1109EACEchelons Above Corps
1110EAPCEuro-Atlantic Partnership Council
1111EASTExperimental Advanced Superconducting Tokamak
1112EBDElectronic Brake Distribution
1113EBEExtraterrestrial Biological Entity
1114EBSAEmployee Benefits Security Administration
1115EBWElectron Beam Welding
1116EBWExploding BridgeWire
1117ECASSEuropean Centre for Analysis in the Social Sciences [1]
1118ECBREuropean Coalition for Biomedical Research
1119ECCMElectronic Counter-Counter-Measures
1120ECFSElectronic Case Filing System
1121ECGElectrocardiogram
1122ECHREuropean Convention on Human Rights
1123ECJEuropean Court of Justice
1124ECLEmitter Coupled Logic (electronics)
1125ECommHREuropean Commission on Human Rights
1126ECSCEuropean Coal and Steel Community (distant ancestor of the EU)
1127ECTElectroConvulsive Therapy
1128ECtHREuropean Court of Human Rights
1129EDAEuropean Defence Agency
1130EDACError Detection And Correction
1131EDCSEnvironmental Data Coding Specification
1132EDHEastman Dental Hospital
1133EDSAEpifanio de los Santos Avenue (a major thoroughfare in Manila with great significance to post-1980 Philippines history)
1134EDTEastern Daylight Saving Time (UTC4 hours)
1135EECEuropean Economic Community (predecessor of the EU)
1136EEGElectroEncephaloGram
1137EENTEnd Evening Nautical Twilight
1138EEOEqual Employment Opportunity
1139EEOC(U.S.) Equal Employment Opportunity Commission
1140EEZEconomic Exclusion Zone or Exclusive Economic Zone
1141EFFElectronic Frontier Foundation
1142EFLEnglish as a Foreign Language
1143EFMEnterprise Feedback Management
1144EFOAEuropean Fuel Oxygenates Association
1145EFSAEuropean Food Safety Authority
1146EFTElectronic Fund Transfer
1147EFVExpeditionary Fighting Vehicle
1148EGEgypt (ISO 3166 digram; FIPS 10-4 country code)
1149EGCGEpiGalloCatechin-3-Gallate
1150EGISErieye Ground Interface Segment
1151EGRETEnergetic Gamma-Ray Experiment Telescope
1152EGYEgypt (ISO 3166 trigram)
1153EHFExtremely High Frequency
1154EHREquipment History Record
1155EiExbi
1156EIIreland (FIPS 10-4 country code; from Éire)
1157EIAEnvironmental Impact Assessment
1158EIAHEncyclopedia of Iranian Architectural History
1159EIAHEnvironnements Informatiques pour l'Apprentissage Humain
1160EICEast India Company
1161EICSEast India Company's Service
1162eIDelectronic ID
1163EIRPEffective Isotropic Radiated Power
1164EISEnvironmental Impact Statement
1165EJExajoule
1166EKGElectrocardiogram (from German Elektrokardiogramm)
1167EKMSElectronic Key Management System
1168ELExalitre
1169ELINTElectronic Intelligence
1170ELLEnglish Language Learner
1171ELMEdge-Localised Mode (plasma physics)
1172ELOElectric Light Orchestra
1173ELSSEmergency Life Support Stores
1174EMElectroMagnetism/ElectroMagnetic
1175EmExametre
1176EMAEuropean Medicines Agency
1177EMCON(Electromagnetic) Emissions Control
1178EMDGEuro-Missile Dynamics Group
1179EMDREye Movement Desensitisation and Reprocessing
1180EMEAEurope,Middle East and Africa
1181EMGElectroMyoGraph
1182EMPElectroMagnetic Pulse
1183EMSEmergency Medical Services
1184EMTEmergency Medical Technician
1185ENCODEEncyclopedia of DNA Elements (human genome data project)
1186ENEEast North-East
1187ENGEngland (FIFA trigram; not eligible for an ISO 3166 or IOC trigram)
1188ENTECEuro NATO Training Engineer Centre
1189ENVLEnvelope
1190ENYEnemy
1191EODExplosive Ordnance Disposal
1192EOGElectroOculoGraphy
1193EOMEnd of Message
1194EOSATEarth Observation Satellite
1195EOSDISEarth Observation Satellite Data and Information System
1196EPEuropean Parliament
1197EPExtended play
1198EPCOTExperimental Prototype Community Of Tomorrow
1199EPGSEOS Polar Ground Sites
1200EPIRBEmergency Position Indicating Radio Beacon
1201EPLEnglish Premier League
1202EPOSElectronic Point Of Sale
1203EPPAEmployee Polygraph Protection Act
1204EPREuropean Pressurised [Nuclear] Reactor
1205EQEmotional Quotient
1206ErErbium
1207ERCIMEuropean Research Consortium for Informatics and Mathematics
1208ERIEritrea (ISO 3166 trigram)
1209ERLAWSEastern Ruapehu Lahar Alarm and Warning System
1210EROSEarth Resources Observation System
1211ERPEngineer Regulating Point
1212ERREesti Rahvusringhääling
1213ERSEarth Resources Survey
1214ERTSEarth Resources Technology Satellite (became Landsat)
1215ERVEndogenous RetroVirus
1216ESDElectroStatic Discharge
1217ESDPEuropean Security and Defence Policy
1218ESEEast South-East
1219ESHWestern Sahara (ISO 3166 trigram)
1220ESLEnglish as a Second Language
1221ESMElectronic warfare Support Measures
1222ESOEuropean Southern Observatory
1223ESOLEnglish for Speakers of Other Languages
1224ESPNEntertainment and Sports Programming Network
1225ESUEmergency Services Unit
1226ESVEngineer Support Vehicle
1227ETEthiopia (ISO 3166 digram; FIPS 10-4 country code)
1228ETHEthiopia (ISO 3166 trigram)
1229ETIExtra-Terrestrial Intelligence
1230ETLAExtended TLA
1231ETTEmbedded Training Team
1232EuEuropium
1233EUCOM(U.S.) European Command
1234EUUSAEuropean Union and United States of America
1235EVExavolt
1236EVILElectronic viewfinder (with) interchangeable lens (a type of digital camera)
1237EWTNEternal Word Television Network
1238ExateslaExtra Terrestrial
1239EXREPExpeditious Repair (SM&R code)
1240fFemto
1241fAFemtoampere
1242FAFood Addicts in Recovery Anonymous
1243FAAFinancial Aid Administrator,Fleet Air Arm,Functional Area Analysis
1244FAADForward Area Air Defence
1245FAADEZForward Area Air Defence Engagement Zone
1246FAAFPFellow of the American Academy of Family Physicians
1247FAANFellow of the American Academy of Neurology
1248FAANFellow of the American Academy of Nursing
1249FAAQFrequently Asked and Anticipated Questions
1250FAASVField Artillery Ammunition Supply Vehicle
1251FABFeline Advisory Bureau (UK feline charity)
1252FACA(US) Federal Advisory Committee Act
1253FACHFuerza Aérea de Chile
1254FACNFellow of the American College of Nutrition
1255FACPFellow of the American College of Physicians
1256FACTSFlexible Alternating Current Transmission System
1257FAMForeign Affairs Manual
1258FAOFood and Agriculture Organization
1259FAPAFellow of the American Psychological Association
1260FAPHAFellow of the American Public Health Association
1261FARPForward Arming and Refuelling Point / Forward Area Rearm/refuel Point
1262FASCAMFamily of Scatterable Mines[1]
1263FASDFetal Alcohol Spectrum Disorder
1264FASEBFederation of American Societies for Experimental Biology
1265FATField Artillery Tractor
1266FAVSFuture Armoured Vehicle System
1267FAWFootball Association of Wales
1268FBCSFellow of the British Computer Society
1269FBIDSTFellow of the British Institute of Dental and Surgical Technologists
1270FBISForeign Broadcast Information Service
1271FBMBoard foot
1272fCFemtocoulomb
1273FCCU.S. Federal Communications Commission
1274FCEFirst Certificate in English
1275FCFFinancial Free Cash Flow
1276FCLAFraud Claims Law Associate
1277FCOUK Foreign and Commonwealth Office
1278FCWFlorida Championship Wrestling
1279FDFalun Dafa
1280FDAFood and Drug Administration (U.S.)
1281FDBK(I) Feedback
1282FeIron (Latin Ferrum)
1283FEASTForum for European-Australian Science and Technology Cooperation
1284FEATSFestival of European Anglophone Theatrical Societies link title
1285FEBAForward Edge of the Battle Area
1286FEDField Emission Display
1287FEDEPFederation Development Process (Simulation)
1288FEFFrontal Eye Field (neurophysiology)
1289FEMAFarm Equipment Manufacturers Association, U.S. Federal Emergency Management Agency,Fire Equipment Manufacturers' Association
1290FENSFederation of European Neuroscience Societies
1291FESFlywheel Energy Storage
1292FESTFrankfurt English Speaking Theatre link title
1293FETField-effect transistor
1294FEZFighter Engagement Zone
1295fFFemtofarad
1296FFFinal Fantasy
1297FFBFrum From Birth (referring to an observant Jew born into a religiously observant family)
1298FFCFree For Chat
1299FFEFukuoka Futures Exchange
1300FFFFédération française de football (French for: French Football Federation)
1301FFGGuided Missile Frigate (hull classification symbol)
1302FFOVForward Field Of View
1303FFRFédération française de rugby (French for: French Rugby (Union) Federation)
1304FFSFor Fuck's Sake
1305FFTFinal Fantasy Tactics
1306FGFalun Gong
1307fgFemtogram
1308FGFog (METAR Code), French Guiana (FIPS 10-4 territory code)
1309FGOTUSFirst Gentleman of the United States
1310FGRFlickr Group Roulette
1311fHFemtohenry
1312FHFIFFoster's Home for Imaginary Friends
1313FHIFamily Health International, Fuji Heavy Industries,Ltd.
1314FIFinland (ISO 3166 digram; FIPS 10-4 country code)
1315FIATFabbrica Italiana Automobili Torino (Italian for: Italian Car Factory of Turin)
1316FIBFucking Illinois Bastard (Wisconsin slang, variants exist)
1317FIBUAFighting In Built-Up Areas
1318FICFellowship for Intentional Community
1319FIDForeign Internal Defence
1320FIEFly-In Echelon
1321FIFAFédération internationale de football association (French for: International Association Football Federation)
1322FIFeFédération internationale féline (French for: International Feline Federation)
1323FIFOFirst In, First Out
1324FIFRAFederal Insecticide, Fungicide, and Rodenticide Act
1325FIGJAMFuck I'm Good, Just Ask Me
1326FIMPTFellow of the Institute of Maxillofacial Prosthetists and Technologists
1327FINFinland (ISO 3166 trigram)
1328FINAFédération internationale de natation (French for: International Swimming Federation)
1329FIRESFever Induced Refractory Epilepsy Syndrome or Febrile Infection-Related Epilepsy Syndrome
1330FISFédération internationale de ski (French for: International Ski Federation)
1331FISAFédération Internationale des Sociétés d'Aviron (French for: International Federation of Rowing Associations)
1332FISHFluorescence In-Situ Hybridisation
1333FiSTFire Support Team
1334FITSFlexible Image Transport System
1335FIUFlorida International University
1336fJFemtojoule
1337FJFiji (ISO 3166 digram; FIPS 10-4 country code)
1338FJIFiji (ISO 3166 trigram)
1339FJNFinancial Job Network
1340FKFalkland Islands (ISO 3166 digram; FIPS 10-4 territory code)
1341fKFemtokelvin
1342FKSMFort Knox Supplemental Manual
1343FKTFastest Known Time
1344fLFemtolitre
1345FLFlorida (postal symbol)
1346flfloruit (Latin for: living) (genealogy)
1347FLAFlorida,Front Line Assembly,Future Large Aircraft
1348FLABFour-letter abbreviation
1349FLACFree Legal Advice Centres
1350FLACFree Lossless Audio Codec
1351FLAKFlug-Abwehr-Kanone (German for: Anti-Aircraft Guns)
1352FLBForward Logistics Base
1353FLETForward Line of Enemy Troops
1354FLGFalun Gong
1355FLIPFlight Information Publication
1356FLIRForward Looking InfraRed (sensor)
1357FLKFalkland Islands (ISO 3166 trigram)
1358FLOTForward Line of Own Troops
1359FLOTUSFirst Lady of the United States (the wife of the President of the United States)
1360FLQFree Legal Questions
1361FLQFront de libération du Québec (French for: Québec Liberation Front)
1362FLSAFair Labor Standards Act
1363FLTSATFleet Satellite
1364FLTSATCOMFleet Satellite Communication System
1365FLUBOSFat, Lazy, Useless, Bag Of Shit
1366FMFactory Mutual
1367FMFederal Magistrate (Australian post-nominal),Federated States of Micronesia (postal symbol; ISO 3166 digram; FIPS 10-4 territory code),Field Manual,Flight Manager,Frequency Modulation (electronics)
1368fmFemtometre
1369FmFermium
1370FMCFederal Magistrates' Court (an Australian federal court,formerly FMS),Food Machinery Corporation (original name of the company now known as FMC Corporation)
1371FMCAFederal Magistrates' Court of Australia (used for citing decisions of the FMC other than family law decisions)
1372FMCAfamFederal Magistrates' Court of Australia: family (used for citing family law decisions of the FMC)
1373FMCGFast Moving Consumer Goods
1374FMEFormal Methods Europe
1375FMECAFailure Modes and Effect Criticality Analysis
1376FMJDFédération Mondiale du Jeu de Dames
1377FMLAFamily Medical Leave Act
1378FoEFriends of the Earth
1379FOGCFederal Oil and Gas Council
1380FOHFront Of House
1381FOIAFreedom of Information Act
1382FOMFederation Object Model
1383FONSIFinding of No Significant Impact
1384FOOForward Observation Officer
1385FOOPFriends Of Organ Pipes (Volunteer group)
1386FoSFamily of Systems
1387FOSEFallout 3 Script Extender
1388FOSEFederal Office Systems Expo
1389FOTFree on truck
1390FOTAFellow of the Orthodontic Technicians Association
1391FOTCFlight of the Conchords
1392FOUOFor Official Use Only
1393FPFrench Polynesia (FIPS 10-4 territory code)
1394FPFFederação Portuguesa de Futebol (Portuguese for: Portuguese Football Federation), Final Protective Fire
1395FPSFire Prevention System
1396FQBaker Island (FIPS 10-4 territory code),French Southern and Antarctic Territories (ISO 3166 digram; obsolete 1979)
1397FRFrance (FIPS 10-4 country code; ISO 3166 digram)
1398FrFrancium
1399FRAFederal Railroad Administration, France (ISO 3166 trigram)
1400FRANDFair,reasonable,and non-discriminatory (concept in standards-setting and intellectual property law)
1401FRCPFederal Rules of Civil Procedure,Fellow of the Royal College of Physicians
1402FRICBMFull Range ICBM
1403FROFaroe Islands (ISO 3166 trigram)
1404FRSFellow of the Royal Society, U.S. Federal Reserve System
1405FRSAFellow of the Royal Society of Art
1406FRYFederal Republic of Yugoslavia
1407fsFemtosecond
1408fSFemtosiemens
1409FSAFire Support Area, UK Food Standards Agency, Functional Solution Analysis
1410FSCFederal Supply Classification, Forest Stewardship Council (ecological pressure group)
1411FSCLFire Support Co-ordination Line
1412FSEFire Support Element
1413FSFFree Software Foundation
1414FSHFollicle Stimulating Hormone
1415FSIFuel Stratified Injection
1416FSSFire Support Station
1417FSSPFamilies of Structurally Similar Proteins
1418FSTCForeign Science Technology Center (now NGIC)
1419fTFemtotesla
1420FTCFederal Trade Commission
1421FTEFull Time Equivalent
1422FTLFaster Than Light
1423FTSFlight Termination System used during some rocket launches
1424FTSFuck That Shit
1425FUSmoke (METAR Code)
1426FUBARFucked/Fouled Up Beyond All Recognition/Repair
1427fVFemtovolt
1428fWFemtowatt
1429FWForward
1430FWCFootball World Cup
1431FWFFixed Word Format
1432FWIFrench West Indies
1433FWIWFor What It's Worth
1434FWSU.S. Fish and Wildlife Service
1435FWTFresh Water Tank
1436FXXMetropolitan France (ISO 3166 trigram; obsolete 1997)
1437FYAFor Your Agenda
1438FYDPFive-Year Defense Plan (U.S.)
1439FYIFor Your Information
1440FYROMFormer Yugoslav Republic of Macedonia
1441FZDZFreezing Drizzle (METAR Code)
1442FZFGFreezing Fog (METAR Code)
1443FZRAFreezing Rain (METAR Code)
1444gGram
1445G3Heckler & Koch G3
1446GAARGeneral Anti-Avoidance Rule (tax evasion)
1447GABGabon (ISO 3166 trigram)
1448GABAGamma-AminoButyric Acid
1449GADGeneralized Anxiety Disorder
1450GAFGarfield and Friends
1451GAOU.S. Government Accountability Office
1452GAWGlobal Atmospheric Watch
1453GBBCGreat (Global) Backyard Bird Count
1454GBEKnight/Dame Grand Cross of the Order of the British Empire
1455GBRUnited Kingdom of Great Britain and Northern Ireland (ISO 3166 trigram)
1456GCAGraduate in Claims Administration
1457GCDsee entry
1458GCFGreatest Common Factor
1459GCIGround-controlled interception
1460GCNGamma-ray burst Coordination Network
1461GCSGlobal Coordinate System
1462GCSEGeneral Certificate of Secondary Education (UK)
1463GdGadolinium
1464GDGrenada (ISO 3166 digram)
1465GDLGame Definition Language
1466GDRGeneral Distribution Release (Microsoft Term for a software service release; between Hotfix and Service Pack)
1467GDRGerman Democratic Republic (cf. DDR)
1468GDWGame Designers Workshop
1469GeGermanium
1470GEBCOGeneral Bathymetric Chart of the Oceans
1471GECGreat Engineering Challenge
1472GEDGeneral Educational Development (high school equivalency credential in the U.S. and Canada)
1473GEEPGeophysical Equipment Exploration Platform
1474GENFull General (four stars) in the U.S. Army
1475GeVGigaelectron-volt
1476GEVGround Effect Vehicle
1477GFCIGround Fault Circuit Interruptor (aka GFI)
1478GFIGround Fault Interruptor (aka GFCI)
1479GFLGerman Football League (Germany's Bundesliga for American football; the English-language name is used in German without translation)
1480GFNGlobal Footprint Network
1481GGGeorgia (FIPS 10-4 country code)
1482GGKGood God Karma
1483GHAGhana (ISO 3166 trigram)
1484GHBgamma-Hydroxybutyric acid
1485GiGibi
1486GIBGibraltar (ISO 3166 trigram)
1487GIGGlobal Information Grid
1488GINOGodzilla In Name Only
1489GISSGeneral Impression of Size and Shape,Goddard Institute for Space Studies
1490GJDGeocentric Julian Day
1491GLAADGay and Lesbian Alliance Against Defamation
1492GLACGeneral Ledger Accounting Code
1493GLASTGamma-ray Large Area Space Telescope
1494GLBAGramm-Leach-Bliley Act
1495GLCGas-liquid chromatography
1496GLPGuadeloupe (ISO 3166 trigram)
1497GLVGained Life Value
1498GmGigametre
1499GMThe Gambia (ISO 3166 digram),GameMaster (role-playing),General Motors,Genetically Modified,Germany (FIPS 10-4 country code),Guru Meditation (computing)
1500GMACGeneral Motors Acceptance Corporation,the original name of the company now known as Ally Financial,Graduate Management Admission Council,G-MAC,Great Midwest Athletic Conference
1501GMBThe Gambia (ISO 3166 trigram),General,Municipal,Boilermakers (and Allied Trade Union)
1502GMFSCGround Mobile Forces Satellite Communications
1503GMOGenetically Modified Organism
1504GMPCSGlobal Mobile Personal Communications by Satellite
1505GNASGrand National Archery Society
1506GNBGuinea-Bissau (ISO 3166 trigram)
1507GNPGross National Product
1508GNQEquatorial Guinea (ISO 3166 trigram)
1509GnRHGonadotropin-Releasing Hormone
1510GOGlorioso Islands (FIPS 10-4 territory code)
1511GOAGeneral of the Army (United States only)
1512GOATGreatest Of All Time
1513GOCGeneral Officer Commanding
1514GOESGeostationary Operational Environmental Satellite
1515GOPGrand Old Party
1516gorpgranola,oats,raisins,peanuts (another name for trail mix),probably a backronym
1517GOSCGeneral Officer Steering Committee
1518GOSHGreat Ormond Street Hospital
1519GOSPGas/Oil Separation Plant
1520GOTSGovernment off-the-shelf
1521GOYADINGet Off Your Arse,Do It Now (anti-procrastination mantra)
1522GPGeneral Practitioner,General Purpose,Grand Prix,Guadeloupe (ISO 3166 digram; FIPS 10-4 territory code)
1523GPAGrade Point Average
1524GPCGlobal Path Cache
1525GPIBGeneral-Purpose Instrumentation/Interface Bus
1526GPOGeneral Post Office
1527GPPCGenetics and Public Policy Center
1528GPRGround-Penetrating Radar
1529GPSGeneral Problem Solver,Global Positioning System
1530GPTGeneral Purpose Technology, Get paid to surf (an online business model)
1531GQEquatorial Guinea (ISO 3166 digram),Gentlemen's Quarterly (the original name of the magazine now known simply as GQ),Guam (FIPS 10-4 territory code),GR[edit]
1532GRGreece (FIPS 10-4 country code; ISO 3166 digram),Hail (METAR Code)
1533GRAILGravity Recovery and Interior Laboratory
1534GRASGenerally recognized as safe (FDA list)
1535GRBGamma-Ray Burst
1536GRCGreece (ISO 3166 trigram)
1537GRDGrenada (ISO 3166 trigram)
1538GREGraduate Record Examination,Greece (IOC and FIFA trigram,but not ISO 3166)
1539grep[search] Globally for Regular Expression,Print [lines]
1540GRIDGay-Related Immune Deficiency (original name of AIDS)
1541GRidGlobal Release Identifier,a music industry identifier from the RIAA and IFPI
1542GriTGirl raised in Texas (Woman presenting firm southern traits/beliefs)
1543GRLGreenland (ISO 3166 trigram)
1544GRNGrenada (IOC and FIFA trigram,but not ISO 3166),Goods Received Note
1545GsGigasecond
1546GSAU.S. General Services Administration
1547GSDGraphical Situation Display
1548GSGB(God send glamour boy 9-10/10)
1549GSKGlaxoSmithKline [good sexual karma]
1550GSNGame Show Network
1551GSOGeneral Services Officer (U.S. Department of State)
1552GSOHGood Sense Of Humour
1553GSPGeorges St-Pierre (Canadian MMA fighter)
1554GSRGun Shot Residue
1555GSSGeneric Security Services
1556GSWGunshot wound
1557GTDGetting Things Done
1558GTGGot To Go (Internet chat)
1559GTGNGetty Thesaurus of Geographic Names
1560GTKGood To Know (Internet chat)
1561GTMGuatemala (ISO 3166 trigram)
1562GUGuam (postal symbol; ISO 3166 digram)
1563GUFFrench Guiana (ISO 3166 trigram)
1564GUILTGangliated Utrophin Immuno Latency Toxin
1565GULCRGrupo de Usuarios de Linux de Costa Rica
1566GUTGrand Unification Theory
1567GWARSGround Warfare System (simulation)
1568GWASGrand Western Archery Society
1569GWOTGlobal War on Terrorism
1570GXEGene-enivronment interaction
1571GXMMatrox Graphics eXpansion Module
1572GYGuyana (FIPS 10-4 country code; ISO 3166 digram)
1573GZKGreisen-Zatsepin-Kuzmin cut-off (cosmic ray energies)
1574hHecto
1575HAARPHigh Frequency Active Auroral Research Program
1576HAARTHighly Active Anti-Retroviral Therapy
1577HAIHuman Awareness Institute
1578HALHardware Abstraction Layer
1579HALOHigh Altitude Low Opening (parachute jump)
1580HAMAmateur radio operator
1581HANSHead And Neck Support (device used in many race cars)
1582HARMHigh-speed Anti-Radiation Missile
1583HAWHeavy Antitank Weapon
1584HAWKHoming All the Way Killer (air defence system)
1585HAZHeat-Affected Zone
1586HAZMATHazardous Materials
1587HBCDHexaBromoCycloDodecane
1588HBOHome Box Office
1589HBRHarvard Business Review
1590HBTHeterojunction Bipolar Transistor
1591HBVHepatitis B Virus
1592HCCIHomogeneous Charge Compression Ignition
1593HCFHighest Common Factor
1594HCSCHigher Command and Staff Course
1595HDLHigh-Density Lipoprotein
1596HDMHuman Decision-Making
1597HDRAHenry Doubleday Research Association
1598HeHelium
1599HEHigh Explosive
1600HEATHigh Explosive Anti-Tank (ammunition)
1601HEBAHellenic Basketball Clubs Association
1602HEERHigh-Explosive Extended Range (ammunition)
1603HEICHonourable East India Company
1604HEMPHigh-Altitude Electromagnetic Pulse
1605HEOSSHigh Earth Orbit Space Surveillance
1606HEPHigh-Explosive Plastic (ammunition)
1607HEPAHigh-Efficiency Particulate Air (filter)
1608HESVHeavy Engineering Support Vehicle
1609HETTHeavy Equipment Transporting Truck / Heavy Equipment Truck Tractor
1610HEUHighly Enriched Uranium
1611HfHafnium
1612HFHigh Frequency
1613HFEHuman Fertilisation and Embryology (UK Act)
1614HFEThe common-emitter current gain in a BJT transistor (also represented by βF). See: BJT
1615HFEAHuman Fertilisation and Embryology Authority (UK)
1616HgMercury (Latin Hydrargyrum)
1617HGCUK Human Genetics Commission
1618HGFHuman Growth Factor
1619HGTVHome & Garden Television
1620HIHawaii (postal symbol)
1621HIHHis (or Her) Imperial Highness
1622HIMHis (or Her) Imperial Majesty
1623HIMADHigh to Medium Altitude Air Defence (see also H/MAD)
1624HIMEZHigh Altitude Missile Engagement Zone
1625HIMYMHow I Met Your Mother
1626HIPAAU.S. Health Insurance Portability and Accountability Act
1627HipparcosHIgh Precision Parallax COllecting Satellite
1628HirdHurd of interfaces representing depth (cf. HURD)
1629HiRISEHigh Resolution Imaging Science Experiment
1630HITHealth Information Technology
1631HIVHuman Immunodeficiency Virus
1632HIWTHobart Institute of Welding Technology
1633HJDHeliocentric Julian Day
1634HKHong Kong (ISO 3166 digram; FIPS 10-4 territory code)
1635HKGHong Kong (ISO 3166 trigram)
1636HKSHyperKinetic Syndrome
1637hLHectolitre
1638HLHolding Line
1639HLLHigh-Level Language
1640HLNHeadline News
1641HLOSHigh Level Output Specification
1642HMHeard Island and McDonald Islands (ISO 3166 digram; FIPS 10-4 territory code)
1643HMCEHer/His Majesty's Customs and Excise (former UK government department; succeeded by HM Revenue and Customs)
1644HMDHeard and McDonald Islands (ISO 3166 trigram)
1645HMFHydroxyMethyl Furfural
1646HMOHealth maintenance organization
1647HMPHer Majesty's Prison
1648HMRCHer/His Majesty's Revenue and Customs
1649HMSOHer Majesty's Stationery Office
1650HMVHis Master's Voice
1651HNHonduras (ISO 3166 digram)
1652HNDHonduras (ISO 3166 trigram)
1653HoHolmium
1654HOHonduras (FIPS 10-4 country code)
1655HOLLANDHope Our Love Lasts And Never Dies
1656HOSTACHelicopter Operations from Ships Other Than Aircraft Carriers
1657HOTHighly Optimised Tolerance
1658HOTASHands on throttle-and-stick
1659HOVHigh Occupancy Vehicle
1660hphorse power
1661HPAUK Health Protection Agency
1662HPCLHindustan Petroleum Corporation Limited
1663HPLCHigh Performance Liquid Chromatography
1664HPTHigh[er] Payoff Target
1665HPVHuman Papilloma Virus
1666HRBLHigh-level Representation of Behavior Language (original name of the Herbal language)
1667HRDHuman Resource Development
1668HRFHigh iness Forces
1669HRHHis (or Her) Royal Highness
1670HRMHis (or Her) Royal Majesty
1671HRMHuman Resource Management
1672HRTHormone Replacement Therapy
1673HsHassium
1674HSBCThe Hong Kong and Shanghai Banking Corporation
1675HSCHigher School Certificate
1676HSMHigh School Musical
1677HSMADHuman Science/Modeling and Analysis Data
1678HSNHome Shopping Network
1679HSPHHarvard School of Public Health
1680HSSIHigh-Speed Serial Interface
1681HSTsee entry
1682HTAHyperText Application
1683HTFUHarden The Fuck Up
1684HTHHope That Helps
1685HTIHaiti (ISO 3166 trigram)
1686HTMLHyperText Markup Language
1687HTRHeated Towel Rail
1688HTSHigh-Temperature Superconducting wire
1689HTTPHyperText Transfer Protocol
1690HUHungary (ISO 3166 digram; FIPS 10-4 country code)
1691HUHAHead up his/her ass (Marine salute; probably a backcronym)
1692HUNHungary (ISO 3166 trigram)
1693HURDHird of Unix-Replacing Daemons (cf. Hird)
1694HVUpper Volta (ISO 3166 digram; obsolete 1984)
1695HVAPHigh Velocity Armour Piercing (ammunition)
1696HVHFHigh velocity human factors
1697HVMHigh Velocity Missile
1698HVOUpper Volta (ISO 3166 trigram; obsolete 1984)
1699HWMHardware morphing (computer graphics rendering)
1700HXBThe glycoprotein Tenascian C
1701HZHaze (METAR Code)
1702HzHertz
1703IAIowa (postal symbol)
1704IAALI Am A Lawyer
1705IABInternational Association for Biologicals
1706IADIon Assisted Deposition
1707IADSIntegrated Air Defence System
1708IAEAInternational Atomic Energy Agency
1709IAF{i} Industrial Areas Foundation
1710IAFGInformation Assurance Focus Group
1711IANAInternet Assigned Numbers Authority
1712IANALI Am Not A Lawyer
1713IASImage Assessment System
1714IASIPIt's Always Sunny in Philadelphia
1715IATAInternational Air Transport Association
1716IATFInternational Automotive Task Force
1717IATSEInternational Alliance of Theatrical Stage Employees
1718IAUCInternational Astronomical Union Circular
1719IAWIn Accordance With
1720IBInternational Baccalaureate
1721IBAImportant Bird Area
1722IBDInflammatory Bowel Disease
1723IBDMInformation Based Decision Making
1724IBMInternational Business Machines
1725IBRDInternational Bank for Reconstruction and Development (part of the World Bank)
1726IBSIrritable Bowel Syndrome
1727ICANNInternet Corporation for Assigned Names and Numbers
1728ICAOInternational Civil Aviation Organization
1729ICBMIntercontinental Ballistic Missile
1730ICBNInternational Code of Botanical Nomenclature
1731ICEIn case of emergency
1732ICESInternational Council for the Exploration of the Sea
1733ICFIntelligent Community Forum
1734ICMPInternet Control Message Protocol
1735ICNAFInternational Commission for the Northwest Atlantic Fisheries (became NAFO in 1978)
1736ICOIntermediate Circular Orbit
1737ICPEInternational Conference on Pharmacoepidemiology,the annual conference of the International Society for Pharmacoepidemiology
1738ICRAFInternational Centre for Research in Agroforestry (a.k.a. World Agroforestry Centre since 2002)
1739ICRISATInternational Crops Research Institute for the Semi-Arid Tropics
1740ICRLIndividual Component Repair List
1741ICRSInternational Celestial Reference System
1742ICSIIntracytoplasmic Sperm Injection
1743ICTInformation and communication technologies
1744ICTHIsland Closest to Heaven/Hell Final Fantasy VIII
1745ICVInfantry Carrier Vehicle
1746ICYMIIn Case You Missed It
1747IDCInternational Data Corporation
1748IDDII don't do initialisms (see irony)
1749IDGAFI don't give a fuck
1750IDKI don't know
1751IDLInterface Definition Language
1752IDNIndonesia (ISO 3166 trigram)
1753IEAInternational Energy Agency
1754IECInternational Electrotechnical Commission
1755IEDImprovised Explosive Device
1756IELTSInternational English Language Testing System
1757IERInformation Exchange Requirement
1758IETInitial Entry Training
1759IETInstitution of Engineering and Technology
1760IETFInternet Engineering Task Force
1761IEWIntelligence and Electronic Warfare
1762IFABInternational Football Association Board
1763IFAHInternational Federation for Animal Health
1764IFAPInternational Federation of Agricultural Producers
1765IFOIdentified Flying Object (see also UFO)
1766IFOVInstantaneous Field of View
1767IFPIInternational Federation of Phonographic Industries
1768IFRBInternational Frequency Registration Board
1769IFVInfantry Fighting Vehicle
1770IGInspector General
1771IGNOUIndira Gandhi National Open University
1772IGSInternational Ground Station
1773IHHIdiopathic Hypogonadotropic Hypogonadism
1774IHOInternational Hydrographic Organization
1775IHRInstitute for Historical Review
1776IHSIInstitutum Historicum Societatis Iesu (Jesuit Historical Institute)
1777IITwo (in Roman numerals)
1778IICAInter-American Institute for Cooperation on Agriculture
1779IIEInnovative Interstellar Explorer
1780IIIThree (in Roman numerals)
1781IIRCIf I Recall/Remember Correctly
1782IISSInternational Institute for Strategic Studies
1783IJNImperial Japanese Navy (World War II)
1784IJWPInterim Joint Warfare Publication
1785ILDSImproved Landmine Detection System
1786ILOInternational Labour Organization
1787ILRIInternational Livestock Research Institute
1788ILYI Love You [pronounced ILL-LEE]
1789IMBDInternational Migratory Bird Day
1790IMDbInternet Movie Database
1791IMEIn My Experience
1792IMHOIn My Humble/Honest Opinion
1793IMLInternational Mister Leather
1794IMNSHOIn My Not So Humble Opinion
1795IMPACInternational Merchant Purchase Authorization Card
1796IMPACTInternational Medical Products Anti-Counterfeiting Taskforce
1797IMPATTIMPact Avalanche Transit Time diode
1798IMPTInstitute of Maxillofacial Prosthetists and Technologists
1799IMRLIndividual Material iness List
1800IMRO-Internal Macedonian Revolutionary OrganizationIrish Music Rights Organisation
1801IMsLInternational Ms. Leather
1802IMTIntegrated Management Tool
1803IMUInternational Mathematical Union
1804InIndium
1805INAImmigration and Nationality Act
1806INASInternational Near-Earth Asteroid Survey
1807INCITSInterNational Committee for Information Technology Standards
1808INDIndia (ISO 3166 trigram)
1809INDIGO(U.S.) INtelligence DIvision Gaming Operation
1810inetthe Internet
1811INFORMS(U.S.) Institute for Operations Research and the Management Sciences
1812INFOSECInformation Security
1813INLAIrish National Liberation Army
1814INMARSATInternational Maritime Satellite organization
1815INRIAInstitut national de recherche en informatique et en automatique
1816INSImmigration and Naturalization Service
1817InSARInterferometric synthetic aperture radar
1818INSTInformation Standards and Technology
1819INTERFETInternational Force for East Timor
1820INTSUMIntelligence Summary
1821IOBritish Indian Ocean Territory (ISO 3166 digram; FIPS 10-4 territory code)
1822IOTBritish Indian Ocean Territory (ISO 3166 trigram)
1823IPBIntelligence Preparation of the Battlefield
1824IPLInferior Parietal Lobule
1825IPOInitial Public Offering
1826IPTIntegrated Product/Project Team
1827IPTSInstitute for Prospective Technological Studies
1828IPTVInternet Protocol TeleVision
1829IPWInterrogation of Prisoners of War
1830IrIridium
1831IRADInternal Research and Development
1832IRAN(I) Inspect and Repair As Necessary
1833IRASInfrared Astronomical Satellite
1834IRBInternational Rugby Board
1835IRBMIntermediate Range Ballistic Missile
1836IREAIntermountain Rural Electric Association
1837IRINNIslamic Republic of Iran News Network
1838IRLIreland (ISO 3166 trigram),Industrial Research Limited,Indy Racing League,In real life
1839IRNIran (ISO 3166 trigram)
1840IROInternational Refugee Organisation
1841IRQIraq (ISO 3166 trigram)
1842IRSU.S. Internal Revenue Service
1843IRSTInfra-red Search and Track
1844ISAAAInternational Service for the Acquisition of Agri-biotech Applications
1845ISARInverse SAR (Synthetic Aperture Radar)
1846ISBIntermediate Staging Base
1847ISBNInternational Standard Book Number (ISO 2108)
1848ISCCPInternational Satellite Cloud Climatology Project
1849ISCIIIndian Standard Code for Information Interchange
1850ISDNIntegrated Services Digital Network
1851ISEFIntel International Science and Engineering Fair
1852ISENInternet Search Environment Number
1853ISFInternal Security Force
1854ISILIslamic State of Iraq and the Levant
1855ISISInstitute for Science and International Security, or: Islamic State of Iraq and Syria
1856ISLIceland (ISO 3166 trigram)
1857ISLNInternational Standard Lawyer Number (used initially by LexisNexis Martindale-Hubbell)
1858ISMBInternational Society of Matrix Biologists
1859ISMCIntelligent Sounding Meaningless Conversation
1860ISOGPIndian Society of Orthodontics for General Practitioners [2]
1861ISPEInternational Society for Pharmacoepidemiology
1862ISROIndian Space Research Organisation
1863ISSCRInternational Society for Stem Cell Research
1864ISSNInternational standard serial number (ISO 3297)
1865ISTCInstitute of Scientific and Technical Communications (UK)
1866ISTSIntel Science Talent Search
1867ITAItaly (ISO 3166 trigram)
1868ITAGInertial Terrain-Aided Guidance
1869ITALYI'll Truly Always Love You
1870ITASImproved Target Acquisition Sight
1871ITCInferoTemporal Cortex (neurophysiology)
1872ITCZIntertropical Convergence Zone
1873ITECInformation Technology Exposition & Conference
1874ITEMSInteractive Tactical Environment Management System
1875ITERInternational Thermonuclear Experimental Reactor
1876ITFInternational Tennis Federation
1877ITKIn The Know
1878ITNIndependent Television News (British)
1879ITTInternational Telephone and Telegraph (U.S.)
1880ITTOInternational Tropical Timber Organization
1881IUCNInternational Union for the Conservation of Nature and Natural Resources (World Conservation Union)
1882IvecoIndustrial Vehicles Corporation
1883IVFIn Vitro Fertilisation
1884IVIInterchangeable Virtual Instrument
1885IVISInter-Vehicle Information System
1886IVLInter-Visibility Line
1887IVMIn Vitro [Oocyte] Maturation
1888IVOIn Vicinity Of
1889IWInformation Warfare
1890IWARSInfantry Warrior Simulation
1891IWCInternational Whaling Commission
1892IWWIndustrial Workers of the World
1893IXNine (in Roman numerals)
1894IXTIntraText digital library; IntraText lexical hypertext
1895IYSaudi-Iraqi neutral zone (FIPS 10-4 territory code; obsolete 1993)
1896IZIraq (FIPS 10-4 country code)
1897JJoule
1898J1Joint [Manpower &] Personnel Directorate
1899J2Joint Intelligence Directorate
1900J3Joint Operations Directorate
1901J4Joint Logistics Directorate
1902J5Joint Strategic Plans & Policy Directorate
1903J7Joint Operational Plans & Interoperability Directorate
1904JAJapan (FIPS 10-4 country code)
1905JAFTJust A Field Test
1906JALJapan Airlines
1907JALLCJoint Analysis and Lessons Learned Centre (NATO)
1908JAMJamaica (ISO 3166 trigram)
1909JAMAJournal of the American Medical Association
1910JANETJoint Academic Network
1911JATOJet-Assisted Take-Off
1912JBJail Bait
1913JBJunior Branch
1914JBFSAJoint Blue Force Situational Awareness
1915JCDBJoint Common Data Base
1916JCDSJoint Chiefs of the Defence Staff
1917JCIDSJoint Capabilities Integration and Development System
1918JCLJob Control Language
1919JCPJava Community Process
1920JCSJoint Chiefs of Staff
1921JCWJuggalo Championship Wrestling
1922JDBCJava Data Base Connectivity
1923JDEMJoint Dark Energy Mission
1924JDLJewish Defense League
1925JEJersey (FIPS 10-4 territory code)
1926JEFXJoint Expeditionary Force eXperiment
1927JETJoint European Torus
1928JEZJoint Engagement Zone
1929JFACCJoint Force Air Component Commander
1930JFACTSUU.S. Joint Forward Air Control Training and Standards Unit
1931JFCJoint Force Commander
1932JFKJohn Fitzgerald Kennedy or the airport named after him.
1933JFLCCJoint Force Land Component Commander
1934JFMCCJoint Force Maritime Component Commander
1935JFOJournal of Field Ornithology
1936JFSOCCJoint Force Special Operations Component Commander
1937JFTXJoint Field Training Exercise
1938JHJapan Highway Public Corporation
1939JHJharkhand (Indian state code)
1940JIJoint Implementation
1941JIBJoint Information Bureau
1942JICJoint Intelligence Centre
1943JINIJava Intelligent Network Infrastructure
1944JITCJoint Interoperability Test Command
1945JIVEJoint Institute for VLBI (Very Long Baseline Interferometry) in Europe
1946JJAPJapanese Journal of Applied Physics
1947JLJapan Airlines (IATA airline designator)
1948JLAJustice League of America
1949JMJamaica (FIPS 10-4 country code; ISO 3166 digram)
1950JMSJava Message Service
1951JNJan Mayen Island (FIPS 10-4 territory code)
1952JNIJava Native Interface
1953JNLPJava Network Launch Protocol
1954JOJordan (FIPS 10-4 country code; ISO 3166 digram)
1955JOAJoint Operations Area
1956JOPESJoint Operations Planning and Execution System
1957JORJordan (ISO 3166 trigram)
1958JOTSJoint Operations Tactical System
1959JPLJet Propulsion Laboratory
1960JPNJapan (ISO 3166 trigram)
1961JPOWJoint Project Optic Windmill
1962JRDFJoint Rapid Deployment Forces
1963JREJava Runtime Environment
1964JREFJames Randi Educational Foundation
1965JROCJoint Requirements Oversight Council
1966JROCMJROC Memorandum
1967JRRFJoint Rapid Reaction Force
1968JRSAIJournal of the Royal Society of Antiquaries of Ireland
1969JSAPJapan Society of Applied Physics
1970JSCSCJoint Services Command and Staff College
1971JSEADJoint Suppression of Enemy Air Defence (see SEAD)
1972JSFJoint Strike Fighter
1973JSIMSJoint Simulation System
1974JSOAJoint Special Operations Area
1975JSOTFJoint Special Operations Task Force
1976JSPJavaServer Page
1977JSPJoint Services Publication
1978JSRJava Specification Request
1979JSSJoint Support Ship Project
1980JTCJoint Training Confederation
1981JTFJoint Task Force
1982JTFEXJoint Task Force Exercise
1983JTLSJoint Theater Level Simulation
1984JTMDJoint Theatre Missile Defence
1985JTNJohnston Atoll (ISO 3166 trigram; obsolete 1986)
1986JUJuan de Nova Island (FIPS 10-4 territory code)
1987JUGFETJUnction Gate Field-Effect Transistor
1988JUICEJUpiter ICy Moon Explorer
1989JUOJoint Urban Operations
1990JVJoint Venture,Junior Varsity
1991JWJehovah's Witnesses
1992JWARSJoint Warfare System (simulation)
1993JWPJoint Warfare Publication
1994JYJapanese Yen
1995JZJoint Zone
1996KKelvin,Potassium (Latin Kalium),Tanker (aircraft designation code)
1997kKilo-
1998Kpicokelvin
1999K9Canine Police Unit
2000KaKamov Design Bureau
2001kAKiloampere
2002KAKnowledge Acquisition,Karnataka (Indian state code)
2003KAFKandahar Air Field
2004KANUKOKAKalaallit Nunaanni Kommunit Kattuffiannit (Kalaallisut, Greenlandic Communities Association
2005KARNACKnowledge Aided Retrieval in Activity Context
2006KARRKnight Automated Roving Robot (Knight Rider character)
2007KATUSAKorean Augmentation To United States Army
2008KAZKazakhstan (ISO 3166 trigram)
2009KBEKnight Commander of the Order of the British Empire
2010KBOKuiper Belt Object
2011KBVBKoninklijke Belgische Voetbalbond (Dutch for Royal Belgian Football Association)
2012kCKilocoulomb
2013KCKKansas City,Kansas,Koma Civakên Kurdistan (Kurdish, Union of Communities in Kurdistan)
2014KCLKing's College London
2015KCMOKansas City,Missouri (pronounced: K-C-Moe)
2016KCSKansas City Southern Railway (AAR reporting mark)
2017KDKawasaki Disease,Kraft Dinner
2018KEKenya (FIPS 10-4 country code; ISO 3166 digram),Kinetic Energy,Knowledge Engineering
2019KEDOKorean Peninsula Energy Development Organization
2020KENKenya (ISO 3166 trigram)
2021KERAKentucky Education Reform Act (of 1990)
2022kermaKinetic Energy Released in MAterial / in MAtter / per unit MAss
2023KESRKent and East Sussex Railway.
2024KETKentucky Educational Television,Key English Test
2025kFKilofarad
2026KFCKentucky Fried Chicken
2027KFORUN Kosovo Force
2028KFUPMKing Fahd University of Petroleum & Minerals
2029KGKyrgyzstan (FIPS 10-4 country code; ISO 3166 digram)
2030KGOKnight of the Guelphic Order of Hanover
2031KGZKyrgyzstan (ISO 3166 trigram)
2032KHCambodia (ISO 3166 digram)
2033kHKilohenry
2034KHLKontinental Hockey League
2035KHMCambodia (ISO 3166 trigram)
2036KHzKilohertz
2037KiKibi
2038KIKiribati (ISO 3166 digram)
2039KIAKilled In Action
2040KIDSKnowledge-based Integrated Design System
2041KIRKiribati (ISO 3166 trigram)
2042KISSKeep It Simple,Stupid / Keep It Short and Simple,Korean Intelligence Support System
2043KITKeep In Touch
2044KITECHKorean Institute of Industrial Technology
2045KITTKnight Industries Two Thousand, Knight Industries Three Thousand
2046kJKilojoule
2047kKKilokelvin
2048KKKKu Klux Klan
2049kLKilolitre
2050KLENOTKLEť Observatory Near Earth and Other unusual objects observations Team and Telescope
2051KLOCKilo Lines Of Code
2052KMComoros,Knowledge Management
2053kNKilonewton
2054KNASaint Kitts and Nevis (ISO 3166 trigram)
2055KNVBKoninklijke Nederlandse Voetbal Bond (Dutch for Royal Dutch Football Association)
2056KOKnocked Out
2057KORRepublic of Korea (ISO 3166 trigram)
2058KPKim Possible
2059KPMGKlynveld,Peat,Marwick,Goerdeler
2060KPNOKitt Peak National Observatory
2061KQKenya Airways (IATA airline designator), Kingman Reef (FIPS 10-4 territory code)
2062KRKiribati (FIPS 10-4 country code), Republic of Korea (ISO 3166 digram)
2063KrKrypton
2064KSKansas (postal symbol), Republic of Korea (FIPS 10-4 country code)
2065kSKilosiemens
2066KSCKennedy Space Center
2067KSIKilled or Seriously Injured
2068KSUKansas State University
2069KTChristmas Island (FIPS 10-4 territory code), Knight of the Order of the Thistle, Knights Templar
2070kTKilotesla
2071KTSKnight of the Tower and Sword (of Portugal)
2072KUKuwait (FIPS 10-4 country code)
2073KUWKuwait (UNDP country code,IOC and FIFA trigram,but not ISO 3166)
2074kVKilovolt
2075KVKosovo
2076kWKilowatt
2077KWKuwait (ISO 3166 digram)
2078KWBKids' WB!
2079KWTKuwait (ISO 3166 trigram)
2080KXCayman Airways (IATA airline designator)
2081KYCayman Islands (ISO 3166 digram), Kentucky (postal symbol)
2082KZKazakhstan (FIPS 10-4 country code; ISO 3166 digram)
2083KZNKwaZulu-Natal
2084LaLanthanum
2085LALaos (FIPS 10-4 country code; ISO 3166 digram), Louisiana (postal symbol), Los Angeles
2086LAASLocal Area Augmentation System, Los Angeles Astronomical Society
2087LABLogistics Assault Base
2088LabVIEWLaboratory Virtual Instrumentation Engineering Workbench
2089LACMALos Angeles County Museum of Art
2090LADLaser Aiming Device
2091LADWLocal Air Defence Warning
2092LAESILocal Authority & Emergency Service Information
2093LANLocal Area Network
2094LANLLos Alamos National Laboratory
2095LAOLaos (ISO 3166 trigram)
2096LARLight Armoured Reconnaissance, Logistics Assistance Representative
2097LARCLivermore Advanced Research Computer (cf. LLNL)
2098LARPLive-Action Role-Playing
2099LaserLight Amplification by Stimulated Emission of Radiation (cf. Maser)
2100LATLowest Astronomical Tide (nautical charts),Licensed Athletic Trainer (used in many of the United States; see www.oata.org)
2101LATALocal Access Transport Area
2102LATCHLower Anchors and Tethers for Children (U.S. standard for attachment points for child safety seats in passenger cars)
2103LAVLand Assault Vehicle, Light Armoured Vehicle, Lymphadenopathy-Associated Virus
2104LAWLight Antitank Weapon
2105LAXLos Angeles International Airport, The Latin American Xchange (professional wrestling)
2106LBLebanon (ISO 3166 digram)
2107LBHLight Battlefield Helicopter, Lyman-Birge-Hopfield bands
2108LBJLady Bird Johnson,LeBron James,Light Bulb Joke,Little Beagle Johnson (the dog owned by Lyndon and Lady Bird Johnson),Lyndon Baines Johnson
2109LBNLebanon (ISO 3166 trigram)
2110LBNLLawrence Berkeley National Laboratory
2111LBRLiberia (ISO 3166 trigram)
2112LBSLocation-Based Services
2113LBTLarge Binocular Telescope
2114LBWLeg Before Wicket
2115LBYLibya (ISO 3166 trigram)
2116LCASaint Lucia (ISO 3166 trigram)
2117LCCLand Component Commander
2118LCCPLight Contingency Communications Package
2119LCDLiquid Crystal Display
2120LCMLeast/Lowest Common Multiple
2121LCSLeague of Legends Championship Series
2122LDALateral Drift Apparatus (paratroops)
2123LDCLesser Developing/Developed Country
2124LDLLow-Density Lipoprotein
2125LDVLocal Defence Volunteers (British Home Guard)
2126LDWLane Departure Warning (ADAS)
2127LELebanon (FIPS 10-4 country code)
2128LECLocal Exchange Carrier
2129LEDLight-Emitting Diode
2130LEGADLegal Advice
2131Legslevel emotion gad speed
2132LEMOSSLong-Endurance MObile Submarine Simulator
2133LENLarge Extension Node
2134LEPLarge Electron-Positron collider
2135LERLoss-Exchange Ratio
2136LEULow-Enriched Uranium
2137LFLow Frequency
2138LFOLow Frequency Oscillation / Oscillator
2139LFTRLiquid fluoride thorium reactor
2140LGLatvia (FIPS 10-4 country code)
2141LGMLittle Green Men
2142LGSLandsat Ground Station
2143LHCLarge Hadron Collider
2144LHSLeft Hand Side
2145LiLithium
2146LIBORLondon Interbank Offered Rate
2147LIBSLaser Induced Breakdown Spectroscopy
2148LIELiechtenstein (ISO 3166 trigram)
2149LIGOLaser Interferometer Gravitational-Wave Observatory
2150LINEARLincoln Near-Earth Asteroid Research
2151LISALaser Interferometer Space Antenna
2152LIVELiquid Inertial Vibration Eliminator
2153LJJLord Justices of Appeal
2154LKSri Lanka (ISO 3166 digram)
2155LKASri Lanka (ISO 3166 trigram)
2156LKR4Linkwitz-Riley 4th order (audio crossover type)
2157LLADLow Level Air Defence
2158LLBLegum Baccalaureus (Latin: Bachelor of Laws)
2159LLCLimited Liability Company
2160LLLTVLow-Light Level Television
2161LLNLLawrence Livermore National Laboratory
2162LLPLimited Liability Partnership
2163LLTRLow-Level Transit Route
2164LMAOLaughing My Ass Off (Internet shorthand)
2165LMBLick My Balls
2166LMFAOLaughing My F**king Ass Off (Internet shorthand,electro-hop duo)
2167LMNLifetime Movie Network
2168LMSLike My Status (Internet shorthand)
2169LMV() Light Motor Vehicle
2170LNERLondon and North Eastern Railway
2171LNGLiquefied Natural Gas
2172LNOLiaison Officer
2173LOSlovakia (FIPS 10-4 country code)
2174LOALimit Of Advance
2175LOCLevel of Operational Capability,Limited Operational Capability,Lines Of Code,Lines Of Communication,see entry
2176LoDLines of Development (UK)
2177LOFARLow Frequency Analysis and Recording
2178LOGPACLogistics Package
2179LOLLaughing Out Loud (Internet shorthand)
2180LOMEZLow Altitude Missile Engagement Zone
2181LONEOSLowell Observatory Near-Earth-Object Search
2182LORTIDLOng Range Target IDentification
2183LOSLine Of Sight
2184LOSATLine-Of-Sight Anti-Tank (missile)
2185LOTALicentiate of the Orthodontic Technicians Association
2186LOTISLivermore Optical Transient Imaging System
2187LOTSLogistics Over-The-Shore
2188LPCLinear Predictive Coding
2189LPGLiquefied Petroleum Gas (cf. LNG)
2190LPILow Probability of Intercept
2191LQPalmyra Atoll (FIPS 10-4 territory code)
2192LrLawrencium
2193LRLiberia (ISO 3166 digram)
2194LRCLogistics iness Center
2195LRGWLong-Range Guided Weapon
2196LRICBMLimited Range ICBM
2197LRIPLow Rate Initial Production
2198LRPLogistics Release Point
2199LRPELong-Range Planning Element
2200LRSLong Range Surveillance
2201LRULine-Replaceable Unit
2202LSILarge-Scale Integration
2203LSIFLabour Sponsored Investment Fund
2204LSNDLiquid Scintillator Neutrino Detector
2205LSOLesotho (ISO 3166 trigram)
2206LSSTLarge Synoptic Survey Telescope
2207LtLieutenant
2208LtCLieutenant-Colonel (U.S.)
2209LTCLong-Term Costing
2210LtdLimited
2211LTDPLong-Term Defence Plan
2212LTILinear Time-Invariant
2213LTMAcronym for Laughing To Myself
2214LTPLong-Term Potentiation
2215LTULithuania (ISO 3166 trigram)
2216LUAcronym Love You
2217LULoonatics Unleashed
2218LuLutetium
2219LUCALast Universal Common Ancestor
2220LUGLinux User Group
2221LULULocally Unwanted Land Use (urbanism)
2222LUXLuxembourg (ISO 3166 trigram)
2223LVALatvia (ISO 3166 trigram)
2224LVEFLeft Ventricular Ejection Fraction
2225LwLawrencium (obsolete 1963)
2226LWRLaser warning receiver
2227LWRCLand Warfare Resources Corporation
2228LWSLand Warrior System
2229LXElectrics (theatrical term)
2230LYAOLaugh Your Ass Off
2231LYLASLove You Like A Sister
2232MaMegaannum
2233mAMilliampere
2234MAAMathematical Association of America
2235MAACMetro Atlantic Athletic Conference
2236MACEMulti-Agent Computing Environment
2237MACHOMAssive Compact Halo Object
2238MAFMaintenance Action Form
2239MAGICMajor Atmospheric Gamma-ray Imaging Cherenkov (telescope)
2240MAGNETARMetaprogrammable AGent NETwork ARchitecture
2241MAGTFMarine Air-Ground Task Force
2242MALDMiniature Air-Launched Decoy
2243MANPADSMAN-Portable Air Defence System
2244MANPRINTMANpower and PeRsonnel INTegration
2245MAOMolėtų astronomijos observatorija (Moletai Astronomical Observatory),MonoAmine Oxidase
2246MAOIMonoamine oxidase inhibitor
2247MAPSMonitoring Avian Productivity and Survivorship
2248MARMorocco (ISO 3166 trigram)
2249MarBEFMarine Biodiversity and Ecosystem Functioning
2250MARCENTUnited States Marine Forces Central Command
2251MARFORCCMarine Force Component Commander
2252MASASMonte Agliale Supernovae and Asteroid Survey
2253MaserMicrowave Amplification by Stimulated Emission of Radiation
2254MASHMobile Army Surgical Hospital
2255MASINTMeasurement And Signature Intelligence
2256MAVSMobile Artillery Vehicle System
2257MBBL(U.S. Armor Center) Mounted Battlespace Battle Laboratory
2258MBCCMigratory Bird Conservation Commission (U.S.)
2259MBCSMulti-Byte Character Set
2260MBIMoody Bible Institute
2261MBIDSTMember of the British Institute of Dental and Surgical Technologists
2262MBMMeat and Bone Meal
2263MBTMain Battle Tank
2264MBTIMyers-Briggs Type Indicator
2265mCMillicoulomb
2266MCDLModel Composition Definition Language
2267MCFTModified Compression Field Theory
2268MCGMelbourne Cricket Ground
2269MCISMellon Collie and the Infinite Sadness
2270MCMMine Counter-Measures
2271MCMVMine Counter-Measure Vessel
2272MCRMy Chemical Romance
2273MCSFMarine Corps Security Forces
2274MCTMovement Control Team
2275MCTISMounted Co-operative Target Identification System
2276MdMendelevium
2277MDNAMadonna's 12th studio album title (2012)
2278MDOMembership Driven Organisation
2279MDPMarkov Decision Process
2280MDTMountain Daylight Time (UTC-6 hours)
2281MDVMaldives (ISO 3166 trigram)
2282MeMesserschmitt
2283MEACMid-Eastern Athletic Conference (ME-ac)
2284MECOMain engine cutoff (NASA code for point in Space Shuttle assent when three main engines are shut down prior to External Tank (ET) separation)
2285MEDEVACMedical evacuation
2286MEDSMission Essential Data Set
2287MEGMagnetoEncephaloGraphy
2288MELTMetallic Line/Loop Test (ing)
2289MEMSMicroelectromechanical System
2290MERMars Exploration Rover
2291MERLMitsubishi Electric Research Laboratories
2292MESManufacturing Execution Systems
2293METAR[Meteorological] Aviation Routine weather report
2294METOCMeteorological and Oceanographic
2295MeVMegaelectronvolt
2296MEXMexico (ISO 3166 trigram)
2297MEZMissile Engagement Zone
2298mFMillifarad
2299MGPAMMy Gym Partner's a Monkey
2300MGSMobile Gun System
2301mHMillihenry
2302MHCMajor Histocompatibility Complex
2303MHHWMean Higher High Water (nautical charts)
2304MHLMarshall Islands (ISO 3166 trigram)
2305MHLWMean Higher Low Water (nautical charts)
2306MHRA(UK) Medicines and Healthcare products Regulatory Agency
2307MHWMean High Water (nautical charts)
2308MHWNMean High Water Neaps (nautical charts)
2309MHWSMean High Water Springs (nautical charts)
2310MHzMegahertz
2311MiMebi
2312MIAMissing In Action
2313MICLICMine Clearing Line Charge
2314MICOMMissile Command
2315MIDMidway Islands (ISO 3166 trigram; obsolete 1986)
2316MIDASMan-machine Integration Design and Analysis System
2317MIDIMusical Instrument Digital Interface
2318MIDSMulti-Function Information Distribution System
2319MIFGShallow Fog (METAR Code)
2320MIKEMonitoring of Illegal Killing of Elephants
2321MILMan-In-the-Loop
2322MILCMirrorless interchangeable-lens camera
2323MILFMother I'd Like to Fuck
2324MIMOSAMIcroMeasurements Of Satellite Acceleration
2325MIMPTMember of the Institute of Maxillofacial Prosthetists and Technologists
2326MIRAMILAN Infra-Red Acquisition (thermal sight)
2327MIRVMultiple Independent Reentry Vehicle
2328MISREPMission Report
2329MISSIMultilevel Information System Security Initiative
2330MITLMan-In-The-Loop
2331MITSsee entry
2332mJMillijoule
2333MJDModified Julian Day
2334mKMillikelvin
2335MKGMichael Kidd-Gilchrist (American basketball player)
2336MKSAMetre-Kilogram-Second-Ampere (system of units)
2337mLMillilitre
2338MLBMajor League Baseball
2339MLCMember of the Legislative Council (in India)
2340MLEMaximum likelihood estimation
2341MLHWMean Lower High Water (nautical charts)
2342MLIMali (ISO 3166 trigram)
2343MLLMajor League Lacrosse
2344MLLWMean Lower Low Water (nautical charts)
2345MLPMy Little Pony
2346MLRSMultiple-Launch Rocket System
2347MLTMalta (ISO 3166 trigram)
2348MLWMean Low Water (nautical charts)
2349MLWNMean Low Water Neaps (nautical charts)
2350MLWSMean Low Water Springs (nautical charts)
2351MmMegametre
2352mmMillimetre
2353MMEVMulti-Mission Effects Vehicle
2354MMIMagical MonkeyZ Inc.
2355MMIMan-Machine Interface
2356MMIMcLean Meditation Institute
2357MMICMcLean Meditation Institute Certified
2358MMOMassively Multiplayer Online (computer game)
2359MMORMaster of Management in Operations Research
2360MMORPGMassively multiplayer online role-playing game
2361MMPRMighty Morphin Power Rangers
2362MMSMultimission Modular Spacecraft
2363MnManganese
2364mNMillinewton
2365MNBMultinational Brigade
2366MNEMontenegro (ISO 3166 trigram)
2367MNMFMulti-National Maritime Force
2368MNPNorthern Mariana Islands (ISO 3166 trigram)
2369MNSMission Needs Statement
2370MoMolybdenum
2371MOAMuseum of Art (Brigham Young University)
2372MOCASMechanization Of Contract Administration Services
2373MoDMinistry of Defence (United Kingdom) and various other countries
2374modemModulator-Demodulator
2375MoeMarvel of entertainment
2376MOEMeasure Of Effectiveness
2377MOFMinistry of Finance (Japan)
2378MOFAMinistry of Foreign Affairs (Japan)
2379MOIDMinimum Orbital Intersection Distance
2380MOJWAMovement for Oneness and Jihad in West Africa
2381MOLOMobile Other Licensed Operator (UK)
2382MOMMaster's Degree in Oriental medicine
2383MOMMessage Oriented Middleware
2384MoMMultiple of the median
2385MoMAMuseum of Modern Art (NYC)
2386MONDModified Newtonian Dynamics
2387MOOMeasure Of Outcome
2388MOPPMission-Oriented Protective Posture
2389MORPMeteorite Observation and Recovery Project
2390MOSFETMetal-Oxide-Semiconductor Field-Effect Transistor
2391MOTMinistry of Transport (UK)
2392MOTAMember of the Orthodontic Technicians Association
2393MOTESSMoving Object and Transient Event Search System
2394MOUMemorandum Of Understanding
2395MOWMaintenance of way (also MW)
2396MOZMozambique (ISO 3166 trigram)
2397MPaMegapascal
2398mPaMillipascal
2399MPAAMotion Picture Association of America
2400MPECMinor Planet Electronic Circular
2401MPEGMotion Pictures (Coding) Experts Group
2402MPEVMulti-Purpose Engineering Vehicle
2403MPFMaritime Prepositioning Force
2404MPFCMedial PreFrontal Cortex
2405MPGMiles Per Gallon
2406MPMCMedial PreMotor Cortex
2407MPSIMember of the Pharmaceutical Society of Ireland
2408MPSoCMultiProcessor System-on-Chip
2409MPSRONMaritime Propositioning Ship Squadron
2410MRMauritania (FIPS 10-4 country code; ISO 3166 digram)
2411MRAVMulti-Role Armoured Vehicle
2412MRBMMedium Range Ballistic Missile
2413MRCMaintenance Requirements Card
2414MRDMotorized Rifle Division
2415MRGWMedium-Range Guided Weapon
2416MRIMagnetic Resonance Imaging
2417MRLMultiple Rocket Launcher
2418MRPharmSMember of the Royal Pharmaceutical Society (Great Britain)
2419MRSMagnetic Resonance Spectroscopy
2420MRSAMethicillin-resistant Staphylococcus aureus
2421MRTFBU.S. Major Range and Test Facility Base
2422MsMegasecond
2423mSMillisiemens
2424MSDMinimum Safe Distance
2425MSDBMulti Source Data Base
2426MSEMultiple Subscriber Element
2427MSGMessage
2428MSLPMean Sea Level Pressure
2429MSNBCMicrosoft National Broadcasting Company Cable news channel (see also msnbc.com)
2430MSOMultiple System Operator
2431MSPBMerit Systems Protection Board
2432MSSAMethicillin-susceptible Staphylococcus aureus
2433MtMeitnerium
2434mTMillitesla
2435MTBFMean time between failures
2436MtFMale-to-female transsexual
2437MTGMagic: The Gathering
2438MTQMartinique (ISO 3166 trigram)
2439MTTMethylthiazol tetrazolium (assay)
2440MTWSMAGTF Tactical Warfare System
2441MUSMauritius (ISO 3166 trigram)
2442mVMillivolt
2443MVCMissouri Valley Conference
2444MVFCMissouri Valley Football Conference
2445MVNOMobile virtual network operator
2446mWMilliwatt
2447MWESHMachismo Wizards Extended SHelter (operating system)
2448MWIMalawi (ISO 3166 trigram)
2449MWOAMount Wilson Observatory Association
2450MWTBMounted Warfare Test Bed
2451MYMalaysia (FIPS 10-4 country code; ISO 3166 digram)
2452MYOBMind Your Own Business
2453MYSMalaysia (ISO 3166 trigram)
2454MYTMayotte (ISO 3166 trigram)
2455nNano
2456N3FNational Fantasy Fan Federation
2457nANanoampere
2458NaSodium (Latin Natrium)
2459NAAN-Acetylaspartate
2460NAADNorth American Air Defense
2461NAAQSNational Ambient Air Quality Standards
2462NAAWSNATO Anti-Air Warfare System
2463NACNational Agency Check,U.S. Naval Avionics Center,U.S. Navy Advanced Concepts,North Atlantic Council,Northern Area Command
2464NACCNorth Atlantic Cooperation Council
2465NACISANATO Communications and Information Systems Agency
2466NACMANATO Air Command and Control System Management Agency
2467NACRANorth America Caribbean Rugby Association (more specifically rugby union)
2468NAECU.S. Naval Air Engineering Center
2469NAFERANative American Free Exercise of Religion Act
2470NAFLDNonAlcoholic Fatty Liver Disease
2471NAFONorthwest Atlantic Fisheries Organization
2472NAFTANorth American Free Trade Agreement
2473NAGPRANative American Graves Protection and Repatriation Act
2474NAICSNorth American Industry Classification System
2475NAILNeurotics Anonymous
2476NAILSNational Airspace Integrated Logistics System
2477NAIRUNon Accelerating Inflation Rate of Unemployment
2478NAKNegative Acknowledge
2479NAMNamibia (ISO 3166 trigram)
2480NAMBLANorth American Man-Boy Love Association
2481NAMRLNaval Aerospace Medical Research Laboratory
2482NaNNot A Number (computing)
2483NAOUK National Audit Office
2484NAPSNavy Acquisition Procedures Supplement
2485NARA(U.S.) National Archives and Records Administration
2486NARALNational Abortion Rights Action League
2487NARDACNaval Regional Data Automation Center
2488NARDICU.S. Navy Acquisition Research and Development Information Center
2489NARPVNational Association for Remotely Piloted Vehicles
2490NASCARNational Association for Stock Car Auto Racing
2491NASDAQNational Association of Securities Dealers Automated Quotations
2492NASEDNational Association of State Election Directors [1][2]
2493NASHNon-Alcoholic Steatohepatitis
2494NASPNational Aerospace Plane
2495NASSNational Association of Secretaries of State [3]
2496NatGeoNational Geographic
2497NaUKMANational University of Kyiv-Mohyla Academy
2498NAVNavigation[al]
2499NAVCAMSNaval Communications Area Master Station
2500NAVCCNational Audio-Visual Conservation Center
2501NAVCENTNaval Forces U.S. Central Command
2502NAVDACNaval Data Automation Command
2503NAVEURNaval Forces U.S. European Command
2504NAVFORNaval Force
2505NAVMACSNaval Modular Automatic Communication Subsystem
2506NAVNETNavy Network
2507NAVSNon-Cooperative Airborne Vector Scoring
2508NAVSATNavigation Satellite
2509NAVSPACECOMU.S. Navy Space Command
2510NAVSPASURU.S. Naval Space Surveillance System
2511NAVSTARNavigation Satellite Timing And Ranging
2512NAVTACNETNavy Tactical Network
2513NAWCU.S. Naval Air Warfare Center
2514NbNiobium
2515NBANational Basketball Association
2516NBLNational Basketball League (Australia)
2517NBTNitroblue tetrazolium (assay)
2518nCNanocoulomb
2519NCANational Command Authority
2520NCARU.S. National Center for Atmospheric Research
2521NCBNational Codification Bureau
2522NCCAMU.S. National Center for Complementary and Alternative Medicine
2523NCCUSLNational Conference of Commissioners on Uniform State Laws (U.S.)
2524NCDDRU.S. National Center for the Dissemination of Disability Research
2525NCIU.S. National Cancer Institute
2526NCLNew Caledonia (ISO 3166 trigram)
2527NCLRNational Council of La Raza
2528NCMONo Commitment Make Out
2529NCONon-Commissioned Officer
2530NCPNet Contracted Purchases
2531NCRNational Cash Register Co.
2532NCTRNon-Co-operative Target Recognition
2533NCWNetwork Centric Warfare
2534NdNeodymium
2535NDAAU.S. National Defense Authorization Act
2536NDBPNon-Departmental Public Body (Scotland)
2537NDPNew Democratic Party (Canada)
2538NDSNintendo DS
2539NeNeon
2540NECTECNational Electronics and Computer Technology Center (Thailand)
2541NEMSNational Energy Modeling System (USDOE-EIA)
2542NEPANational Environmental Policy Act
2543NERNiger (ISO 3166 trigram)
2544NERICANew Rice for Africa
2545NESPNSA/CSS Enterprise Standards Program
2546NETNational Educational Television
2547NETCU(UK) National Extremism Tactical Co-ordination Unit
2548NETL(US) National Energy Technology Laboratory
2549NETWARSNetwork Warfare Simulation
2550NEXNavy EXchange
2551nFNanofarad
2552NFNorfolk Island (ISO 3166 digram)
2553NFERNational Foundation for Educational Research
2554NFGNo Fucking Good
2555NFHSNational Federation of State High School Associations
2556NFINot F****** Interested
2557NFKNorfolk Island (ISO 3166 trigram)
2558NfldNewfoundland
2559NFPANational Fluid Power Association (United States)
2560NFTNo Further Text
2561NGATSNew Generation Army Targetry System
2562NGHNorthern General Hospital
2563NGOnon-governmental organization
2564NGSNaval Gunfire Support
2565nHNanohenry
2566NHANESNational Health and Nutrition Examination Survey
2567NHBNew Hebrides (ISO 3166 trigram; obsolete 1980)
2568NHBNo Holds Barred radio (Link)
2569NHLNational Hockey League
2570NHRANational Hot Rod Association
2571NHSNational Health Service (UK)
2572NiNickel
2573NIAAAU.S. National Institute on Alcohol Abuse and Alcoholism
2574NIAGNATO Industrial Advisory Group
2575NIAIDNational Institute of Allergies and Infectious Disease
2576NIAMDNational Institute of Arthritis and Musculoskeletal Diseases
2577NIBNew In Box (Internet auction/trading listings)
2578NIBPNon-invasive blood pressure monitor
2579NicANicotine Anonymous
2580NICAPNational Investigations Committee on Aerial Phenomena
2581NICEUK. National Institute for Health and Clinical Excellence
2582NICHDNational Institute of Child Health and Human Development [4]
2583NICPNational Inventory Control Point
2584NIDDKNational Institute of Diabetes and Digestive and Kidney Diseases
2585NIDRRNational Institute on Disability Research and Rehabilitation
2586NIEHSNational Institute of Environmental Health Sciences
2587NIINNational Item Identification Number
2588NIMANational Imagery and Mapping Agency (became NGA)
2589NIMBYNot In My Back Yard (See NOME)
2590NIMGNot In My Generation
2591NINNine Inch Nails (band)
2592NIPRNational Institute of Polar Research (Japan)
2593NIRNorthern Ireland (FIFA trigram; not eligible for an ISO 3166 or IOC trigram)
2594NISACU.S. National Infrastructure Simulation and Analysis Center
2595NISCAPNSA Information System Certification and Accreditation Program
2596NISERNational Institute of Science Education and Research
2597NISTNational Institute of Standards and Technology
2598NITFSNational Imagery Transmission Format Standard
2599NIUNiue (ISO 3166 trigram)
2600nJNanojoule
2601NJNew Jersey (postal symbol)
2602NJHSNational Junior Honor Society
2603NJPWNew Japan Pro Wrestling
2604nKNanokelvin
2605NKANo Known Allergies
2606nLNanolitre
2607NLBNon-Linear Battlefield
2608NLDNetherlands (ISO 3166 trigram)
2609NLFNational Liberation Front (disambiguation)
2610NLLNational Lacrosse League
2611NLWNon-Lethal Weapon
2612nmNanometre
2613NMNew Mexico (postal symbol)
2614NMCINavy Marine Corps Intranet
2615NMCSNot Mission Capable Supply (SM&R code)
2616NMDU.S. National Missile Defense
2617NMNNo middle name
2618NMRNuclear Magnetic Resonance
2619NMSGNATO Modelling and Simulation Group
2620nNNanonewton
2621NNENorth North-East
2622NNSAU.S. National Nuclear Security Administration
2623NNWNorth North-West
2624NoNobelium
2625NOAAU.S. National Oceanic and Atmospheric Administration
2626NOAFNorwegian Air Force
2627NOAONational Optical Astronomy Observatory
2628NOCUK. National Oceanography Centre
2629NODEFNATO Oceanographic Data Exchange Format
2630NOGINew Orleans Grande Isle (award for diving)
2631NOLFNavy OutLying Field
2632NOMENot on Mars Either
2633NOMENot on Mars Either (see NIMBY)
2634NORNorway (ISO 3166 trigram)
2635NORELPREFNo religious preference
2636NORTHAGNorthern Army Group
2637NOSANATO OSI Security Architecture
2638NOTAFLOFNo One Turned Away For Lack Of Funds
2639NOWNational Organization for Women
2640NPNepal (ISO 3166 and FIPS 10-4 country code digram)
2641NPBNippon Professional Baseball
2642NPCSNon-Passenger Coaching stock (in Railways)
2643NPDNationaldemokratische Partei Deutschlands (German)
2644NPDINew Product Development and Introduction
2645NPGNeedline/Network Participation Group
2646NPHNormal Pressure Hydrocephalus
2647NPOnothing by mouth
2648NPOVNeutral Point Of View
2649NQDronning Maud Land (ISO 3166 digram; obsolete 1983)
2650NRNauru (ISO 3166 and FIPS 10-4 country code digram)
2651NRANational Rifle Association
2652NRAONational Radio Astronomy Observatory
2653NRDC(U.S.) Natural Resources Defense Council
2654NRELU.S. National Renewable Energy Laboratory
2655NRKNorsk Rikskringkasting (Norwegian Broadcasting Corporation)
2656NRMPNational Resident Matching Program (U.S. medicine)
2657NROU.S. National Reconnaissance Office
2658NRTNear Real Time
2659NRUNauru (ISO 3166 trigram)
2660nsNanosecond
2661nSNanosiemens
2662NSABBNational Science Advisory Board for Biosecurity
2663NSAIDNon-Steroidal Anti-Inflammatory Drug
2664NSBNorges Statsbaner (Norwegian State Railways)
2665NSCNational Security Council
2666NSDLNational Science Digital Library (US)
2667NSGNational System for Geospatial-Intelligence
2668NSNNational Stock Number
2669NSNANational Student Nurses' Association
2670NSONational Standardization Office (ABCA)
2671NSS(U.S.) Naval Simulation System
2672NST(UK) Nimrod Software Team
2673NSTACNational Security Telecommunications Advisory Committee
2674NSWNew South Wales (postal symbol)
2675nTNanotesla
2676NTDSNaval Tactical Data System
2677NTPNetwork Time Protocol
2678NTRNetwork Time Reference
2679NTRANational Thoroughbred Racing Association
2680NTSBNational Transportation Safety Board
2681NTVNon-Tactical Vehicle
2682NTY(Internet Abbreviations:) Not Tested Yet; (Alternatively) No Thank You
2683NTZIraq-Saudi Arabia Neutral Zone (ISO 3166 trigram; obsolete 1993)
2684NUTSNuclear Utilization Target Selection
2685NUWCU.S. Naval Undersea Warfare Center
2686nVNanovolt
2687NVEOLNight Vision and Electro-Optics Laboratory
2688NVGNight Vision Goggles
2689NVLNight Vision Laboratory
2690nWNanowatt
2691NWNorth-West
2692NWNuclear Weapon
2693NWANational Wrestling Alliance
2694NWFNational Wildlife Federation
2695NWFZNuclear-Weapon-Free Zone
2696NWHNU.S. National Women's Health Network
2697nWoNew World Order (see article for explanation of idiosyncratic capitalization)
2698NWOAHMNew Wave of American Heavy Metal
2699NWOBHMNew Wave of British Heavy Metal (sometimes pronounced /n.ˈwɒbm/ as if it were an acronym)
2700NWRANational Wildlife Rehabilitators Association
2701NWSLNational Women's Soccer League (U.S.)
2702NWTNorth-West Territories
2703NXA21st arcade game in the Pump It Up series
2704NXDNative XML
2705NXENew Xbox Experience
2706NXGNew Cross Gate station
2707NXLNational XBall League
2708NXNNike Cross Nationals
2709NYNew York (postal symbol)
2710NYCNew York City
2711NYHANew York Heart Association
2712NYONational Youth Orchestra of Great Britain
2713NYSENew York Stock Exchange
2714NZNew Zealand (ISO 3166 and FIPS 10-4 country code digram)
2715NZCNew Zealand Cricket
2716NZLNew Zealand (ISO 3166 trigram)
2717NzLNoze looan (online/event listings)
2718NZOSSNew Zealand Open Source Society
2719NZRUNew Zealand Rugby Union
2720OACOn Approved Credit
2721OAPOld Age Pensioner (UK)
2722OARSIOsteoarthritis Research Society International
2723OASOrganization of American States
2724OASISOntario Agencies Supporting Individuals with Special Needs
2725OASISOntario Association of Sewage Industry Services
2726OASPOperational Analysis Support Paper/Plan
2727OAUOrganization for African Unity
2728OBEOfficer of the Order of the British Empire
2729OBXOuter Banks (North Carolina)
2730OCOfficer Commanding
2731OCDObsessive-Compulsive Disorder
2732OCFSOracle Cluster File System
2733OCFS2Oracle Cluster File System Release 2
2734OCMCC[2] Orchard County MCC
2735OCNOncology Certified Nurse
2736OCOOort Cloud Object
2737OCROptical Character Recognition
2738OCSsee entry
2739ODASOCA-DLR Asteroid Survey
2740ODBCOpen DataBase Connectivity
2741OEA(U.S.) Office of Economic Adjustment
2742OECDOrganisation for Economic Co-operation and Development (international)
2743OEDOxford English Dictionary
2744OEGOperation Exposure Guidance
2745OEISOn-Line Encyclopedia of Integer Sequences
2746OEMOriginal Equipment Manufacturer
2747OFAOccipital Face Area
2748OFDAU.S Agency for International Development's Office of Foreign Disaster Assistance
2749OGCOpen Geospatial Consortium
2750OGDOther Government Department
2751OGOOther Government Organization
2752OHOhio (postal symbol)
2753OHCOverHead-Cam engine
2754OHHLAOriginal Hip-Hop Lyrics Archive
2755OHIPOntario Health Insurance Plan
2756OHMSOn Her (or His) Majesty's Service (also written: O.H.M.S.)
2757OHPObservatoire de Haute-Provence
2758OHSSOvarian Hyperstimulation Syndrome
2759OICOfficer In Charge
2760OIFOperation Iraqi Freedom
2761OIOCOriental & India Office Collections (in the British Library)
2762OJTOn-the-Job Training
2763OKCOklahoma City
2764OLEDOrganic Light-Emitting Diode
2765OLSOperational Linescan System
2766OMDOrchestral Manoeuvres in the Dark (1980s pop group)
2767OMEOsaka Mercantile Exchange
2768OMFGOh My Fucking God
2769OMGOh My God or Or My Gosh
2770OMGWOh My Gosh it's Windy
2771OMNOman (ISO 3166 trigram)
2772OMNCSU.S. Office of the Manager for the National Communications System
2773OMPOrder of Mapungubwe in Platinum
2774OMSOrder of Mapungubwe in Silver
2775OMTObject Model Template
2776ONOntario (postal symbol)
2777ONCOrthopaedic Nurse Certified
2778ONGOrthodontic National Group
2779ONI(U.S.) Office of Naval Intelligence
2780ONSOperational Needs Statement
2781OOADObject Oriented Analysis and Design
2782OOBEOut-of-body experience
2783OOCLOrient Overseas Container Line
2784OODAObservation,Orientation,Decision,Action loop (a.k.a. Boyd's Loop)
2785OOFOut of Facility
2786OOMFOne Of My Followers
2787OOOOut Of the Office
2788OOTWOperations Other Than War
2789OPObservation Point/Post,Ocean Pacific (surfwear and swimwear brand),Original Poster (internet),Order Point,in inventory management; the inventory state at which more items should be ordered. Often expressed as a part of OP/OQ (when quantity OP is reached,order OQ new items),Overpowered,often used to refer to fictional characters (e.g. Superman) or game mechanics (e.g. the Black Lotus in Magic: the Gathering) that are considered disproportionately strong
2790OPACOnline Public Access Catalogue
2791OPCONOperational control
2792OPCWOrganisation for the Prohibition of Chemical Weapons
2793OPECOrganization of the Petroleum Exporting Countries
2794OPFOROpposing force
2795OPINTELOperational Intelligence
2796OPLANOperation plan (also OpPlan)
2797OPORDOperation order
2798OPSECOperations security,Open Platform for Security
2799OPSIOverwhelming post splenectomy infection,UK Office of Public Sector Information
2800OPTAROperational target
2801OPVOffshore Patrol Vessel
2802OQOrder Quantity,in inventory management; the quantity of new items to be ordered. Often expressed as a part of OP/OQ (when quantity OP is reached,order OQ new items)
2803OROperating Room (surgery),Operational/Operations Research,Oregon (postal symbol),overreciprocation,when the leader of an inner circle friendship contacts a friend more than is wanted or reasonable
2804ORAUOak Ridge Associated Universities
2805ORBObject Request Broker
2806ORBATOrder of Battle
2807ORDOffice of Research and Development,Operational Requirements Document
2808ORFOperational iness Float
2809ORISEOak Ridge Institute for Science and Education
2810ORNLOak Ridge National Laboratory
2811ORROak Ridge Reservation (U.S. DOE),Office of Rail Regulation (UK government),Office of Refugee Resettlement,(CIA) Office of Research and Reports,Operational iness Rate,Operational iness Review
2812ORSAOxacillin-resistant Staphylococcus aureus,Operations Research Society of America
2813OSOperating System
2814OsOsmium
2815OSAOrder of St. Augustine
2816OSCEOrganisation for Security and Cooperation in Europe
2817OSDU.S. Office of the Secretary of Defense,On-screen Display
2818OSDLOpen Source Development Labs
2819OSEOwn Separate Entrance
2820OSERSU.S. Department of Education Office of Special Education and Rehabilitative Services
2821OSETIOptical SETI also Optical SETI
2822OSHAOccupational Safety and Health Administration
2823OSIOffice of Strategic Influence,Ontario Swine Improvement,Open Source Initiative,Open Systems Interconnection
2824OSIA(U.S.) On-Site Inspection Agency
2825OSIRISOptical,Spectroscopic,and Infrared Remote Imaging System (astronomical system on the Rosetta spacecraft),Optical System for Imaging and low Resolution Integrated Spectroscopy (astronomical system on the land-based Gran Telescopio Canarias)
2826OSLOpen Source License, Optically Stimulated Luminescence, Orbiting Solar Laboratory
2827OSMOne Saturday Morning
2828OSOTPBOIASOne Sec,On The Phone,Be Off In A Sec
2829OSPAOperations Security Professional's Association site of OSPA
2830OSPAOregon School Psychologists Association [3]
2831OSRHOružane Snage Republike Hrvatske (en: Armed forces of the Republic of Croatia)
2832OSUOhio State University,Oklahoma State University
2833OTAOffice of Technology Assessment, Orthodontic Technicians Association
2834OTACOrthodontic Technicians Association Conference,Orthodontic Technicians Association Council
2835OTCOver-The-Counter (drugs)
2836OTDOff the derech (referring to an Orthodox Jew who has stopped practicing the tenets of his or her faith)
2837OTEA(U.S. Army) Operational Test Evaluation Agency
2838OTIOffice of Transition Initiatives (United States Agency for International Development)
2839OTOHOn The Other Hand
2840OTSOff the scale,sexually untouchable except for a lot of money
2841OTSBHOver The Shoulder Boulder Holder
2842OTWOn The Way
2843OTYBLOver To You Blue Leader
2844OTYRLOver To You Red Leader
2845OUUniversity of Oklahoma
2846OWOld Wykehamist
2847OWNOprah Winfrey Network
2848OXIATA code for Orient Thai Airlines
2849OXCOptical cross-connect
2850OXMOfficial Xbox Magazine
2851OXTOxytocin
2852OZ(?) Australia
2853ppico
2854P2PPeer-to-peer (networking)
2855pApicoampere
2856PAAPosition Area for Artillery
2857PABXPrivate Automated Branch eXchange (company phone system)
2858PACOM(U.S.) Pacific Command
2859PADIProfessional Association of Diving Instructors
2860PAEKPolyArylEtherKetone
2861PAFCPlymouth Argyle Football Club
2862PAHPolycyclic aromatic hydrocarbon
2863PAHOPan American Health Organization
2864PAKPakistan (ISO 3166 trigram)
2865PAMPrecision Attack Missile
2866PANSPretty Advanced/Awesome Network Services (cf. POTS)
2867PARCPalo Alto Research Center
2868PAROSPrevention of an Arms Race in Outer Space (treaty)
2869PARP(NATO Partnership for Peace) Planning And Review Process
2870PARWIGPower Augmented Ram Wing In Ground (aeroplane wing shape)
2871PASSee entry
2872PASRPersonnel Accounting and Strength Reporting
2873PATHPort Authority Trans-Hudson
2874PAYDPay As You Drive
2875PAYEPay As You Earn
2876PbLead (Latin Plumbum)
2877PBPolyButylene
2878PBBPolyBrominated Biphenyl
2879PBCKProblem Between Chair and Keyboard (computer help desk in-joke)
2880PBDPolyButaDiene
2881PBDEPolyBrominated Diphenyl Ether
2882PBIPolyBenzImidazole
2883PBNPolyButylene Naphthalate
2884PBOHPlease Become Old History
2885PBTPolyButylene Terephthalate
2886PBXPrivate Branch eXchange (company phone system)
2887pCpicocoulomb
2888PCASPlanet-Crossing Asteroid Survey
2889PCBsee entry
2890PCCBPorsche Ceramic Composite Brake
2891PCCIPPresident's Commission on Critical Infrastructure Protection
2892PCEPerChlorEthylene
2893PCIePeripheral Component Interconnect Express (computer bus)
2894PCLPassive Coherent Location
2895PCMCIAPersonal Computer Memory Card International Association (People Can't Memorise Computer-Industry Acronyms)
2896PCNPitcairn Islands (ISO 3166 trigram)
2897PCPIPhysician Consortium for Performance Improvement (AMA)
2898PCRPolymerase chain reaction
2899PCSSDPulaski County Special School District
2900PCZPanama Canal Zone (ISO 3166 trigram; obsolete 1980)
2901PdPalladium
2902PDProduct Director—Example: CERDEC Product Director C4ISR and Network Modernization
2903PDLPure Dumb Luck (Texan punk band)
2904PDNPull-Down Network
2905PDRYPeople's Democratic Republic of Yemen (obsolete since 1990)
2906PDTPacific Daylight [Saving] Time (UTC-7 hours)
2907PEProfessional Engineer
2908PEBCACProblem Exists Between Chair and Computer (IT help desk in-joke)
2909PEBKACProblem Exists Between Keyboard and Chair (ditto)
2910PEEKPolyEtherEtherKetone
2911PEETPartnerships for Enhancing Expertise in Taxonomy
2912PEKPolyEtherKetone
2913PEPFARPresident's Emergency Plan For AIDS Relief
2914PERPeru (ISO 3166 trigram)
2915perlusually lower case Practical Extraction and Report Language
2916PESPolyEtherSulfone
2917PESTUK Public Engagement with Science and Technology
2918PETEPolyEthyleneTErephthalate
2919PETPPolyEthyleneTerePhthalate
2920pFpicofarad
2921PFDPermanent Fund Dividend = personal flotation device
2922PFEPermanent Forest Estate
2923PfPPartnership for Peace
2924Pgpetagram
2925pgpicogram
2926PGCEPostgraduate Certificate in Education
2927PGDPre-implantation Genetic Diagnosis
2928PGENIPharmaco-Genetics for Every Nation Initiative
2929PGHPre-implantation Genetic Haplotyping
2930PGMPrecision-Guided Munition
2931PGPPretty Good Privacy
2932PHLPhilippines (ISO 3166 trigram)
2933PHQPatient Health Questionnaire
2934PiPebi
2935PIBPolyIsoButylene
2936PICPerson In Charge
2937PICNICProblem In Chair Not In Computer
2938PICSPrivate Investment Capital Subscription
2939PIFPartners in Flight
2940PIGPipeline Inspection Gauge
2941PINPersonal Identification Number
2942PINFPeople In Need Foundation (Czech charitable organisation)
2943PIPAProgram on International Policy Attitudes
2944PIRPriority Intelligence Requirement
2945PIRAProvisional Irish Republican Army
2946PIREPSPilot Reports
2947PITAPain In The Ass
2948PJpetajoule
2949pJpicojoule
2950PJHQPermanent Joint Headquarters
2951PKEPartnership of Kindermusik Educators [1] &[2] & [2]
2952PKIPublic Key Infrastructure (cryptography)
2953PKUPhenylketonuria
2954pLpicolitre
2955PLAIDPrecision Location and Identification
2956PLBPersonal Locator Beacon
2957PLCPublic Limited Company (British)
2958PLCCPlastic Leaded Chip Carrier (electronics)
2959PLDProbable Line of Deployment
2960PLEBSPeople Lacking Everyday Basic Skills
2961PLFParachute Landing Fall
2962PLIFPlanar Laser-Induced Fluorescence
2963PLLPhase-Locked Loop (electronics)
2964PLMPolarized Light Microscope/Microscopy
2965PLMBAPhospholipid Bilayer Microarray
2966PlnPlatoon
2967PLOPalestine Liberation Organization
2968PLOKTAPress Lots Of Keys To Abort
2969PLPPlatonic Life Partner
2970PLUTOPipe Line Under The Ocean
2971PLWPalau (ISO 3166 trigram)
2972pmpicometre
2973PMCPrimary Motor Cortex
2974PMIPositive Material Identification
2975PMIDPubMed Identifier
2976PMMAPolyMethylMethAcrylate
2977PMSPremenstrual Syndrome
2978PMSLPiss Myself Laughing (Internet shorthand)
2979PMTPremenstrual Tension (UK) (see Premenstrual Syndrome)
2980pNpiconewton
2981PNACProject for the New American Century
2982PNVSPilot Night Vision Sensor
2983PoPolonium
2984POPost Office
2985POPurchase Order
2986POCDPost-Operative Cognitive Dysfunction
2987podPlain Old Documentation
2988POFFPlain Old Flat File
2989POGOProject On Government Oversight
2990POIProgram Of Instruction
2991POKPlane Of Knowledge
2992POLADPolitical Advice
2993POMDPPartially observable Markov decision process
2994PooSPoo Sniffer (Internet shorthand)
2995POS- Point Of Sale terminal (retail industry transaction computers)Piece Of S**t
2996POSHPort Outbound Starboard Home (alleged)
2997POSSLQPerson of the Opposite Sex Sharing Living Quarters
2998POTPlane Of Tranquility
2999POTSPlain Old Telephone Service (cf. PANS),Postural Orthostatic Tachycardia Syndrome
3000POTUSPresident of the United States
3001POVPoint of view
3002POWPrisoner of war
3003PPASC(U.S.) Plans and Program Analysis Support Center
3004PPCLIPrincess Patricia's Canadian Light Infantry (regiment)
3005PPLIPrecise Participant Location & Identification
3006PPMProject Planning and Management
3007PPOPolyPhenylene Oxide
3008PPQNPulses Per Quarter Note (ditto)
3009PPQTPre-Production Qualification Test
3010PPVPay-per-view
3011PrPastor, Priest
3012PRPublic Relations
3013PrbPresbyter
3014PRBOPoint Reyes Bird Observatory
3015PRCPeople's Republic of China
3016PRDCERDEC Product Realization Directorate
3017PRFGPartial Fog (METAR Code)
3018PRIPuerto Rico (ISO 3166 trigram)
3019PRKDemocratic People's Republic of Korea (ISO 3166 trigram)
3020PRMPersonnel iness Management
3021PRYParaguay (ISO 3166 trigram)
3022Pspetasecond
3023pSpicosiemens
3024PSGPacific Seabird Group
3025PSIPortable Source Initiative
3026PSIPounds per square inch
3027PSSPersonnel System Support
3028PSTPacific Standard Time (UTC-8 hours)
3029PSUPennsylvania State University
3030PsyOpPsychological Operations
3031pTpicotesla
3032PtPlatinum
3033PTAParent-Teacher Association
3034PTALPublic Transport Accessibility Level
3035PTESPeople's Trust for Endangered Species
3036PTFEPolyTetraFluoroEthylene
3037PTIPardon the Interruption
3038PTSDPost-Traumatic Stress Disorder
3039PuPlutonium
3040PubPublication
3041PUGPET Users Group
3042PUNPull-Up Network
3043PUPPull-Up Point
3044PUSUnited States Miscellaneous Pacific Islands (ISO 3166 trigram; obsolete 1986)
3045PVpetavolt
3046pVpicovolt
3047PvEPlayer versus Environment
3048PvPPlayer versus Player
3049PVRPersonal Video Recorder
3050PvZPlants vs. Zombies
3051PWPalau (postal symbol; ISO 3166 digram)
3052pWpicowatt
3053PWAPirates With Attitude
3054PWBAPension and Welfare Benefits Administration
3055PWCPieceWise Constant (describing a mathematical function)
3056PwCPricewaterhouseCoopers (international accounting firm)
3057PWLPieceWise Linear (describing a mathematical function)
3058PWLCPieceWise Linear and Concave/Convex (describing a mathematical function)
3059PWRPressurized Water Reactor
3060PXPost eXchange
3061PYFFrench Polynesia (ISO 3166 trigram)
3062PYMWYMIPut Your Money Where Your Mouth Is
3063Q1First Quarter
3064Q2Second Quarter
3065Q3Third Quarter
3066Q4Fourth Quarter
3067QAQatar (FIPS 10-4 country code; ISO 3166 digram)
3068QantasQueensland And Northern Territory Aerial Services
3069QATQatar (ISO 3166 trigram)
3070QBQuarterback (football)
3071QCDQuantum ChromoDynamics
3072QDRQuadrennial Defense Review
3073QEHQueen Elizabeth's Hospital
3074QKAir Canada Jazz (IATA airline designator)
3075QNHRegional mean sea level atmospheric pressure (aeronautical Q code)
3076QPSQuark Publishing System
3077QSCATQuick Scatterometer satellite
3078QSLQuébec Sign Language
3079QSOQuasi-Stellar Object
3080Quango(British Commonwealth) QUasi Autonomous Non-Governmental Organisation
3081QuasarQuasi-stellar radio source
3082QUBQueen's University Belfast
3083QUIETQ and U Imaging ExperimenT (Q and U are the Stokes parameters of the CMBR polarization)
3084QZAwair (IATA airline designator)
3085R2IResistance to Interrogation
3086RARadio Australia
3087RaRadium
3088RAAFRoyal Australian Air Force
3089RabobankRaiffeisen-Boerenleenbank (from the two banks that merged to form the modern company)
3090RACKRisk Aware Consensual Kink (SM phrase)
3091RaconRAdar beaCON
3092RADARoyal Academy of Dramatic Art
3093RadarRadio Detection And Ranging
3094RadBRad51/Dmc1 homologous protein
3095RADbRouting Assets Data Base
3096RADCRegion Air Defence Commander
3097RAEUK Royal Aircraft Establishment (-1991)
3098RAGBRAIRegister's Annual Great Bicycle Ride Across Iowa
3099RAMRoyal Air Maroc
3100RamarkRAdar MARKer
3101RAOCRear Area Operation Centre
3102RARDEUK Royal Armament Research and Development Establishment (1962-1991)
3103RARERapid Acquisition with Relaxation Enhancement (MRI technique)
3104RATELORadiotelephone Operator
3105RbRubidium
3106RBRunning Back (football)
3107RBIRuns Batted In
3108RCsee entry
3109RCAFRoyal Canadian Air Force
3110RCCRescue Co-ordination Centre
3111RCCORoyal Canadian College of Organists
3112RCHARoyal Canadian Horse Artillery (regiment)
3113RCMPRoyal Canadian Mounted Police
3114RDRadio Disney
3115RDDRadiological Dispersion Device
3116RDMRemotely Delivered/Deliverable Mine
3117RDTRemote Digital Terminal
3118RDVRemote Detection Vehicle
3119ReRhenium
3120RERoyal Engineers
3121REACTRemote Electronically Activated Control Technology
3122REAMRetired Educators Association of Minnesota
3123RECCEReconnaissance
3124REEFReef Environmental Education Foundation
3125REMRapid Eye Movement (sleep phase),Rosicrucian Egyptian Museum
3126REMERoyal Electrical and Mechanical Engineers
3127RERCRehabilitation Engineering Research Center
3128RESNARehabilitation Engineering and Assistive Technology Society of North America
3129REURéunion (ISO 3166 trigram)
3130RfRutherfordium
3131RFDRequest for Documentation
3132RFERequest for Evaluation
3133RFEFReal Federación Española de Fútbol (Spanish for Royal Spanish Football Federation)
3134RFFRight of First Refusal (legal term)
3135RFIDRadio Frequency IDentification
3136RFLRugby Football League
3137RFPRequest for Proposal
3138RFQRequest for Quotation
3139RFTRequest for Tender
3140RFURugby Football Union
3141RGRepublican Guard
3142RgRoentgenium
3143RGBRed Green Blue (colour model)
3144RGBIRed Green Blue Intensity (ditto)
3145RhRhodium
3146RHSouthern Rhodesia (ISO 3166 digram; obsolete 1980)
3147RHICRelativistic Heavy Ion Collider
3148RHLIRoyal Hamilton Light Infantry (Canadian militia regiment)
3149RHOSouthern Rhodesia (ISO 3166 trigram; obsolete 1980)
3150RHUReplacement Holding Unit
3151RIRhode Island (postal symbol)
3152RIAARecording Industry Association of America
3153RIBARoyal Institute of British Architects
3154RIFARed imported fire ant
3155RILARetail Industry Leaders Association
3156RIMVSRetinal Imaging Machine Vision System
3157RINORepublican In Name Only[1]
3158RISCReduced Instruction Set Computer
3159RJDReduced Julian Day
3160RKBARight to Keep and Bear Arms (Second Amendment to the United States Constitution)
3161RKORadio-Keith-Orpheum Pictures
3162RLPRecognised [Operating/Operational] Land Picture
3163RLSRestless Leg Syndrome
3164RLYRally Point
3165RMsee separate disambiguation page
3166RMCRobert Menzies College
3167RMDARecords Management and Declassification Agency
3168RMPRecognised [Operating/Operational] Maritime Picture
3169RNRadio Netherlands
3170RnRadon
3171RNARiboNucleic Acid
3172RNADRoyal Naval Armaments Depot (UK)
3173RNPSRadio Network Planning System
3174RNZRadio New Zealand
3175RNZIRadio New Zealand International
3176ROARate Of Ascent
3177ROERules Of Engagement
3178ROFLOLRolling On the Floor Laughing Out Loud
3179ROHRing of Honor
3180ROKRepublic of Korea
3181ROPRender Output Pipeline
3182ROPEResearch Opportunity and Performance Evidence
3183ROSReactive Oxygen Species
3184ROURomania (ISO 3166 trigram)
3185ROVRemotely Operated Vehicle
3186ROZRestricted Operations Zone
3187RPARegional Plan Association
3188RPDRecognition-Primed Decision-making
3189RPFRwandan Patriotic Front
3190RPLReverse Polish Lisp
3191rpmrevolutions per minute
3192RPNreverse Polish notation
3193rpsrevolutions per second
3194RPVRemotely Piloted Vehicle
3195RQPuerto Rico (FIPS 10-4 territory code)
3196RRBRailroad Retirement Board
3197RRNRecurrence Rate Number
3198RRPRecurrent Respiratory Papillomatosis
3199RRSRacing Rules of Sailing
3200RRSPRegistered Retirement Savings Plan (Canada; roughly equivalent to the IRA in the U.S.)
3201RSRussia (FIPS 10-4 country code)
3202RSIRepetitive Strain Injury
3203RSJRolled Steel Joist (construction)
3204RSNReal Soon Now (coined by author Jerry Pournelle)
3205RSPB(UK) Royal Society for the Protection of Birds
3206RSPCARoyal Society for the Prevention of Cruelty to Animals
3207RSRRequired Supply Rate
3208RSREUK Royal Signals and Radar Establishment (1976-1991)
3209RSRIRed Sands Research Institute
3210RSSReally Simple Syndication
3211RTARoad traffic accident (British)
3212RTBFRadio-Télévision belge de la Communauté française
3213RTFRich Text Format
3214RTFMthe Fucking/Fine Manual
3215RTGRadio-isotope Thermoelectric Generator also used for Rubber Tyred Gantry crane
3216RTIRun-Time Infrastructure (Simulation)
3217RTLsee entry
3218RTPReal-time Transport Protocol
3219RTSsee entry
3220RTTRound Trip Timing
3221RURussia (ISO 3166 digram)
3222RuRuthenium
3223RUCRoyal Ulster Constabulary
3224RUSRussia (ISO 3166 trigram)
3225RUSIRoyal United Services Institute for Defence Studies
3226RWRwanda (ISO 3166 and FIPS 10-4 country code digram)
3227RWARwanda (ISO 3166 trigram)
3228RWHRain Water Harvesting
3229RWRRadar Warning Receiver
3230RWSRemote Weapon Station
3231RXReceive
3232SBNOStanding but not operating (in reference to amusement parks)
3233SCOTUSSupreme Court of the United States
3234SCROTUSSo-called Ruler of the United States
3235SDHCSecure Digital High Capacity
3236SDXCSecure Digital eXtended Capacity
3237SGSenegal (FIPS 10-4 country code), Singapore (ISO 3166 digram), Snow Grains (METAR Code), Study Group
3238SGOTUSSecond Gentleman of the United States
3239SHOShowtime (see also sho.com)
3240SIRIService Interface for Real Time Information
3241SiriSpeech Interpretation and Recognition Interface (Apple iOS software)
3242SLOTUSSecond Lady of the United States (the vice president's wife)
3243SoConSouthern Conference (U.S. college sports)
3244STBSurface Transportation Board[2]
3245SWACSouthwestern Athletic Conference
3246SWANSystem for Wearable Audio Navigation
3247SWATSpecial Weapons And Tactics
3248SWFSingle White Female
3249TaTantalum
3250TAACOMU.S. Theater Army Area Command
3251TAADCOORDTheatre Army Air Defence Co-ordinator
3252TAARTrace Amine-Associated Receptor
3253TACU.S. Tactical Air Command (1946-1992)
3254TACANTactical Air Navigation
3255TACCOTactical Coordinator
3256TACCSFU.S. Theater Aerospace Command & Control Simulation Facility
3257TACDARTactical Detection And Reporting
3258TACSOPTactical SOP (Standing Operating Procedure)
3259TADILTactical Digital Information Link
3260TAITarget[ed] Area of Interest
3261TAJTom and Jerry
3262TAJTTom and Jerry Tales
3263TALESTechnical Advice and Lexicon for Enabling Simulation
3264TANJThere Ain't No Justice (used as expletive in the Ringworld novels)
3265TANPTerrain-Aware Network Planner
3266TANSTAAFLThere Ain't No Such Thing As A Free Lunch (coined by author Robert A. Heinlein in his The Moon Is a Harsh Mistress)
3267TAPPSTexas Association of Private and Parochial Schools
3268TARDISTime And Relative Dimension In Space (from Doctor Who)
3269TASTasmania (postal symbol)
3270TASERThomas A. Swift's Electric Rifle
3271TASMTactical Air-to-Surface Missile
3272TATTourism Authority of Thailand
3273TATPTriAcetone TriPeroxide
3274TATTTired All The Time (medical diagnosis in-joke)
3275TbTerbium
3276TBTuberculosis
3277TBAto be announced
3278TBBPATetraBromoBisPhenol-A
3279TBDto be done, or: to be documented, or: to be determined, or: to be decided
3280TBFto be fair
3281TBHTo Be Honest
3282TBLTurkish Basketball League
3283TBSTurner Broadcasting System
3284TBTTributyltin
3285TcTechnetium
3286TCAATop Counter-Assault Agents
3287TCASTraffic Collision Avoidance System
3288TCCCSTactical Command,Control and Communication System
3289TCDChad (ISO 3166 trigram)
3290TCHDTruck Cargo Heavy Duty
3291TCLTool Command Language
3292TCMTurner Classic Movies
3293TCUTexas Christian University
3294TCWTasty Coma Wife
3295TCWMSTele-Center Workforce Management System
3296TDAThe Disney Afternoon
3297TDLTactical Data Link
3298TDMTime-Division Multiplexing
3299TDMATime Division Multiple Access
3300TDPTechnology Demonstration Programme
3301TDRSTracking Data and Relay Satellite
3302TeTellurium
3303TEALTasman Empire Airways Limited
3304TeamTogether everyone achieves more
3305TEAMSThe East African Marine System (fiber optic cable)
3306TEDTechnology Entertainment Design prize
3307TENCAPTactical Exploitation of National Capabilities
3308TERSTactical Event Reporting System
3309TESTactical Event System
3310TESTThesaurus of Engineering and Scientific Terms
3311TEUTwenty-foot equivalent unit (cargo capacity)
3312TeVeSTensor Vector Scalar theory
3313TFMPPTrifluorophenylmethylpiperazine
3314TFRTotal Fertility Rate
3315TFTThin-Film Transistor
3316TgTeragram
3317TGTogo (ISO 3166 digram)
3318TGOTogo (ISO 3166 trigram)
3319ThThorium
3320THAThailand (ISO 3166 trigram)
3321THAADTerminal High Altitude Area Defence
3322THEGENTRYThe High-End Group of Earth's New Technologies Research Yield
3323THELTactical High Energy Laser ACTD
3324THGTetrahydrogestrinone
3325TIATotal Information Awareness initiative
3326TIATransient Ischemic Attack
3327TIALDThermal Imaging and Airborne Laser Designation
3328TIBSTactical Information Broadcast System
3329TICTroops In Contact
3330TIGERSTopologically Integrated Geographic Encoding and Referencing System
3331TINCThere Is No Cabal
3332TIPThermal Identification Panel
3333titsToes in the Sand
3334TJDTruncated Julian Day
3335TJKTajikistan (ISO 3166 trigram)
3336TKLTokelau (ISO 3166 trigram)
3337TKMTurkmenistan (ISO 3166 trigram)
3338TlThallium
3339TLAThree-Letter Abbreviation/Acronym
3340TLAMTomahawk Land Attack Missile
3341TLATOJLThe Life and Times of Juniper Lee
3342TLPMT1 Line Performance Monitor
3343TmTerametre
3344TMAPTexas Medication Algorithm Project
3345TMCThe Movie Channel
3346TMDTheatre Missile Defence
3347TMDKThe Mighty Don't Kneel (Australian professional wrestling stable also active in Japan)
3348TMIToo Much Information
3349TMJTemporoMandibular Joint (syndrome)
3350TMNTTeenage Mutant Ninja Turtles
3351TMPGTransparent Multi-Platform Gateway
3352TMRTwin Main Rotors (helicopter type)
3353TMSTranscranial Magnetic Stimulation
3354TMTThirty Meter Telescope
3355TMTOWTDIThere's Than One Way To Do It (from Perl)
3356TNATotal Nonstop Action Wrestling
3357TNOTrans-Neptunian Object
3358TOBSTime of OBServation
3359TOCTable Of Contents, Tactical Operations Centre, Temporo-Occipital transition Cortex, Top of Concrete
3360TOGTogo (IOC and FIFA trigram,but not ISO 3166)
3361TOGSThermal Observation Gunnery Sight
3362TOMSTotal Ozone Mapping Spectrometer (satellite instrument)
3363TONTonga (ISO 3166 trigram)
3364TOSTape Operating System,Terms of service,The Original Series,used to distinguish the first Star Trek TV series from other parts of the media franchise,Tramiel Operating System
3365TOTTime On Target
3366TOWTube-launched,Optically tracked,Wire-guided (anti-tank missile)
3367TPEast Timor (ISO 3166 digram; obsolete 2002),São Tomé and Príncipe (FIPS 10-4 country code),Training Practice,Trident Ploughshares
3368TPEChinese Taipei (IOC and FIFA trigram for the country also known as Taiwan)
3369TPIThe point is
3370TPOThrombopoietin
3371TPSThe Pennington School
3372TPTBThe Powers That Be (often used to refer to the people responsible for the content of TV series or movies)
3373TQTop Qualifier (similar to Pole Position in car racing)
3374TRATechnology iness Assessment
3375TRAC(U.S. Army) TRADOC Analysis Center
3376TRACONTerminal Radar Approach Control
3377TRADOC(U.S. Army) Training and Doctrine Command
3378TRANSCOMU.S. Transportation Command
3379TRAPTactical Receive equipment and related Applications
3380TRASANATRADOC Systems Analysis Agency
3381TRDTowed Radar Decoy
3382TRIGATThird Generation Antitank (missile)
3383TRLTechnology readiness level
3384TrpTroop
3385TRUTransuranic
3386TRUEXTraining in Urban Environment Exercise
3387TRWThompson Ramo Wooldridge Inc.
3388TsTerasecond
3389TSTerasiemens,Thunderstorm (METAR code),Tunisia (FIPS 10-4 country code),TinySex,Transsexual, Tough Sh*t
3390TSATheatre Storage Area,Time Slot Allocation,Transportation Security Administration,The Salvation Army
3391TSECTransmission Security Encryption Code
3392TSLTransportation Security Laboratory
3393TSNThe Sporting News (historic name of the periodical now known as Sporting News),The Sports Network
3394TSOThe Stationery Office (was HMSO until 1996),(U.S.) TRICARE Support Office,Trans-Siberian Orchestra (band)
3395TSOPTactical Standing Operation Procedure,The Sound of Philadelphia (classic 1970s R&B instrumental)
3396TSRTerminate and Stay Resident
3397TSSIAThe Subject Says It All
3398TTTeratesla,Terrestrial Time,Tourist Trophy (Motorcycle sport),Trinidad and Tobago (ISO 3166 digram)
3399TTCTTorrance Tests of Creative Thinking
3400TTFNTa Ta For Now
3401TTLTax,Title,License,Through-the-lens (photography),Time 'till live,Time to live,Transistor-transistor logic
3402TTOTrinidad and Tobago (ISO 3166 trigram)
3403TTPTactics,Techniques,and Procedures,Thrombotic thrombocytopenic purpura,Trailer Transfer Point
3404TTTEAFThomas the Tank Engine and Friends
3405TTYTeleTYpewriter (Printer)
3406TTYLTo You Later (Internet slang)
3407TTZTetrazolium
3408TUTechnische Universität (German for 'Technical University'),Thammasat University (Thailand),Turkey (FIPS 10-4 country code)
3409TUCTrades Union Congress
3410TUGTeX Users Group
3411TUIText-based user interface (cf. CLI),among other uses
3412TUNTunisia (ISO 3166 trigram)
3413TUNSTechnical University of Nova Scotia
3414TURTurkey (ISO 3166 trigram)
3415TUSKTank Urban Survival Kit
3416TUVTuvalu (ISO 3166 trigram)
3417TVTelevision,Teravolt,Transvestite,Tuvalu (ISO 3166 and FIPS 10-4 country code digram)
3418TvTime value,a designation seen on some camera dials for shutter priority mode
3419TVATennessee Valley Authority
3420TVGTelevision Games (Network),Tick,Very Good,Often used by School Teachers when marking homework etc. (Tick VG)[1][2]
3421TVRTreVor (Wilkinson) Racing
3422TVSTornado vortex signature
3423TWRepublic of China (Taiwan) (ISO 3166 and FIPS 10-4 country code digram),Terawatt
3424TWAINTechnology Without An Interesting Name
3425TWETrans World Entertainment
3426TWIThe Welding Institute
3427TWIPTake What Insurance Pays,When a surgeon agrees to accept a lower payment than he ordinarily would for a procedure and not charge the patient the difference
3428TWNRepublic of China (Taiwan) (ISO 3166 trigram)
3429TWPTechnical Working Paper
3430TWSThermal Weapon Sight,Track While Scan
3431TXTexas (postal symbol),Transmit,Turkmenistan (FIPS 10-4 country code)
3432TXVThermostatic Expansion Valve
3433TYTTake Your Time,Internet chat abbreviation
3434TZTanzania (ISO 3166 and FIPS 10-4 country code digram)
3435TZATanzania (ISO 3166 trigram)
3436TZCTetrazolium chloride
3437UUranium
3438UAUkraine (ISO 3166 digram) Unit of Action
3439UAAPUniversity Athletic Association of the Philippines
3440UABUniversity of Alabama at Birmingham
3441UAVUnmanned Aerial Vehicle,Unprotected Anal and Vaginal sex,UB[edit]
3442UBCUnited Baptist Church,University of British Columbia
3443UBIGEOUbicación Geografica (Spanish for Geographical Location)
3444UBSUnbundled Bitstream Services,United Bank of Switzerland,United Banque Suisse
3445UCBSAUnited Cricket Board of South Africa
3446UCFUniversity of Central Florida
3447UCLAUniversity of California at Los Angeles
3448UCLESUniversity of Cambridge Local Examinations Syndicate
3449UCRUniversity of California at Riverside
3450UCRUniversity of Costa Rica
3451UCSUnion of Concerned Scientists
3452UCSBUniversity of California at Santa Barbara
3453UCSDUniversity of California at San Diego
3454UDASUppsala-DLR Asteroid Survey
3455UDDIUniversal Description,Discovery and Integration
3456UDTSUppsala-DLR Trojan Survey
3457UEUnit of Employment
3458UEFAUnion of European Football Associations
3459UESACUppsala-ESO Survey of Asteroids and Comets
3460UFCUltimate Fighting Championship
3461UFOUnidentified Flying Object, or: United Farmers of Ontario
3462UGUganda (ISO 3166 and FIPS 10-4 country code digram)
3463UGAUganda (ISO 3166 trigram)
3464UGVUnmanned Ground Vehicle
3465UHFUltra High Frequency
3466UHMWUltra-High Molecular Weight
3467UHRBUltra-High Resolution Building (simulation)
3468UICUniversity of Illinois at Chicago
3469UIDUser ID
3470UIUCUniversity of Illinois at Urbana-Champaign
3471UJTLUniversal Joint Task List
3472UKIPUnited Kingdom Independence Party
3473UKRUkraine (ISO 3166 trigram)
3474ULUnderwriters Laboratories
3475ULFUltra Low Frequency
3476UMU.S. Minor Outlying Islands (postal symbol; ISO 3166 digram)
3477UMCPUnit Maintenance Collection Point
3478UMESUniversity of Maryland Eastern Shore
3479UMIU.S. Minor Outlying Islands (ISO 3166 trigram)
3480UMISTUniversity of Manchester Institute of Science and Technology
3481UMTSUniversal Mobile Telecommunications System
3482UNUnited Nations
3483UNABOMUniversity and airline bomber (FBI case name)
3484UNAIDS(i/a) Joint United Nations Programme on HIV/AIDS
3485UNAMSILUnited Nations Mission in Sierra Leone
3486UNCFUnited Negro College Fund
3487UNCLOSUnited Nations Convention on the Law of the Sea
3488UNCSGNUnited Nations Conference on the Standardization of Geographical Names
3489UNCTADUnited Nations Conference on Trade and Development
3490UNDCPUnited Nations Drug Control Programme
3491UNDE(i/a) Union of National Defence Employees (Canada)
3492UNDPUnited Nations Development Programme
3493UNEPUnited Nations Environment Programme
3494UNFCCCUnited Nations Framework Convention on Climate Change
3495UNFICYPUnited Nations Peacekeeping Force in Cyprus
3496UNGEGNUnited Nations Group of Experts on Geographical Names
3497UNHCRUnited Nations High Commission (er) for Refugees
3498UNICEFUnited Nations Children's Fund (originally the United Nations International Children's Emergency Fund)
3499UNICRIUnited Nations Interregional Crime and Justice Research Institute
3500UNIDOUnited Nations Industrial Development Organization
3501UNIFEMUnited Nations Development Fund for Women (from the French Fonds de développement des Nations unies pour la femme)
3502UNMIKUnited Nations Interim Administration Mission in Kosovo
3503UNOSOMUnited Nations Operations in Somalia
3504UNPROFORUnited Nations Protection Force (in former Yugoslavia)
3505UNRISDUnited Nations Research Institute for Social Development
3506UNSMUnion of Nova Scotian Municipalities
3507UNTACUnited Nations Transitional Authority in Cambodia
3508UNTAET(i/a) United Nations Transitional Administration in East Timor
3509UNUUnited Nations University
3510UPdMUniversità Popolare della Multimedialità
3511UPIUnited Press International
3512UPNUnited Paramount Network
3513UPUUniversal Postal Union
3514URBSFAUnion royale belge des sociétés de football association (French for Royal Belgian Football Association)
3515URDUser Requirements Document
3516URYUruguay (ISO 3166 trigram)
3517USUnited States (also ISO 3166 and FIPS 10-4 country code digram)
3518USAFUnited States Air Force
3519USAFSPCU.S. Air Force Space Command
3520USAIDUnited States Agency for International Development
3521USAPATRIOTUniting and Strengthening America by Providing Appropriate Tools Required to Intercept and Obstruct Terrorism
3522USAREURUnited States Army Europe
3523USBUniversal Serial Bus
3524USCGUnited States Coast Guard
3525USDAUnited States Department of Agriculture
3526USDIUnited States Department of the Interior
3527USDOEUnited States Department of Energy
3528USDRE(U.S.) Under-Secretary of Defense for Research and Engineering (1978-1986)
3529USECUnited States Enrichment Corporation
3530USFLUnited States Football League
3531USFWSUnited States Fish and Wildlife Service
3532USGSUnited States Geological Survey
3533USIAUnited States Information Agency
3534USJFCOMUnited States Joint Forces Command
3535USMCUnited States Marine Corps
3536USMNTUnited States men's national (soccer) team
3537USNUnited States Navy
3538USNBUnited States Naval Base
3539USNGUnited States National Grid
3540USNHUnited States Naval Hospital
3541USNIUnited States Naval Institute
3542USNOU.S. Naval Observatory
3543USNOFSUnited States Naval Observatory Flagstaff Station
3544USNPUnited States Newspaper Program
3545USNRUnited States Navy Reserve
3546USNSUnited States Naval Ship
3547USNZUniversity Sport New Zealand
3548USPSUnited States Postal Service
3549USPTOUnited States Patent and Trademark Office
3550USSUnited States ship (sometimes meaningless; see Star Trek)
3551USSPACECOMUnited States Space Command
3552USSRUnion of Soviet Socialist Republics
3553USTUnderground Storage Tank
3554USTRANSCOMUnited States Transportation Command
3555USWNTUnited States women's national (soccer) team
3556UTUniversal Time
3557UTEPUniversity of Texas at El Paso (pronounced you-tep)
3558UTMUniversal Transverse Mercator (geographical co-ordinate system)
3559UUAUnitarian Universalist Association
3560UUIDUniversally Unique Identifier (see also GUID)
3561UUVUnmanned Underwater Vehicle
3562UWUniversity of Washington
3563UWOUniversity of Western Ontario
3564UWTUnder Water Telephone
3565UWTGUnder Water Tug
3566UWWUnited World Wrestling
3567UXOUnexploded Ordnance
3568UYUruguay (ISO 3166 and FIPS 10-4 country code digram)
3569UZUzbekistan (ISO 3166 and FIPS 10-4 country code digram)
3570UZBUzbekistan (ISO 3166 trigram)
3571VACISVehicle And Container Inspection System
3572VACISVictorian Ambulance Clinical Information System
3573VANOSVariable Nockenwelle System
3574VAOVienna Art Orchestra
3575VBAVisual Basic for Applications
3576vCJDVariant Creutzfeldt-Jakob Disease
3577VCNO(U.S.) Vice Chief of Naval Operations
3578VCofSVice Chief of Staff
3579VCRVideo cassette recorder
3580VCTSaint Vincent and the Grenadines (ISO 3166 trigram)
3581VDFSVisualSVN Distributed File System (VDFS)
3582VEVenezuela (FIPS 10-4 country code; ISO 3166 digram)
3583VEEGAVenus Earth Earth Gravity Assist manœuvre
3584VENVenezuela (ISO 3166 trigram)
3585VERITASVery Energetic Radiation Imaging Telescope Array System
3586VfDs for deletion (used in Wikipedia)
3587VFMValue For Money
3588VFMOVery Fast Moving Object (astronomy)
3589VFTVirtual Function Table
3590VFWVeterans of Foreign Wars
3591VGBritish Virgin Islands (ISO 3166 digram)
3592VGBBritish Virgin Islands (ISO 3166 trigram)
3593VH1Video Hits One
3594VHFVery High Frequency
3595VIAVersatile Interface Adapter
3596VIDSVisual Information Display System
3597VII7 (in Roman numerals)
3598VIII8 (in Roman numerals)
3599VIN(i/a) Vehicle Identification Number (ISO 3779)
3600VIPVery Important Person
3601VISCIIVIetnamese Standard Code for Information Interchange
3602VITVellore Institute of Technology
3603VIVOVideo In Video Out
3604VJVideo Jockey
3605VLADVertical Line Array DIFAR
3606VLBAVery Long Baseline Array
3607VLFVery Low Frequency
3608VLIWVery Long Instruction Word
3609VLPFCVentroLateral PreFrontal Cortex
3610VLPMCVentroLateral PreMotor Cortex
3611VLSIVery-large-scale integration
3612VMVietnam (FIPS 10-4 country code)
3613VMFMarine Fighting Squadron of the United States Marine Corps
3614VMFVariable Message Format
3615VMNVentroMedial Nucleus (neurophysiology)
3616VNVietnam (ISO 3166 digram)
3617VNIRVisible and Near InfraRed
3618VNMVietnam (ISO 3166 trigram)
3619VNSsee entry
3620VOAVoice of America
3621VOIPVoice Over Internet Protocol
3622VOLTVisual OpenType Layout Tool
3623VONVictorian Order of Nurses
3624VORVoice of Russia
3625VOXVoice Operated oscillator
3626VPOTUSVice President of the United States
3627VPNVirtual Private Network
3628VRVirtual Reality
3629VRSGVirtual Reality Scene Generator
3630VSHORADVery Short Range Air Defence
3631VSOVoluntary Services Overseas
3632VSRVery Special Relativity
3633VTCVideo Tele-Conference
3634VTECVariable valve Timing and Electronic lift Control
3635VTOLVertical Take-Off & Landing
3636VUBVrije Universiteit Brussel (Belgian university)
3637VUTVanuatu (ISO 3166 trigram)
3638VVAFVietnam Veterans of America Foundation
3639VWVolkswagen
3640VZVerizon Communications (NYSE code)
3641W3CWorld Wide Web Consortium
3642WAACWomen's Army Auxiliary Corps (Britain) (World War I UK)
3643WAAFWomen's Auxiliary Air Force (World War II UK)
3644WACCWeighted Average Cost of Capital (accounting)
3645WACSWhat-A-Cartoon! Show
3646WADWeapons Alert Designator
3647WAGGGSWorld Association of Girl Guides and Girl Scouts
3648WALsee entry
3649WANWide area network
3650WAPWireless Application Protocol
3651WAPIMAWhat a pain in my ass
3652WARWith All Respect
3653WAsPShort form of WAAAAP (Wind Atlas Analysis and Application Program)
3654WAYPWhite And Yellow Pages
3655WbWeber
3656WBCWorld Boxing Council
3657WBEWork Breakdown Element
3658WBOWorld Boxing Organization
3659WCBOWorld Chess Boxing Organisation
3660WCBPWorld Center for Birds of Prey
3661WCLWorld Confederation of Labour
3662WCWWorld Championship Wrestling
3663WDINWildlife Disease Information Node
3664WDWRWalt Disney World Resort
3665WEBSWeapon Effectiveness Battle Simulation
3666WECWorld Extreme Cagefighting
3667WEEEWaste Electrical and Electronic Equipment
3668WEFWorld Economic Forum
3669WEMWest Edmonton Mall
3670WEUWestern European Union
3671WEZWeapon Engagement Zone
3672WFWallis and Futuna Islands (ISO 3166 digram)
3673WFCWomen's Forage Corps (World War II UK)
3674WFDWeapon of Focused Destruction
3675WFFWallops Flight Facility
3676WFIWater for Injection
3677WFHWorking from home
3678WFPWorld Food Program
3679WFZWeapons Free Zone
3680WHWehrmacht Heer (German World War II army vehicle licence plate code)
3681WHAMWisconsin Hydrogen-Alpha Mapping (telescope)
3682WHIWomen's Health Initiative
3683WHIPWalks plus hits per inning pitched
3684WHOWorld Health Organisation
3685WHS(U.S.) Washington Headquarters Services
3686WIIFMWhat's in it for me?
3687WIPWork In Progress
3688WIPOWorld Intellectual Property Organization
3689WIPP[Nuclear] Waste Isolation Pilot Plant
3690WIYNWisconsin Indiana Yale NOAO telescope consortium
3691WKYPWill Keep You Posted
3692WLWehrmacht Luftwaffe (German World War II air force vehicle licence plate code)
3693WLBWomen's Land Brigade (World War II Canada)
3694WLFWallis and Futuna Islands (ISO 3166 trigram)
3695WLOGWithout Loss Of Generality (see WOLOG)
3696WMWehrmacht Marine (German World War II navy vehicle licence plate code)
3697WMANUSWest Midlands Area National Union of Students
3698WMDWorld Movement for Democracy
3699WMIWildlife Management Institute
3700WMOWorld Meteorological Organization
3701WNAWorld Nuclear Association
3702WNFWill Not Fix
3703WNITWomen's National Invitation Tournament
3704WNWWest North-West
3705WOWarrant Officer
3706WOFWidth of Fabric
3707WOFTWaste Of Fucking Time
3708WOFTAMWaste Of Fucking Time And Money
3709WOIWheels Of Italy
3710WOMWrite Only Memory
3711WOSWilson Ornithological Society
3712WOTWaste Of Time
3713WPWhite Phosphorus (ammunition)
3714WPBWar Production Board during World War II
3715WPEWorld Pork Expo
3716WPKWider Peacekeeping
3717WRWide Receiver (football)
3718WRACWomen's Royal Army Corps (World War II UK)
3719WRAIRWalter Reed Army Institute of Research
3720WRBWWRMWe Best What We Most
3721WRCWorld Rally Championship
3722WRCWorld Religions Conference
3723WRNGWarning
3724WRSWorldwide Reference System
3725WRTNHS Workforce Review Team
3726WRTThe Linksys routers whose model name start with 'WRT'
3727WRTThird party firmware for the Linksys WRT routers and compatible models from other vendors.
3728WRTWeb Runtime (WRT) is a portable application framework developed by Nokia that allows the creation of widgets on the S60 Platform.
3729WRTWireless Receiver/Transmitter ( computer networks/IT )
3730WRTWireless Ronin Technologies (digital signage)
3731WRTWorld Rally Team
3732WRTWriter Response Theory
3733WSCWeapon System Catalogue
3734WSDLWeb Services Description Language
3735WSJ(The) Wall Street Journal
3736WSROCWestern Sydney Regional Organisation of Councils
3737WSSMWinchester Super Short Magnum (family of rifle cartridges)
3738WSTCWomen Signallers Territorial Corps (World War II UK)
3739WSWWest South-West
3740WTCWorld Trade Center
3741WTFWhat the fuck?; also What a Terrible Failure (android)
3742WTFHWhat The Fucking Hell
3743WTHWhat the Hell
3744WTOWorld Trade Organization
3745WUBU2What you been up to
3746WVWest Virginia (postal symbol)
3747WVAWorld Veterinary Association
3748WVIACWest Virginia Intercollegiate Athletic Conference
3749WVRWomen's Volunteer Reserve (World War II UK)
3750WVSCWomen's Volunteer Service Corps (World War II Canada)
3751WVUWest Virginia University
3752WWsee entry
3753WWEWorld Wrestling Entertainment
3754WWIWorld War I
3755WWIIWorld War II
3756WWIIIWorld War III
3757WWJDWhat would Jesus do?
3758WWSWheaton Warrenville South High School
3759WWWFWorld Wide Wrestling Federation
3760WXOWeather [Executive] Officer
3761WYWyoming (postal symbol)
3762WZSwaziland (FIPS 10-4 country code)
3763XBMLeXtended Business Modelling Language
3764XCNinety (in Roman numerals)
3765XCBLXML Common Business Library
3766XDUsed in chatrooms or email for smiley face. X is the eyes; squinted D is the mouth; XD.
3767XeXenon
3768XFAXML Forms Architecture
3769XFCXtreme Fighting Championships
3770XFDFighter aircraft made by Douglas
3771XfeX File Explorer
3772XFFX-Forwarded-For
3773XFGExfoliation glaucoma
3774XFRAutomobile made by Jaguar
3775XFTX FreeType interface library
3776XGAutomobile made by Hyundai
3777XGAExtended Graphics Array
3778XGPExtreme Game Player
3779XHTMLeXtensible Hypertext Markup Language
3780XIEleven (in Roman numerals)
3781XIITwelve (in Roman numerals)
3782XIIIThirteen (in Roman numerals)
3783XIVFourteen (in Roman numerals)
3784XIXNineteen (in Roman numerals)
3785XJSAutomobile made by Jaguar
3786XKBX keyboard extension
3787XKEAutomobile made by Jaguar
3788XKRAutomobile made by Jaguar
3789XMLeXtensible Markup Language
3790XMSFeXtensible Modelling and Simulation Framework
3791XNAX-No-Archive,Xeno Nucleic Acid
3792XNCX Northern Captain
3793XNUX is Not Unix
3794XPeXperience Point (role-playing games)
3795XQJXQuery API for Java™
3796XRAYX-Ray
3797XRMLeXtensible Rights Markup Language
3798XSXiaolin Showdown
3799XSLeXtensible Style Language
3800XTMHeXtreme Technology Multiprocessor Hyperlanguage
3801XULXML User Interface Language
3802XVFifteen (in Roman numerals)
3803XVISixteen (in Roman numerals)
3804XVIISeventeen (in Roman numerals)
3805XVIIIEighteen (in Roman numerals)
3806XWFXcitement Wrestling Federation
3807XXTwenty (in Roman numerals)
3808XylXylobium
3809XZNTriple square screw driver
3810yYocto-
3811Y2KYear Two Thousand
3812yAYoctoampere
3813YaYottayear
3814YaBPrYet another Brother Pat rant
3815YABSLAGYet another boy singing like a girl
3816YACYouth-Adult Committee
3817YAFLAYet Another Five Letter Abbreviation
3818YAPYoung Aspiring Professional
3819YBYoucef Benzouada (Southern Algerian name)
3820YbYtterbium
3821yCYoctocoulomb
3822YCYottacoulomb
3823YDSYosemite Decimal System (climbing)
3824YEYemen (ISO 3166 digram)
3825YEMYemen (ISO 3166 trigram)
3826yFYoctofarad
3827YFYottafarad
3828ygYoctogram
3829YgYottagram
3830YGCOYamaneko Group of Comet Observers
3831YgoYu-Gi-Oh!
3832yHYoctohenry
3833YHYottahenry
3834YHBTYou Have Been Trolled
3835YHIIYou Have It Inside
3836YHSYa Hoor sur!
3837YiYobi
3838YippieYouth International Party + suffix
3839yJYoctojoule
3840YJYottajoule
3841yKYoctokelvin
3842YKYottakelvin
3843YKYFCWYou know you're from Christchurch when (post-earthquake joke)
3844yLYoctolitre
3845YLYottalitre
3846ymYoctometre
3847YmYottametre
3848YMMDYou Make My Day
3849yNYoctonewton
3850YNYottanewton
3851YOLOYou Only Live Once
3852YPAYards per Pass Attempt (football statistic)
3853YPIOYour Problem Is Obvious
3854YPOYoung Presidents' Organization
3855ysYoctosecond
3856ySYoctosiemens
3857YsYottasecond
3858YSYottasiemens
3859YSIYoung Scots for Independence
3860yTYoctotesla
3861YTDYear-To-Date
3862YTMYield to Maturity
3863YTSYouth Training Scheme
3864YTTYoshi Topsy-Turvy
3865YuppieYoung Urban Professional + suffix
3866yVYoctovolt
3867YVYottavolt
3868yWYoctowatt
3869YWYottawatt
3870YYHYuYu Hakusho
3871zZepto
3872ZZetta
3873zAZeptoampere
3874ZAFSouth Africa (ISO 3166 trigram)
3875ZAMSZero age main sequence
3876ZASZylinder Abschaltung System
3877ZBTZero-Balance Transfer (accounting)
3878zCZeptocoulomb
3879ZCZettacoulomb
3880ZCM(n) ZENworks Configuration Management
3881ZCMKZone Control Master Key
3882ZCUZimbabwe Cricket Union
3883\aAtto-