PowerShell/Data/Abbr/general.csv

1	ABBR	MEANING
2	0D	obvious deed
3	1AM	Air Mechanic 1st Class
4	1D	One-Dimensional
5	2AM	Air Mechanic 2nd Class
6	2D	Two-dimensional
7	2LA	Two Letter Acronym
8	2Lt	2nd Lieutenant
9	3AM	Air Mechanic 3rd Class
10	3D	Three-Dimensional
11	3G	Third-generation mobile telephone system
12	3i	Investors In Industry (venture capitalists)
13	3M	Minnesota Mining and Manufacturing Company
14	4G	Fourth-generation mobile telephone system
15	4WD	Four-wheel drive
16	5D	Five-Dimensional
17	6D	Six-Dimensional
18	7D	Seven-Dimensional
19	8D	Eight-Dimensional
20	9D	Nine-Dimensional
21	A	Ampere
22	A10	Atlantic 10 Conference
23	A1C	Airman First Class
24	A4	European standard office paper size
25	aA	Attoampere
26	AAA	administration,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)
27	AAAS	American Association for the Advancement of Science
28	AAAV	Advanced Amphibious Assault Vehicle
29	AADAC	Alberta Alcohol and Drug Abuse Commission
30	AADD	Adult attention deficit disorder
31	AADT	annual average daily traffic
32	AAFES	Army and Air Force Exchange Service
33	AAIS	advanced airborne interceptor simulator
34	AAM	air-to-air missile
35	AAMOF	as a matter of fact
36	AAN	American Academy of Nursing
37	AANEAS	Anglo-Australian Near-Earth Asteroid Survey
38	AAODL	Atmospheric Aerosols and Optics Data Library
39	AAPC	Accounting and Auditing Policy Committee
40	AARP	American Association of Retired Persons (now officially known only by the initials)
41	AASPEM	advanced air-to-air system performance evaluation model
42	AAT	Australian Antarctic Territory
43	AAV	Amphibious Assault Vehicle
44	AAWC	anti-air warfare commander
45	AB	Able Seaman (both the rank and the occupation),Alberta (postal symbol)
46	ABB	ASEA Brown Boveri (Swiss-Swedish multinational company)
47	ABBA	Agnetha,Benny,Björn,Anni-Frid (Swedish pop group)
48	ABC	the first three letters of the Latin script known as the alphabet
49	ABC	abstinence, be faithful, condoms
50	ABC	Active Body Control
51	ABC	airway, breathing, circulation
52	ABC	Alcoholic Beverage Commission
53	ABC	alien big cat
54	ABC	always be careful
55	ABC	American-born Chinese
56	ABC	anti-lock brake controller
57	ABC	atomic, biological, chemical
58	ABCS	(U.S.) Army Battle Command System
59	ABET	Accreditation Board for Engineering and Technology
60	ABFIST	Advanced Bradley Full Crew Interactive Skills Trainer
61	ABGI	Addington-Barker Group International
62	ABIN	Agência Brasileira de Inteligência (Brazilian Intelligence Agency)
63	ABL	American Basketball League
64	ABLE	AirBorne Law Enforcement (police air support unit)
65	ABMC	American Battle Monuments Commission
66	ABN	Australian Business Number (a number issued by the Australian government as registration of a business and used for taxation purposes)
67	ABPI	Association of the British Pharmaceutical Industry
68	ABRSM	Associated Board of the Royal Schools of Music
69	ABS	anti-lock braking system
70	ABSA	Amalgamated Banks of South Africa
71	ABSTRIPS	abstraction-based STRIPS
72	ABV	Alcohol by volume
73	ABW	Aruba (ISO 3166 trigram)
74	Ac	Actinium
75	AC	Adriamycin-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
76	aC	Attocoulomb
77	AC1	Aircraftman 1st Class
78	AC2	Aircraftman 2nd Class
79	ACA	Affordable Care Act,shorthand for the Patient Protection and Affordable Care Act,commonly called 'Obamacare',Airspace Control Authority,Airspace Co-ordination Area,A Current Affair
80	ACARS	Aircraft Communications Addressing and Reporting System
81	ACB	Asociación de Clubes de Baloncesto (Spanish for 'Association of Basketball Clubs')
82	ACCAC	Awdurdod Cymwysterau,Cwricwlwm ac Asesu Cymru (Qualifications,Curriculum and Assessment Authority for Wales)
83	ACCD	American Coalition of Citizens with Disabilities
84	ACCS	Air Communications and Control Squadron
85	ACDA	Arms Control & Disarmament Agency
86	ACDC	Alternating Current Direct Current,the name of an Australian rock music band,a term for a bisexual person,A/Cdre,Air Commodore
87	ACDT	Apple Certified Desktop Technician,Australian Central Daylight Time
88	ACES	Aerolíneas Centrales de Colombia (Spanish,'Central Colombian Airlines'),Auxiliary Campus Enterprises and Services of Alfred State College
89	ACF	Administration for Children and Families,American Car and Foundry,American Culinary Federation
90	ACHT	Average Call Hold Time
91	ACINT	Acoustic Intelligence
92	ACK	Acknowledge (telecommunications; cf. NAK)
93	ACL	Access Control List,Anterior cruciate ligament; the initialism can also refer to an injury to this ligament.,Atlantic Coast Line Railroad
94	ACLJ	American Center for Law and Justice
95	ACLOS	Automatic CLOS (missile control system)
96	ACLS	American Council of Learned Societies
97	ACLU	American Civil Liberties Union,American Communist Lawyers Union (pejorative slang for the above)
98	ACM	many,including Association for Computing Machinery; see entry
99	ACMC	(U.S.) Assistant Commandant of the Marine Corps
100	ACN	Airborne Communications Node,Australian Company Number (number issued by the Australian government as registration of a limited liability company)
101	ACNA	Anglican Church in North America
102	ACO	Airspace Control Order
103	ACOBA	Advisory Committee on Business Appointments
104	ACOG	American College of Obstetricians and Gynecologists
105	ACOM	(U.S.) Atlantic Command
106	ACORN	Association of Community Organizations for Reform Now
107	ACP	African,Caribbean and Pacific Group of States,Air Control Point
108	ACR	Advanced Concepts and Requirements
109	ACRI	African Crisis Initiative
110	ACRT	Advanced Concepts Research Tool simulator
111	ACS	Affiliated Computer Services (NYSE ACS),Alaska Communications Service,American Cancer Society,American Chemical Society,Association of Caribbean States,Australian Computer Society
112	ACSC	Army Command and Staff College (various nations)
113	ACST	American Cooperative School of Tunis
114	ACST	Australian Central Standard Time
115	ACT	Adaptive Control of Thought (cognitive model),American College Test (ing Program),Australian Capital Territory (also postal symbol),ACT UP,AIDS Coalition to Unleash Power
116	ACTD	Advanced Concept Technology Demonstration
117	ACTF	(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)
118	ACTU	Australian Council of Trade Unions
119	ACU	American Conservative Union
120	ACUF	Advisory Committee on Undersea Features,American Conservative Union Foundation
121	AD	Anno Domini (Latin for 'In the year of our Lord')
122	ADA	Air Defence Artillery,American Dental Association,Assistant District Attorney,Americans with Disabilities Act (see also the similar but non-acronymic Ada programming language)
123	ADAC	Allgemeiner Deutscher Automobil-Club (German for 'General German Automobile Club')
124	ADAGE	Air Defense Air to Ground Engagement (simulation)
125	ADAP	AIDS Drug Assistance Program
126	ADAS	Asiago-DLR Asteroid Survey
127	ADAT	Alesis Digital Audio Tape (recording format)
128	ADATS	Agricultural Development and Training Society,Air Defence Anti-Tank System,Australian Defence Air Traffic System
129	ADB	Asian Development Bank
130	ADC	Aide De Camp,U.S. Air Defense Command (1946-1992),Apple Display Connector,Program Against Digital Counterfeiting of Currency
131	ADD	Analog Digital Digital (CD quality),Attention-Deficit Disorder,Administration on Developmental Disabilities
132	ADDIE	Analyze Design Develop Implement and Evaluate
133	ADDNS	Advanced Deployable Day/Night Simulation
134	ADGB	Air Defence of Great Britain
135	ADHD	Attention-Deficit Hyperactivity Disorder
136	ADHS	Attention-Deficit Hyperactivity Syndrome
137	ADI	Acceptable/Allowable Daily Intake
138	ADL	Anti-Defamation League
139	ADM	Administrative,,Admiral,and the U.S. Public Health Service Commissioned Corps,Archer Daniels Midland,Assistant Deputy Minister
140	ADOA	Air Defence Operations Area
141	ADP	Adenosine DiPhosphate,Army Doctrine Publication (UK,Canada,Australia),Automatic/Automated Data Processing
142	ADRG	Arc-second Raster Chart (ARC) Digitized Raster Graphics
143	ADS	Active Denial System,Astrophysics Data System,Attention Deficit Syndrome
144	ADSR	Attack,Decay,Sustain,Release (sound envelope specification)
145	ADT	Atlantic Daylight Time (UTC−3 hours)
146	ADTB	Army Doctrine and Training Bulletin
147	ADW	Air Defence Warning
148	AE	Armed 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
149	AEDT	Australian Eastern Daylight Time
150	AEF	American Expeditionary Force
151	AEGIS	Airborne Early warning Ground environment Interface Segment (fake etymology)
152	AESR	Aeronautical Equipment Service Record
153	AEST	Australian Eastern Standard Time
154	aet	After extra time (Football)
155	AEW	Airborne Early Warning,Airborne Electronic Warfare
156	AF	Afghanistan (FIPS 10-4 country code; ISO 3166 digram),Air Force,As f*ck
157	aF	Attofarad
158	AFA	U.S. Air Force Academy,Asociación del Fútbol Argentino (Spanish for 'Argentine Football Association')
159	AFAIC	As Far As I'm Concerned
160	AFAICT	As Far As I Can Tell
161	AFAIK	As Far As I Know
162	AFAIR	As Far As I Remember/Recall
163	AFAM	Associazione 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
164	AFATDS	Advanced Field Artillery Tactical Data System
165	AFCEA	Armed Forces Communications and Electronics Association
166	AFDB	African Development Bank
167	AFES	Automatic Fire Extinguishing System
168	AFG	Afghanistan (ISO 3166 trigram)
169	AFI	French Territory of the Afars and Issas (ISO 3166 trigram; obsolete since 1977),'Agencia Federal de Investigaciónes' (México)
170	AFIST	Abrams Full Crew Interactive Skills Trainer
171	AFJ	April Fool's Joke
172	AFK	Away From Keyboard (Internet chat abbreviation)
173	AFLAC	American Family Life Assurance Company of Columbus
174	AFO	Association of Field Ornithologists
175	AFOSR	U.S. Air Force Office of Scientific Research
176	AFP	Agence France-Presse (French,'French Press Agency'), Australian Federal Police
177	AFQT	Armed Forces Qualification Test
178	AFRC	Air Force Reserve Command
179	AFRL	Air Force Research Laboratory
180	AFROTC	Air Force Reserve Officer Training Corps
181	AFRRI	(U.S.) Armed Forces Radiobiology Research Institute
182	AFRTS	Armed Forces Radio and Television Service
183	AFSC	U.S. Air Force Staff College (obsolete; replaced with JFSC), U.S. Air Force Systems Command
184	AFSCN	U.S. Air Force Satellite Control Network
185	AFSPC	Air Force Space Command
186	AFT	American Farmland Trust
187	AFV	armoured fighting vehicle
188	AG	air gunner,Aktiengesellschaft (German,'incorporated'),Algeria (FIPS 10-4 country code),Antigua and Barbuda (ISO 3166 digram),Assemblies of God
189	ag	Attogram
190	Ag	Silver (Latin for 'argentum')
191	AGA	AB Gas-accumulator ('ah-gah',Swedish company),Advanced Graphics Architecture
192	AGARD	Advisory Group for Aerospace Research and Development
193	AGARDograph	Advanced Guidance for Alliance Research and Development publication
194	AGASA	Akeno Giant Air Shower Array (cosmic ray detector)
195	AGB	Internal Nintendo initialism (Advanced Game Boy) for Game Boy Advance
196	AGC	Adjutant General's Corps (British Army)
197	AGDC	Australian Game Developers' Conference
198	AGI	Auxiliary Group Intelligence
199	AGM	Annual General Meeting
200	AGN	Active Galactic Nucleus
201	AGO	Angola (ISO 3166 trigram)
202	AGP	Accelerated Graphics Port
203	AGRICOLA	Agriculture Online Access
204	AGS	Alaska Ground Station (LandSat)
205	AGTS	Advanced Gunnery Training System
206	AGU	American Geophysical Union
207	AGW	Autonomous Guided Weapon
208	Ah	Ampere-hour
209	AH	Attack Helicopter
210	aH	Attohenry
211	AHA	American Heart Association
212	AHCPR	Agency for Health Care Policy and Research (obsolete; replaced with AHRQ)
213	AHEC	Australian Health Ethics Committee
214	AHPCRC	Army High Performance Computing Research Center
215	AHQ	Air Headquarters
216	AHRQ	Agency for Healthcare Research and Quality
217	AHS	American Housing Survey
218	AI	Air Interdiction,Amnesty International,Artificial Insemination,Artificial Intelligence,Anguilla (ISO 3166 digram)
219	AIA	Aerospace Industries Association,American Institute of Architects,Anguilla (ISO 3166 trigram)
220	AIAA	American Institute of Aeronautics and Astronautics
221	AIC	African Independent Church,Animal Identification Coordinator
222	AICD	Australian Institute of Company Directors
223	AICMFP	And I Claim My Five Pounds
224	AID	U.S. Agency for International Development
225	AIDS	Acquired Immune Deficiency Syndrome
226	AIM	Australian Institute of Management
227	AIMP	Aurora Incremental Modernization Project
228	AIPAC	American Israel Public Affairs Committee
229	AIR	Aircraft Inventory Record
230	AIRFA	American Indian Religious Freedom Act
231	AIRS	Aerometric Information Retrieval System (obsolete; replaced with AFS)
232	AIS	Australian Institute of Sport,Automatic Identification System
233	AISB	(British Society for the Study of) Artificial Intelligence and the Simulation of Behaviour
234	aJ	Attojoule
235	AJ	Azerbaijan (FIPS 10-4 country code)
236	Ajax	Asynchronous JavaScript And XML
237	AJD	Astronomical Julian day
238	AJP	Allied Joint Publication
239	AJPW	All Japan Pro Wrestling
240	AK	Alaska (postal symbol)
241	aK	Attokelvin
242	AKA	Above knee amputation (orthopaedic usage)
243	AKDT	Alaska Standard Daylight Saving Time (UTC−8 hours)
244	AKP	Adalet ve Kalkınma Partisi (Turkish,'Justice and Development Party')
245	AKST	Alaska Standard Time (UTC−9 hours)
246	AL	Alabama (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)
247	Al	Aluminium
248	aL	Attolitre
249	ALA	Åland Islands (ISO 3166 trigram)
250	ALAP	As Long/Late As Possible
251	ALARM	Air-Launched Anti-Radar Missile
252	ALB	Albania (ISO 3166 trigram)
253	ALD	Accounting Line Designator (nuclear weapon targeting)
254	ALERT	Advanced Linked Extended Reconnaissance and Targeting,Attack and Launch Early Reporting to Theatre
255	ALF	Africa Leadership Forum,Alien Life Form (cf. ALF (TV series)),Animal Liberation Front
256	ALG	Algeria (IOC and FIFA trigram,but not ISO 3166)
257	ALGOL	ALGOrithmic Language
258	ALPA	Air Line Pilots Association
259	ALS	Amyotrophic Lateral Sclerosis
260	ALSHS	Abraham Low Self-Help Systems
261	ALSP	Aggregate Level Simulation Protocol
262	ALTE	Association of Language Testers in Europe
263	Am	Americium
264	AM	Amplitude Modulation and Ante Meridiem; see entry,Armenia (FIPS 10-4 country code; ISO 3166 digram)
265	AM1	Airman 1st class
266	AMCB	U.S. Army/Marine Corps Board
267	AMFOM	Advanced Missile Fly Out Model
268	AMFR	Age-specific Marital Fertility Rate,Amplitude Modulation Following Response
269	AMFRS	Advanced Multi-Function Radio Frequency System,Automatic Multisensor Feature-based Recognition System
270	AML	Acute Myeloid Leukaemia
271	AMLCD	Active Matrix Liquid Crystal Display
272	AMLO	Andrés Manuel López Obrador (Mexican politician),Anti-Money Laundering Office (Thailand government agency)
273	AMO	Atlantic Multidecadal Oscillation
274	AMOLED	Active-matrix organic light-emitting diode
275	AMOS	Advanced MOrtar System,Air Force Maui Optical and Supercomputing observatory
276	AMP	Adenosine MonoPhosphate,Automated Mission Planner
277	AMRAAM	Advanced Medium-Range Air-to-Air Missile
278	AMRDEC	U.S. Aviation & Missile Research,Development,& Engineering Center
279	AMS	Agriculture Marketing Service,American Mathematical Society
280	AMSAA	U.S. Army Materiel Systems Analysis Activity
281	AMSO	U.S. Army Model and Simulation Office
282	AMSU	Advanced Microwave Sounding Unit
283	AMTE	UK Admiralty Marine Technology Establishment (1977-1984)
284	AN	Andorra (FIPS 10-4 country code),Netherlands Antilles (ISO 3166 digram)
285	aN	Attonewton
286	ANA	Administration for Native Americans,Afghan National Army,All Nippon Airways,Anti-Nuclear Anti-body,Australian National Airways,Australian Natives' Association
287	ANC	African National Congress
288	AND	Andorra (ISO 3166 trigram)
289	ANFO	Ammonium nitrate/fuel oil (explosive)
290	ANGLiCo	Air/Naval Gunfire Liaison Company
291	ANL	Argonne National Laboratory
292	ANM	Acoustic Noise Monitor
293	ANOVA	ANalysis Of VAriance
294	ANS	Applied and Natural Sciences
295	ANSI	American National Standards Institute
296	ANT	Netherlands Antilles (ISO 3166 trigram),Antigua and Barbuda (IOC trigram,but not ISO 3166 or FIFA)
297	ANTM	America's Next Top Model
298	ANTY	Acronyms,No Thank You
299	ANWR	Arctic National Wildlife Refuge /ˈænwɑr/
300	ANZ	Australia and New Zealand Banking Group
301	ANZAC	Australian and New Zealand Army Corps
302	AO	Angola (FIPS 10-4 country code; ISO 3166 digram),Approach Officer (submarine),Area of Operations
303	AOC	Air Operations Centre,Air Officer Commanding
304	AOD	Adrenalin O.D. (punk rock band)
305	AOI	Angle Of Incidence (Arab Organization for Industrialization)
306	AOL	America OnLine
307	AOR	Area of Responsibility
308	AOSTH	Adventures of Sonic the Hedgehog
309	AOTS	Attack of the Show!
310	AOU	American Ornithologists' Union
311	AP	Advanced Placement,Air Publication,Andhra Pradesh (Indian state code),Armed Forces Pacific (postal symbol),Associated Press,Auto Pilot
312	APB	All Points Bulletin (police jargon)
313	APEC	Asia Pacific Economic Cooperation
314	APEDS	AMSAA Performance Estimates Data System
315	APEX	Applied Physics Express
316	APHA	American Public Health Association
317	APHIS	Animal and Plant Health Inspection Service
318	APL	Acute Promyeloid Leukaemia,Anti-Personnel Landmine,Applied Physics Laboratory (Johns Hopkins University)
319	APOD	Aerial Port (Airport) Of Debarkation
320	APOE	Aerial Port (Airport) Of Embarkation
321	APOLLO	Apache Point Observatory Lunar Laser-ranging Operation
322	APP	Allied Procedural Publication
323	APR	Annual Percentage Rate
324	AQIM	Al-Qaeda in the Islamic Maghreb
325	Ar	Argon
326	ARAG	Advanced Research and Assessment Group
327	ARB	Administrative Review Board
328	ARBA	Army Review Boards Agency
329	ARCA	Automobile Racing Club of America
330	ARCENT	United States Army Central Command
331	ARDA	Advanced Research and Development Activity (became DTO 2006)
332	ARF	ASEAN Regional Forum
333	ARG	Argentina (ISO 3166 trigram)
334	ARH	Armed Reconnaissance Helicopter
335	ARNet	Acquisition Reform Network
336	ARP	Applied Research Programme
337	ARPA	Advanced Research Projects Agency
338	ARRC	ACE Rapid Reaction Corps
339	ARRF	Allied Rapid Reaction Force
340	ARRL	American Radio Relay League
341	ARSC	Arctic Region Supercomputing Center
342	ARSPACE	U.S. Army Space Command
343	ARTCC	Air Route Traffic Control Center
344	ARWG	Army Research Working Group
345	AS	ActionScript
346	AS	American Samoa (postal symbol; ISO 3166 digram),Australia (FIPS 10-4 country code),Assam / Asom (Indian state code)
347	As	Arsenic
348	aS	Attosiemens
349	ASA	AcetylSalicylic Acid,American Standards Association,Army Security Agency,Atlantic Southeast Airlines
350	ASAP	As Soon As Possible
351	ASARS	Advanced Synthetic Aperture Radar System,Airborne Search and Rescue System
352	asbl	association sans but lucratif (French 'Non-profit organisation')
353	ASBO	Anti-Social Behaviour Order
354	ASCAP	American Society of Composers,Authors,and Publishers
355	ASCC	Army Service Component Commander,Automatic Sequence Controlled Calculator,Air Standardization Coordinating Committee
356	ASCII	American Standard Code for Information Interchange
357	ASD	(U.S.) Assistant Secretary of Defense,autism spectrum disorder
358	ASDIC	Allied Submarine Detection Investigation Committee (Sonar)
359	ASEAN	Association of Southeast Asian Nations
360	ASFAR	Americans for a Society Free of Age Restrictions
361	ASG	Area Support Group
362	ASIC	Australian Securities and Investments Commission,Aviation Security Identification Card
363	ASICS	Anima sana in corpore sano (Latin for 'A sound mind in a sound body') (athletic shoe manufacturer)
364	ASIO	Australian Security Intelligence Organisation,Audio stream input output
365	ASIP	Advanced System Improvement Program,Army Stationing and Installation Plan,Application-specific instruction-set processor
366	ASL	Above Sea Level,American Sign Language (also known as Ameslan),'Age,Sex,Location?' (Internet slang)
367	ASM	Air-to-Surface Missile,American Samoa (ISO 3166 trigram),American Society for Metals,American Society for Microbiology
368	ASMB	American Society for Matrix Biology,Adult Swim Message Board
369	ASME	American Society of Mechanical Engineers,American Society of Magazine ors
370	ASMP	Air-Sol Moyenne Portée missile (French 'Medium-range air to surface'),Asymmetric multiprocessing
371	ASN	Associate of Science in Nursing
372	ASOC	Air 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
373	ASP	Active 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
374	ASPI	Australian Strategic Policy Institute
375	ASR	Alkali-silica reaction,Anti Slip Regulation
376	ASRAAM	Advanced Short-Range Air-to-Air Missile
377	ASSC	Association for the Scientific Study of Consciousness
378	AST	Atlantic Standard Time (UTC−4 hours)
379	ASTIA	Armed Services Technical Information Agency
380	ASTM	American Society for Testing and Materials
381	ASTREA	Aerial Support To Regional Enforcement Agencies (sheriff's air support unit)
382	ASUW	AntiSUrface Warfare
383	ASVAB	Armed Services Vocational Aptitude Battery(taken by juniors in high school in the USA)
384	ASVEL	Association Sportive Villeurbanne Éveil Lyonnais (Association Sportive is French for 'Sporting Association'; the club was founded through the merger of AS Villeurbanne and Éveil Lyonnais)
385	ASW	AntiSubmarine Warfare
386	ASWORG	(U.S.) AntiSubmarine Warfare Operations Research Group
387	ASX	Advanced Stream Redirector,Australian Securities Exchange
388	AT	Anti-Tank,Ashmore and Cartier Islands (FIPS 10-4 territory code),Austria (ISO 3166 digram),Advanced Technology (IBM Personal Computer/AT)
389	At	Astatine
390	aT	Attotesla
391	ATA	Advanced Technology Attachment (IBM Personal Computer),Afghan Transitional Authority,Allen Telescope Array,Antarctica (ISO 3166 trigram)
392	ATAC	Air Transportable Acoustic Communications
393	ATAPI	Advanced Technology Attachment Packet Interface
394	ATAT	Aiken Tactical Airsoft Team / Star Wars vehicle
395	ATB	Active Time Battle,British Antarctic Territory (ISO 3166 trigram; merged with AQ in 1979)
396	ATC	Air Training Corps, U.S. Air Transport Command (1942-1948), Athletic Trainer,Certified
397	ATESS	Aerospace and Telecommunications Engineering Support Squadron
398	ATF	French Southern Territories (ISO 3166 trigram),(U.S.) Bureau of Alcohol,Tobacco,Firearms and Explosives
399	ATG	Antigua and Barbuda (ISO 3166 and FIFA trigram)
400	ATGM	Anti-Tank Guided Missile
401	ATGW	Anti-Tank Guided Weapon
402	ATK	Attack
403	ATL	Atlanta,Georgia,the largest city and capital of Georgia
404	ATLAS	All-Terrain Lifter Army System,Assessment Tool for LAnd Systems
405	ATM	At The Moment
406	ATN	Dronning Maud Land (ISO 3166 trigram; merged with AQ in 1983)
407	ATO	Air Tasking Order,Australian Taxation Office
408	ATP	Adenosine TriPhosphate,Allied Tactical Publication,Ammunition Transfer Point
409	ATSD	(U.S.) Assistant Secretary of Defense
410	ATSDR	Agency for Toxic Substances and Disease Registry
411	ATV	All-Terrain Vehicle
412	ATWA	Air,Trees,Water,Animals
413	AU	African Union (was OAU before 2000),American University,Astronomical Unit,Australia (ISO 3166 digram),Austria (FIPS 10-4 country code)
414	Au	Gold (Latin 'Aurum')
415	AUC	Ab Urbe Condita / Anno Urbis Conditae (Latin for '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)
416	AUS	Australia (ISO 3166 trigram)
417	AUSCANNZUKUS	Australia,Canada,New Zealand,United Kingdom,United States (security designation)
418	Auslan	Australian Sign Language
419	AUT	Austria (ISO 3166 trigram)
420	AUTL	Army Universal Task List
421	AV	Anguilla (FIPS 10-4 territory code),Audio-Visual,Aviation
422	Av	Aperture value (photographic mode)
423	aV	Attovolt
424	AVA	American Viticultural Area
425	AVB	Audio Video Bridging
426	AVDLR	Aviation Depot Level Repair
427	AVGP	Armoured Vehicle, General Purpose
428	AVIM	Aviation Intermediate Maintenance
429	AVLB	Armoured Vehicle Launched Body
430	AVM	Air Vice-Marshal, Arteriovenous malformation
431	AVO	Apprehended Violence Order
432	AVP	Arubaanse Volkspartij
433	AVP	Association of Volleyball Professionals
434	AVRE	Armoured Vehicle Royal Engineers
435	AVTB	Armoured Vehicle Test Bed,Aviation Test Bed
436	AVUM	Aviation Unit Maintenance
437	AVVO	Acute Vaginal Venereal Outbreak
438	AW	Aruba (ISO 3166 digram)
439	aW	Attowatt
440	AWA	American Wrestling Association
441	AWC	Air Warfare Centre
442	AWD	All Wheel Drive
443	AWE	Advanced Warfighting Experiment
444	AWP	Awaiting Parts (SM&R code)
445	AWSIM	Air Warfare SIMulation
446	AWST	Australian Western Standard Time
447	AWW	Above Water Warfare
448	AX	Åland Islands (ISO 3166 digram)
449	AXP	Ambulance eXchange Point
450	AY	Antarctica (FIPS 10-4 territory code)
451	AYBABTU	All Your Base Are Belong To Us
452	AYU	As Yet Unknown
453	AZ	Arizona (postal symbol),Azerbaijan (ISO 3166 digram),Alkmaar Zaanstreek (Dutch football club)
454	AZE	Azerbaijan (ISO 3166 trigram)
455	AZUR	Actions en zone urbaine (French for: Urban Operations)
456	BAR	Barbados (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]
457	BB	Barbados (ISO 3166 digram; FIPS 10-4 country code),Boys' Brigade (Christian youth organization),Brigitte Bardot (actress),Bumblebee
458	BBB	Better Business Bureau,Blood-brain barrier
459	BBC	Breeding Bird Census,British Broadcasting Corporation,Bumper to Back of Cab (trucking measurement)
460	BBL	Be Back Later,Bird Banding Laboratory,British Basketball League
461	BBN	Bolt,Beranek and Newman
462	BBQ	Barbecue
463	BBS	Breeding 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)
464	BBYO	B'nai B'rith Youth Organization
465	BC	Before Christ,Blind Copy (in emailers),Boston College,Botswana (FIPS 10-4 country code; from Bechuanaland),British Columbia (postal symbol)
466	BCA	Bachelor of Computer Application,Black Coaches & Administrators
467	BCC	Blind Carbon Copy
468	BCCI	Bank of Credit and Commerce International,Board of Control for Cricket in India,BCD , Binary-Coded Decimal
469	BEA	Banque extérieure d'Algérie,British European Airways (ancestor of British Airways),British Electricity Authority,bel
470	BEL	Belgium (ISO 3166 trigram)
471	BEN	Benin (ISO 3166 trigram)
472	BEO	Banquet Event Order
473	BERC	Business Environmental Resource Center
474	BER	Bit Error Rate
475	BH	Bahrain (ISO 3166 digram),Belize (FIPS 10-4 country code)
476	BHR	Bahrain (ISO 3166 trigram)
477	BNF	Backus-Naur Form (computing), British National Formulary
478	BNICE	Biological,Nuclear,Incendiary,Chemical,and Explosive Agents
479	BNP	British National Party,Banque Nationale de Paris,a predecessor to today's BNP Paribas
480	BNS	Bank of Nova Scotia
481	BNSF	Burlington Northern Santa Fe (also AAR reporting mark)
482	BO	Back Orifice,Belarus (FIPS 10-4 country code),Biarritz Olympique (French rugby union club),Bolivia (ISO 3166 digram),Body odor
483	BOAC	British Overseas Airways Corporation (predecessor of British Airways)
484	BoAML	Bank of America Merrill Lynch
485	BOC	British Orthodontic Society, British Oxygen Company
486	BÖC	Blue Öyster Cult
487	BODMAS	Brackets,Orders,Division,Multiplication,Addition,Subtraction
488	BOFH	Bastard Operator From Hell
489	BOGA	Bend Over and Grab Ankles
490	BOGOF	Buy One,Get One Free
491	BOGs	Bunch of Guys
492	BOI	Balance Of Investment,Basis Of Issue
493	BOL	Bolivia (ISO 3166 trigram)
494	BOM	Base Object Model,Bill Of Materials,Block of the Month quilting term,Business opportunity meeting
495	BOPD	Barrel of Oil Per Day
496	BOS	Battlefield Operating System
497	BOT	Balance of Trade,Botswana (IOC and FIFA trigram,but not ISO 3166),Build Operate Transfer,Bank of Thailand,BP[edit]
498	BP	Battle 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
499	BPV	Battlefield Planning Visualization,Bovine papillomavirus
500	BQ	British 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)
501	BR	Brazil (ISO 3166 digram; FIPS 10-4 country code) ,Bihar (Indian state code),British Rail,Break Ranks (marching band term)
502	BRA	Brazil (ISO 3166 trigram)
503	BRAG	Bicycle Ride Across Georgia
504	BRASS	Breathe,Relax,Aim,Sight,Squeeze (acronym for using a rifle)
505	BRIC	Brazil, Russia, India, and China
506	BRICS	Brazil, Russia, India, China, and South Africa
507	BSA	Birmingham Small Arms (motorcycles company),Boy Scouts of America,Brigade Support Area
508	BSatCoP	Benjamin Sniddlegrass and the Cauldron of Penguins
509	BSE	Bovine Spongiform Encephalopathy (better known as mad cow disease)
510	BSN	Baloncesto Superior Nacional (Spanish,'National Superior Basketball'; top Puerto Rican league),Bank Simpanan Nasional (Malay,'National Savings Bank'; government-owned Malaysian bank)
511	BSNL	Bharat Sanchar Nigam Limited,Bachelor of Science in Nursing
512	BSoD	Blue Screen of Death (distinct from BSD)
513	BSP	Between-Show Promotion,Binary Space Partitioning,Board Support Package,British Standard Pipe (screw thread),Business-sponsored,Bone sialoprotein
514	BST	Binary search tree,Blended Sales Tax,Bovine somatotropin,British Summer Time
515	BSW	British Standard Whitworth (screw thread)
516	BSX	Bendigo Stock Exchange
517	BT	Baal 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
518	Bt	Baronet,Bacillus thuringiensis
519	BTO	Built To Order
520	BTP	British Transport Police
521	BTR	Bronetransporter (БТР = Бронетранспортер '(Heavy) Armoured (Personnel) Transporter')
522	BTU	British Thermal Unit
523	BTW	By The Way
524	BU	Bulgaria (FIPS 10-4 country code) -,Burma (ISO 3166 digram; obsolete since 1989)
525	BUAV	British Union for the Abolition of Vivisection
526	BUG-E	Battlefield Universal Gateway Equipment ('buggy')
527	BUNO	Bureau Number (aircraft serial number)
528	BUR	Burma (ISO 3166 trigram; obsolete since 1989)
529	BV	Background Vocals -,Battlefield Visualization ,,Bouvet Island (ISO 3166 digram; FIPS 10-4 territory code)
530	BVD	Bradley,Voorhees & Day (underwear manufacturer)
531	BVR	Beyond Visual Range
532	BVT	Bouvet Island (ISO 3166 trigram)
533	B&W	Babcock & Wilcox, Black and White, Bowers & Wilkins
534	BW	Bring Wedges (ISO digram)
535	BW	Botswana (ISO 3166 digram)
536	BWA	Botswana (ISO 3166 trigram)
537	BWARS	Bees,Wasps & Ants Recording Society
538	BWC	Biological and Toxin Weapons Convention
539	BWR	Boiling-Water Reactor
540	BX	Base eXchange
541	BY	Burundi (FIPS 10-4 country code), Belarus (ISO 3166 digram), Bavaria
542	BYOB	Bring Your Own Bottle (or beer, beverage, or booze) (multiple,but similar,meanings)
543	BYOC	Bring Your Own Computer (play on BYOB)
544	BYOF	Bring Your Own Flask
545	BYS	Byelorussian Soviet Socialist Republic (ISO 3166 trigram; obsolete since 1992)
546	BYU	Brigham Young University
547	BZ	Belize (ISO 3166 digram)
548	BZP	Benzylpiperazine
549	C	Carbon, Coulomb, One Hundred (in Roman numerals)
550	c	Centi
551	C2C	Consumer-To-Consumer electronic commerce, Cam-To-Cam internet chat
552	c2c	the British rail company formerly known as LTS Rail
553	Ca	Calcium
554	CA	California (postal symbol),Canada (FIPS 10-4 country code; ISO 3166 digram),Catalonia,Civil Affairs,Close Armour,Cocaine Anonymous,Computer Associates,Counter-Air,Cricket Australia
555	CAA	Canadian 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
556	CAAT	Campaign Against Arms Trade,Center for Alternatives to Animal Testing
557	CAC	California Association of Criminalists,Chronic Asymptomatic [Disease] Carrier
558	CACM	Central American Common Market
559	CACM	Communications of the ACM
560	CADCAM	Computer-Aided Design/Computer-Aided Manufacturing
561	CADMID	Concept,Assessment,Demonstration,Manufacture,In service,Disposal (life cycle mnemonic)
562	CADPAT	CAnadian Disruptive PATtern
563	CAE	Canadian Aviation Electronics (originally),Certificate in Advanced English
564	CAEn	Close Action Engagement (constructive simulation)
565	CAF	Central African Republic (ISO 3166 trigram),Confederation of African Football (or French Confédération Africaine de Football)
566	CAFAD	Combined Arms For Air Defence
567	CAFDE	Canadian Association of Film Distributors and Exporters,Computer Aided Federation Development Environment
568	CAFE	Corporate Average Fuel Economy standard
569	CAI	Computer Assisted Instruction
570	CAIR	Council on American-Islamic Relations
571	CALABARZON	A region in the Philippines: CAvite,LAguna,BAtangas,Rizal,queZON
572	CALL	Center for Army Lessons Learned
573	CALM	Communications,Air-interface,Long and Medium range
574	CalPERS	California Public Employees' Retirement System
575	Caltrans	California Department of Transpotation
576	CAM	Chemical Agent Monitor,Complementary and alternative medicine,Computer-Aided Manufacturing,Crassulacean acid metabolism (type of photosynthesis)
577	CAMRA	CAMpaign for Real Ale
578	CAN	Canada (ISO 3166 trigram)
579	CANDU	CANada Deuterium Uranium (nuclear reactor design)
580	Canola	Canadian oil,low acid (referring to a specific cultivar of rapeseed bred to have a low erucic acid content)
581	CAPES	CAPability Evaluation System,Combined Arms Planning and Execution System
582	CARE	Citizens 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)
583	CARMONETTE	Computerized Monte Carlo Simulation
584	CARP	Computed Air Release Point
585	CART	Championship Auto Racing Teams (now defunct)
586	CAS	Chemical Abstracts Service,Chief of the Air Staff,Close Air Support
587	CASA	Civil Aviation Safety Authority
588	CASE	Cellular ammunition storage equipment,Computer-Aided Software Engineering
589	CASS	Command Activated Sonobuoy System
590	CASTFOREM	Combined Arms and Support Task FORce Evaluation Model
591	CASTOR	Canadian Automatic Small Telescopes for Orbital Research
592	CAT	Community Acceptance Testing
593	CATK	Counterattack
594	CATS	Computer Active Technology Suspension
595	CATT	Combined Arms Tactical Trainer
596	CAV	Cavalry
597	CAVOK	Ceiling And Visibility OK ('Kav-okay')
598	CAW	Canadian Auto Workers (trade union)
599	CB	Citizens' Band radio,Cambodia (FIPS 10-4 country code)
600	CBASSE	Commission on Behavioral And Social Sciences and Education ('sea bass')
601	CBC	Canadian Broadcasting Corporation,Christmas Bird Count,Cipher-Block Chaining,Cornering Brake Control
602	CBE	Commander of the Order of the British Empire,Cab Beside Engine (see truck)
603	CBF	Confederação Brasileira de Futebol (Portuguese,'Brazilian Football Confederation')
604	CBGB	Country,Blue Grass,and Blues (former New York City nightclub)
605	CBLA	Comparative bullet lead analysis
606	CBM	Canadian Baptist Ministries
607	CBM	Commodore Business Machines
608	CBML	Coalition Battle Management Language
609	CBN	CardsApp Brand Number
610	CBOL	Consortium for the Barcode of Life
611	CBOT	Chicago Board of Trade
612	CBP	Customs and Border Protection
613	CBR	Case-Based Reasoning
614	CBRN	Chemical,Biological,Radiological,or Nuclear (weapon or event)
615	CBRNE	Chemical,Biological,Radiological,Nuclear or [high-yield] Explosive (weapon or event)
616	CBS	Columbia Broadcasting System,Corps Battle Simulation
617	CBUS	Columbus,Ohio
618	CC	carbon copy
619	CCA	Counter Command Activity
620	CCC	Canterbury Clothing Company,Civilian Conservation Corps (U.S.,1930s and 1940s),Corpus Christi College,Oxford
621	CCCP	Central Committee of the Communist Party,Cyrillic for SSSR (Soyuz Sovetskikh Sotsialisticheskikh Respublik,Russian Союз Советских Социалистических Республик,Union of Soviet Socialist Republics)
622	CCD	Confraternity of Christian Doctrine (Catechism)
623	CCF	Cartoon Cartoon Fridays
624	CCG	Canadian Coast Guard,Collectible Card Game
625	CCGC	Canadian Coast Guard Cutter,Canadian Coast Guard College
626	CCGH	Canadian Coast Guard Hovercraft
627	CCGS	Canadian Coast Guard Ship,Christ Church Grammar School
628	CCH	Computer-Controlled Hostile
629	CCIF	Comité consultatif international des communications téléphoniques à grande distance (French for International Telephone Consultative Committee,merged with the CCIT in 1956 to form the CCITT)
630	CCII	Command and Control Information Infrastructure,Community Capital Investment Initiative
631	CCIR	Comité 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
632	CCIT	Comité consultatif international télégraphique (French for International Telegraph Consultative Committee,merged with the CCIF in 1956 to form the CCITT)
633	CCITT	Comité consultatif international téléphonique et télégraphique (French for International Telegraph and Telephone Consultative Committee,became the ITU Telecommunication Standardization Sector,ITU-T,in 1992)
634	CCK	Cholecystokinin,Cocos (Keeling) Islands (ISO 3166 trigram)
635	CCM	Canada 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
636	CCOC	Canadian Children's Opera Chorus,Crosley Car Owners Club
637	CCOP	Coalition Common Operating/Operational Picture
638	CCP	Casualty Collection Point,Communications Checkpoint,Contingency Communications Package
639	CCPA	Consumer Credit Protection Act
640	CCR	Creedence Clearwater Revival
641	CCRAp	Canadian Conservative Reform Alliance party
642	CCRP	Command and Control Research Program
643	CCRTS	Command and Control Research and Technology Symposium
644	CCSCS	Consultative Committee for Space Data Systems
645	CCSCS	Coordinadora de Centrales Sindicales del Cono Sur
646	CCSIL	Command and Control Simulation Interface Language ('cecil')
647	CCSK	Cyclic Code Shift Keying
648	CCT	Current Commitments Team
649	Cd	Cadmium
650	cd	Candela
651	CD	Compact Disc
652	CD1	Cluster of Differentiation 1 (a small gene family)
653	CDA	UK Centre for Defence Analysis
654	CDD	Capabilities Development Document
655	CDE	Chemical Defence Equipment
656	CDIAC	Carbon Dioxide Information Analysis Center ('see-dee-ack')
657	CDipAF	Certified Diploma in Accounting and Finance
658	CDL	Commercial driver's license
659	CDM	Clean Development Mechanism (Kyoto protocol), Cold Dark Matter (astronomy)
660	CDMA	Code Division Multiple Access
661	CDMSII	Cryogenic Dark Matter Search II
662	Cdr	Commander
663	CDT	Central Daylight Time (UTC−5 hours)
664	Cdt	Commandant
665	Ce	Cerium
666	CE	Christian/Common Era
667	CEA	Campaign Effectiveness Analysis
668	CECOM	U.S. Army Communications and Electronics Command
669	CEDEX	Courrier d'entreprise à distribution exceptionnelle (French,'Company Mail with Exceptional Distribution'; 'exceptional' refers to the volume of mail)
670	CEGEP	Collège d'enseignement général et professionnel (French,'College of General and Vocational Education')
671	CEI	Competitive Enterprise Institute
672	CENTCOM	United States Central Command
673	CENTO	Central Treaty Organization (Baghdad Pact)
674	CENZUB	Centre d'entraînement aux actions en zone urbaine (French,'Urban Operations Training Centre')
675	CEO	Chief Executive Officer
676	CEP	Circular Error Probable
677	CEPT	Conférence européenne des administrations des postes et des télécommunications (French,'European Conference of Postal and Telecommunications Administrations')
678	CERCLA	U.S. Comprehensive Environmental Response,Compensation,and Liability Act (Superfund)
679	CERDEC	U.S. Communications-Electronics Research,Development and Engineering Center
680	CERGA	Centre de recherches en géodynamique et astrométrie (French,'Astrometry and Geodynamics Research Centre')
681	CERN	Centre européen pour la recherche nucléaire (French,'European Organization for Nuclear Research')
682	CERT	Computer Emergency Response Team
683	CESS	Centre for Earth Science Studies (India)
684	CEST	Central European Summer Time
685	CET	Central European Time
686	CEWC	Council for Education in World Citizenship
687	Cf	Californium
688	CF	Canadian Forces,Central African Republic (ISO 3166 digram),Republic of the Congo (FIPS 10-4 country code)
689	CFA	Cat Fanciers' Association,Chartered Financial Analyst,Colour Filtering Array,County Fire Authority,Covering Force Area
690	CFAR	Christine's,Federal Acquisition Regulation
691	CFC	ChloroFluoroCarbon,Canadian Fish Company
692	CFES	Continuous Flow Electrophoresis System
693	CFFZ	Call For Fire Zone
694	CFG	Context-free grammar,Control flow graph
695	CFHT	Canada-France-Hawaii Telescope
696	CFI	Center for Inquiry (CSICOP)
697	CFL	Canadian Football League,Co-ordinated Fire Line
698	CFLCC	Coalition Forces Land Component Command
699	CFM	Certified Facilities Manager
700	CFO	Chief Financial Officer
701	CFP	Call for papers, College Football Playoff, Common Fisheries Policy (EU)
702	CFR	Code of Federal Regulations,Căile Ferate Române (Romanian,'Romanian Railways')
703	CFRP	Carbon fibre reinforced plastic
704	CFS	Chronic Fatigue Syndrome
705	CFSP	Common Foreign and Security Policy
706	CFU	Colony Forming Unit in Microbiology
707	CFV	Cavalry Fighting Vehicle
708	CFZ	Critical Friendly Zone
709	CG	Client Group,Computer Graphics,Controls Group,Democratic Republic of the Congo (FIPS 10-4 country code),Republic of the Congo (ISO 3166 digram)
710	CGH	Comparative Genomic Hybridisation
711	CGIG	Cross-Government Implementation Group
712	CGO	Republic of the Congo (IOC and FIFA trigram,but not ISO 3166)
713	CGS	Chief of the General Staff
714	CGT	Capital Gains Tax
715	ch	ch(L) is used to denote the Chern character of a line bundle
716	CH	Chieftain tank,China (FIPS 10-4 country code),Switzerland (ISO 3166 digram; from Latin Confoederatio Helvetica)
717	CHAMPUS	(U.S.) Civilian Health and Medical Program of the Uniformed Services (now known as TRICARE)
718	CHAOS	Cambridge Heart Anti-Oxidant Study
719	CHAPS	Clearing House Automated Payment System
720	CHDK	Canon Hack Development Kit (Canon camera firmware hack)
721	CHE	Switzerland (ISO 3166 trigram; from Latin Confoederatio Helvetica)
722	CHI	Columbia Helicopters,Inc
723	CHiP	California Highway Patrol
724	CHIPS	Cosmic Hot Interstellar Plasma Spectrometer
725	CHL	Chile (ISO 3166 trigram)
726	CHLA	Core Historical Literature of Agriculture
727	CHN	China (ISO 3166 trigram)
728	CHOGM	Commonwealth Heads of Government Meeting
729	CHPSO	California Hospital Patient Safety Organization
730	CHRS	Canadian Heart Rhythm Society
731	CHT	Certified Hand Therapist
732	CI	Chile (FIPS 10-4 country code),Côte d'Ivoire (ISO 3166 digram),Counter-Intelligence,101 (in Roman numerals)
733	Ci	Curie
734	CIA	U.S. Central Intelligence Agency, Cairo International Airport, Culinary Institute of America
735	CIAO	Critical Infrastructure Assurance Office,Component-Integrated ACE ORB
736	CIB	Complete In Box (Internet auction/trading listings)
737	CIBC	Canadian Imperial Bank of Commerce
738	CICS	Customer Information Control System (IBM mainframe software; 'kicks' or 'C-I-C-S')
739	CID	Certified Interior Designer
740	CIEF	Comité international d'enregistrement des fréquences (International Frequency Registration Board)
741	CIF	Cost,Insurance,and Freight (Paid) (shipping)
742	CIMMYT	Centro Internacional de Mejoramiento de Maíz Y Trigo (Spanish,'International Maize and Wheat Improvement Center')
743	CINC	Commander in Chief
744	CINEOS	Campo Imperatore Near-Earth Object Survey
745	CIO	Chief information officer,Congress of Industrial Organizations
746	CIPE	(European) Centre for International Political Economy
747	CIR	(Commander's) Critical Information Requirements
748	CIR	Corotating Interaction Region
749	CIS	Canadian Interuniversity Sport,Commonwealth of Independent States,Command and Information System,Communication and Information System
750	CISA	(U.S.) C4I Integration Support Activity
751	CISB	Complete In Sealed Box (Internet auction/trading listings)
752	CISPR	Comité international spécial des perturbations radioélectriques (Special International Committee on Radio Interference)
753	CISSP	Certified Information Systems Security Professional
754	CITES	Convention on International Trade in Endangered Species (of Wild Fauna and Flora) ('sigh-tease')
755	CIV	Côte d'Ivoire (ISO 3166 trigram)
756	CIVETS	Colombia,Indonesia,Vietnam,Egypt,Turkey,South Africa (economics)
757	CIVPOP	Civilian Population
758	CIWS	Close-In Weapon System
759	CJ	Cayman Islands (FIPS 10-4 country code),Criminal Justice
760	CJC	Canadian Jewish Congress,Cold Junction Compensation
761	CJCS	Chairman of the Joint Chiefs of Staff
762	CJD	Chronological Julian Day,Creutzfeldt-Jakob Disease
763	CJO	Chief of Joint Operations
764	CJTF	Combined Joint Task Force
765	CK	Cocos (Keeling) Islands (FIPS 10-4 country code),Cook Islands (ISO 3166 digram)
766	CKA	commonly known as, Canada Kicks Ass
767	CKND	Codename: Kids Next Door
768	CL	Chile (ISO 3166 digram),Co-ordination Line,One Hundred and Fifty (in Roman numerals)
769	Cl	Chlorine
770	CLA	Clutterers Anonymous
771	CLEC	Competitive Local Exchange Carrier
772	CLEMARS	California Law Enforcement Mutual Aid Radio System
773	CLIC	Compact LInear Collider
774	CLO	Cornell Lab of Ornithology
775	CLOS	Command to Line-Of-Sight (missile control system)
776	CLPFC	CentroLateral PreFrontal Cortex
777	CLRP	College Loan Repayment Program
778	CM	Cameroon (FIPS 10-4 country code; ISO 3166 digram),Cruise Missile,Nine Hundred (in Roman numerals)
779	Cm	Curium
780	CMA	U.S. Chemical Materials Agency,Country Music Association (also used to refer to the organization's annual awards),Crystal Meth Anonymous
781	CMHC	Canada Mortgage and Housing Corporation
782	CMIIAW	Correct me if I am wrong
783	CMIS	Common management information service
784	CMJ	Christopher Martin-Jenkins (BBC sports commentator)
785	CMLL	Consejo Mundial de Lucha Libre (Spanish,'Worldwide Wrestling Council'—Mexican professional wrestling promotion)
786	CMM	Capability Maturity Model
787	CMMC	Corps Materiel Management Centre
788	CMML	Chronic MyeloMonocytic Leukemia,Continuous Media Markup Language
789	CMOS	Canadian Meteorological and Oceanographic Society,(The) Chicago Manual of Style,Complementary Metal Oxide Semiconductor
790	CMP	Common [Operating/Operational] Maritime Picture
791	CMPD	Charlotte Mecklenburg Police Department
792	CMPD	Chronic Myeloproliferative Disease
793	CMR	Cameroon (ISO 3166 trigram),Coaxial Main Rotors (helicopter type)
794	CMS	Centers for Medicare and Medicaid Services,The Chicago Manual of Style
795	CMT	Country Music Television
796	CMU	Carnegie Mellon University,Central Michigan University,Concrete Masonry Unit
797	CMW	Marconi'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)
798	CMYK	Cyan Magenta Yellow Key/blacK (colour model)
799	CN	Canadian National (railway; also the AAR reporting mark for said company),China (ISO 3166 digram),Comoros (FIPS 10-4 country code)
800	CNA	Center 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
801	CNBC	Consumer News and Business Channel
802	CND	Campaign for Nuclear Disarmament,Computer Network Defence
803	CNE	Canadian National Exhibition,Computer Network Exploitation,Certified Network Engineer
804	CNF	Cost and Freight
805	CNI	Clinical Nursing Intern
806	CNI	Communications,Navigation and Identification
807	CNN	Cable News Network,Cellular Nonlinear Network
808	CNV	Copy-Number Variable (genetics)
809	Co	Cobalt
810	COB	Close Of Business [day]
811	COBRA	Consolidated Omnibus Budget Reconciliation Act of 1985
812	COD	Cash On Delivery,Democratic Republic of the Congo (ISO 3166 trigram)
813	CoDA	Co-Dependents Anonymous
814	COGENT	Cognitive Objects within a Graphical EnviroNmenT
815	COIL	Chemical Oxygen Iodine Laser
816	COK	Cook Islands (ISO 3166 trigram)
817	COL	Colombia (ISO 3166 trigram)
818	COLA	Cost Of Living Adjustment
819	CONAD	U.S. Continental Air Defense Command
820	CONMEBOL	Confederación Sudamericana de Fútbol or Confederação Sul-Americana de Futebol (respectively Spanish and Portuguese for 'South American Football Confederation')
821	CONUS	Continental United States
822	COO	Chief Operating Officer
823	COPE	U.K. Committee On Publication Ethics
824	COPUS	U.K. Committee on the Public Understanding of Science
825	CORD	Common Operational Requirements Document
826	CORE	Consortium for Oceanographic Research and Education
827	COS	Cooper Ornithological Society
828	COSER	COoperative SERvice
829	CoT	Car of Tomorrow (former NASCAR race car design)
830	COTS	Commercial Off The Shelf
831	CP	Canadian Pacific,Check Point,Command Post,Club Penguin
832	CPA	Certified Public Accountant
833	CPAC	Conservative Political Action Conference,Cable Public Affairs Channel ('see-pack')
834	CPCU	Certified Property Casualty Underwriter
835	CPD	Capabilities Production Document
836	CPE	Certificate of Proficiency in English
837	CPE	Certified Professional Ergonomist
838	CPF	Calibration Parameter File,Canadian Patrol Frigate
839	CPG	Clinical Practice Guideline
840	CPIM	Certification on Production and Inventory Management
841	CPIR	Computationally-Private Information Retrieval
842	CPON	Certified Pediatric Oncology Nurse
843	CPPCC	Chinese People's Political Consultative Conference
844	CPR	Canadian Pacific Railway
845	CPR	Cardiopulmonary resuscitation
846	CPSM	Continuous Phase Shift Modulation
847	CPSU	Communist Party of the Soviet Union
848	CPT	Contingency Planning Team
849	CPU	Contract Postal Unit
850	CPV	Cape Verde (ISO 3166 trigram)
851	CPX	Command Post eXercise
852	CQ	Carrier Qualification,Central Queensland,Charge of Quarters,Congressional Quarterly,Constellation Airlines (IATA airline designator),Northern Mariana Islands (FIPS 10-4 territory code)
853	CQD	Close Quarters Drill (Morse distress code preceding SOS: CQ 'calling all stations',D 'Distress'; often incorrectly interpreted as 'Come Quick,Distress')
854	Cr	Chromium
855	CR	Coral Sea Islands (FIPS 10-4 territory code),Costa Rica (ISO 3166 digram)
856	CRAM	Combined Radiometric Correction Model
857	CRD	Capstone Requirements Document
858	CREB	Cyclic AMP-response Element Binding (protein)
859	CREEP	Committee for the Re-Election of the President,a pejorative nickname used by opponents
860	CREN	Christian Real Estate Network Real Estate Association
861	CRI	China Radio International,Costa Rica (ISO 3166 trigram)
862	CRIPL	Consolidated Remain-In-Place List
863	CRM	Cardiac Rhythm Management,Customer Relationship Management
864	CRO	Croatia (IOC and FIFA trigram,but not ISO 3166)
865	CRP	Committee for the Re-Election of the President,Control and Reporting Post
866	CRT	Cardiac Resynchronization Therapy,Cathode Ray Tube,Chinese Remainder Theorem
867	CRTC	Canadian Radio-television and Telecommunications Commission
868	Cs	Caesium
869	CSA	Canadian 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
870	CSC	Closed Spacelike Curve (relativity),Compact system camera,Computer Sciences Corporation,Computer Security Centre,CSCC Canadian Society of Clinical Chemists
871	CSERIAC	(U.S. DoD) Crew Systems Ergonomics Information Analysis Center
872	CSG	Corps Support Group
873	CSI	see entry
874	CSICOP	Committee for the Scientific Investigation of Claims of the Paranormal (became the Committee for Skeptical Inquiry in 2006)
875	CSIP	Commercial Stable Image Platform (AMD)
876	CSIS	Canadian Security Intelligence Service ('seessiss'),(U.S.) Center for Strategic & International Studies
877	CSK	Czechoslovakia (ISO 3166 trigram; obsolete since 1993)
878	CSL	U.K. Central Science Laboratory
879	CSPI	Center for Science in the Public Interest
880	CSR	Control Supply Rate
881	CSR	Corporate Social Responsibility
882	CSRC	Conflict Studies Research Centre
883	CSRF	Cross-Site Request Forgery
884	CST	Central Standard Time (UTC−6 hours)
885	CT	Computed 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)
886	CTA	Central African Republic (FIFA trigram,but not ISO 3166 or IOC),Chicago Transit Authority,Comando-Geral de Tecnologia Aerospacial (Portuguese,[Brazilian] 'General Command for Aerospace Technology')
887	CTBT	Comprehensive [Nuclear] Test Ban Treaty
888	CTDB	Compact Terrain Data Base (file format)
889	CTE	Canton and Enderbury Islands (ISO 3166 trigram; obsolete 1984),Chronic traumatic encephalopathy
890	CTGF	connective tissue growth factor
891	CTI	Co-operative Target Identification
892	CTIL	Critical Tracked Items List
893	CTIS	Central Tire Inflation System
894	CTMS	Clinical Trial Management System
895	CTO	Chief Technical Officer,Chief Technology Officer
896	CTS	Clear-To-Send,Collective Training Standards,Communications Technology Service,Contract Technical Services,Conversation Time Sharing,COSMIC Top Secret
897	CTSS	Compatible Time-Sharing System
898	CTU	Counter Terrorist Unit (fictional branch of the Central Intelligence Agency in the television action series 24)
899	CTVT	Canine Transmissible Venereal Tumour
900	Cu	Copper (Latin 'Cuprum')
901	CUB	Cuba (ISO 3166 trigram)
902	CUCV	Commercial Utility Cargo Vehicle
903	CUNY	City University of New York ('CUE-knee')
904	CUPE	Canadian Union of Public Employees ('CUE-pee')
905	CUPS	Common Unix Printing System
906	CUPW	Canadian Union of Postal Workers
907	CUREA	Consortium for Undergraduate Research and Education in Astronomy
908	CuW	Copper-tungsten pseudo-alloy (from the chemical symbols of the two component elements)
909	CUW	Curaçao (ISO 3166 trigram)
910	CV	curriculum vitae (résumé)
911	CVLL	Crypto Variable Logic Label
912	CVSD	Continuous Variable Slope Delta (modulation)
913	CVT	Continuously Variable Transmission
914	CW	Calendar Week, or: Continuous Wave, or: Clothes Washer, or: Cook Islands (FIPS 10-4 territory code)
915	CWA	Communications Workers of America
916	CWC	Chemical Weapons Convention
917	CWRU	Case Western Reserve University
918	CWS	Canadian Wildlife Service
919	CX	Christmas Island (ISO 3166 digram),or: One Hundred and Ten (in Roman numerals)
920	CXR	Christmas Island (ISO 3166 trigram)
921	CY	Calendar year, or: Cyprus (ISO 3166 and FIPS 10-4 country code digram)
922	CYM	Cayman Islands (ISO 3166 trigram)
923	CZE	Czech Republic (ISO 3166 trigram)
924	CZF	(Christian Zombie Fan)
925	CZMA	(US) Coastal Zone Management Act
926	d	Deci
927	D	Deuterium
928	DADVSI	Loi sur le droit d’auteur et les droits voisins dans la société de l’information (French,'Law on copyrights and related rights in the information society')
929	DAES	Defence Acquisition Executive Summary,(UK MoD) Directorate of Analysis,Experimentation and Simulation
930	DAF	Dissolved Air Flotation,a technique used in water treatment
931	DAFIF	Digital Aeronautical Flight Information File
932	DAK	Disney's Animal Kingdom
933	DAO	Division Ammunition Officer
934	DAQ	Data acquisition,Delivered Audio Quality
935	DARE	Drug Abuse Resistance Education
936	DARO	(U.S.) Defense Airborne Reconnaissance Office
937	DARPA	U.S. Defense Advanced Research Projects Agency
938	DART	Disaster Assistance Response Team,Dublin Area Rapid Transit
939	DAS	Defensive Aids Suite
940	DASD	(U.S.) Deputy Assistant Secretary of Defense
941	DASL	Datapoint's Advanced Systems Language
942	DAU	(U.S.) Defense Acquisition University
943	DAWN	(U.S.) Drug Abuse Warning Network
944	dB	Decibel
945	DB	Deutsche Bahn
946	Db	Dubnium
947	DBA	De Bellis Antiquitatis (miniature wargaming rules)
948	DBBL	(U.S. Army Simulation Center) Dismounted Battlespace Battle Laboratory
949	DBDO	Desert BDO
950	DBE	Dame Commander of the Order of the British Empire
951	DBF	Detection By Fire (weapon launch signature)
952	DBR	De Bellis Renationis (miniature wargaming rules)
953	DBRA	Davis-Bacon Related Acts
954	DBS	Direct Broadcast Services (television)
955	DC	da capo,Italian Democrazia Cristiana,Digital Compass,Direct Current,District of Columbia (postal symbol),Douglas Aircraft Company,Dublin Core,Duty Cycle
956	DCA	Defensive Counter Air,Drum Corps Associates,DiChloroAcetate
957	DCAA	(U.S.) Defense Contract Audit Agency
958	DCAS	Devon and Cornwall Archery Society
959	DCC	Dallas Christian College
960	DCD	[Organ] Donation after Cardiac Death
961	DCE	Data Communication Equipment
962	DCFC	Death Cab for Cutie
963	DCI	Detection,Classification and Identification,Drum Corps International,Duellists' Convocation International,now known simply by the initials
964	DCL	Disney Cruise Line
965	DCN	Deacon
966	DCOM	Disney Channel Original Movie
967	DCSOPS	Deputy Chief of Staff for Operations and plans
968	DCW	Digital Chart of the World
969	DCYSC	Discovery Channel Young Scientist Challenge
970	DD	due diligence and dear daughter (increasingly prevalent on social mailing lists,blogs,and bulletin boards)
971	DDA	Deputy District Attorney
972	DDN	U.S. Defense Data Network
973	DDS	Doctor of Dental Surgery
974	DDT	Dichloro-Diphenyl-Trichloroethane (insecticide),Dynamic Debugging Tool (computing),DE[edit]
975	DE	Delaware (postal symbol),Germany (ISO 3166 digram)
976	DEA	Drug Enforcement Administration
977	DEA	Drug Enforcement Agency
978	DEC	Department of Environmental Conservation,Digital Equipment Corporation,Disasters Emergency Committee
979	DeCA	(U.S.) Defense Commissary Agency
980	DEFCON	Defence readiness condition
981	DEFRA	(UK) Department for Environment,Food and Rural Affairs
982	DELT	Dual Ended Line Test (ing)
983	DEM	Data Exchange Mechanism,Digital Elevation Model
984	DEN	Denmark (IOC and FIFA trigram,but not ISO 3166)
985	DEPSECDEF	(U.S.) Deputy Secretary of Defense
986	DERA	British Defence Evaluation and Research Agency (1995-2001)
987	DES	Deep Ecliptic Survey
988	DEU	Germany (ISO 3166 trigram)
989	DF	Direct Fire,Direction Finding,Distrito Federal (Spanish and Portuguese for 'federal district')
990	DFAS	(U.S.) Defense Finance and Accounting Service
991	DFB	Deutscher Fußball-Bund (German for 'German Football Association')
992	DFCB	Data Format Control Book
993	DfID	UK Department for International Development
994	DFM	Discrete Field Model see Superluminal motion
995	DFM	Dynamic Flowgraph Methodology
996	DFSP	Dermatofibrosarcoma protuberans
997	DfT	UK Department for Transport
998	DFTBA	Don't Forget To Be Awesome,a term commonly used by the Vlogbrothers
999	DG	Dei gratia (Latin,'by the grace of God'),Director-General,Data General
1000	DGA	Direction générale des armées (French 'Armed Forces General Directorate')
1001	DGPS	Differential GPS
1002	DGZ	Desired Ground Zero
1003	DHA	DocosaHexaenoic Acid
1004	DHHS	(U.S.) Department of Health and Human Services
1005	DHRA	(U.S.) DoD Human Resources Activity
1006	DHS	U.S. Department of Homeland Security
1007	DHSS	UK Department of Health and Social Security
1008	DHTFYSS	U.S. Don't Have Time For You Silly S****
1009	DHY	Dahomey (ISO 3166 trigram; became BEN for Benin in 1977)
1010	DIA	U.S. Defense Intelligence Agency
1011	DIAC	Department of Immigration and Citizenship (Australia) [1]
1012	DiC	Design Island Centre (computing usually used in a teaching situation)
1013	DICASS	DIrectional Command Activated Sonobuoy System
1014	DIFAR	DIrectional Frequency Analysis and Recording
1015	DIME	Dense Inert Metal Explosive
1016	DIP	Dual In-line Package (electronics)
1017	DIPS	Defense independent pitching statistics
1018	DIR	Defence Industrial Research
1019	DISCOM	Division Support Command
1020	DISE	Deployable Intelligence Support Element
1021	DISSTAF	DIS Search and Target Acquisition Fidelity experiment
1022	DITY	Do-It-Yourself
1023	DIVAD	Division Air Defence
1024	DIY	Do It Yourself
1025	DJI	Djibouti (ISO 3166 trigram)
1026	DK	Denmark (ISO 3166 digram)
1027	DL	Dexter's Laboratory
1028	DLIC	Detachment Left-In-Contact
1029	DLIR	Depot-Level Inspection and Repair
1030	DLPMC	DorsoLateral PreMotor Cortex
1031	DLRP	Data Link Reference Point
1032	DLS	Deep Lens Survey
1033	DLSA	(U.S.) Defense Legal Services Agency
1034	DLSc	Diploma in Library Science
1035	DLTBGYD	Don't let the bastards grind you down
1036	DMC	(U.S.) Defense Management Council
1037	DMCA	Digital Millennium Copyright Act
1038	DMM	Digital Multimeter
1039	DMOC	Distributed Mission Operations Centre
1040	DMPA	(U.S.) Defense Medical Programs Activity
1041	DMPFC	DorsoMedial PreFrontal Cortex
1042	DMPK	Drug Metabolism and Pharmacokinetics
1043	DMRB	Design Manual for Roads and Bridges
1044	DMS	U.S. Defense Message System
1045	DMSP	U.S. Defense Meteorological Satellite Program
1046	DMT	Dimethyltryptamine
1047	DMV	Department of Motor Vehicles
1048	DMZ	DeMilitarized Zone
1049	DN	Deacon
1050	DNAW	Day Night All Weather
1051	DNDi	Drugs for Neglected Diseases initiative
1052	DNDO	U.S. Domestic Nuclear Detection Office
1053	DNK	Denmark (ISO 3166 trigram)
1054	DNM	Defence Nuclear Material
1055	DNR	Do Not Resuscitate
1056	DNS	Domain Name System
1057	DOB	Date Of Birth
1058	DOD	U.S. Department of Defense
1059	DODAF	U.S. Department of Defense Architectural Framework
1060	DoDD	U.S. Department of Defense Directive
1061	DoDEA	(U.S.) Department of Defense Education Activity
1062	DOE	U.S. Department of Energy
1063	DOHC	Dual-OverHead-Cam engine
1064	DOI	U.S. Department of the Interior
1065	DORA	Defence of the Realm Act
1066	DOS	Density of State
1067	DOTA	short-form for DEFENSE OF THE ANCIENTS a popular online epic game
1068	DotD	Deal of the Day (marketing gimmick)
1069	DOW	Died of Wounds
1070	DP	Division de production (Algerian petroleum company)
1071	DPA	UK Defence Procurement Agency
1072	DPCO	Double-Pole Change Over
1073	DPDT	Double-Pole Double-Throw
1074	DPI	Dots Per Inch
1075	DPICM	Dual-Purpose Improved Conventional Munition
1076	DPKO	UN Department for Peacekeeping Operations
1077	DPMO	(U.S.) Defense Prisoner of War/Missing Personnel Office
1078	DPPDB	Digital Point Positioning Database
1079	DPRK	Democratic People's Republic of Korea
1080	DPST	Double-Pole Single-Throw
1081	DRC	Democratic Republic of the Congo
1082	DRDC	Defence Research & Development Canada
1083	DREA	Defence Research Establishment Atlantic (obsolete 2002)
1084	DRES	Defence Research Establishment Suffield (obsolete 2002)
1085	DRET	Defence Research Establishment Toronto (obsolete 2002)
1086	DREV	Defence Research Establishment Valcartier (obsolete 2002)
1087	DRIC	(U.S.) Defense Research Information Center
1088	DRMS	(U.S.) Defense Revitalization and Marketing Service
1089	DRPR	Drawing Practices
1090	DRT	Document Related Technologies
1091	Ds	Darmstadtium
1092	DSAS	Disney Sing Along Songs
1093	DSB	(U.S.) Defense Science Board
1094	DSCS	U.S. Defense Satellite Communications System
1095	DSCSOC	DSCS Operations Center
1096	DSE	Dry Sheep Equivalent
1097	DSG	Direct-Shift Gearbox
1098	DSID	Dismounted Soldier Identification System
1099	DSL	Digital Subscriber Line
1100	DSLR	Digital single-lens reflex (camera)
1101	DSM	Diagnostic and Statistical Manual of Mental Disorders
1102	DSN	Deep Space Network
1103	DSPL	Design Specialists and Plans Language
1104	DSR	Deformed Special Relativity
1105	DST	Daylight Saving Time
1106	DSTL	British Defence Science and Technology Laboratory
1107	DSWA	(U.S.) Defense Special Weapons Agency
1108	DTA	Dental Technologists Association
1109	DTD	Digital Terrain Data
1110	DTG	Date-Time Group
1111	DTH	Direct To Home (television)
1112	DTI	UK Department of Trade and Industry
1113	DTIC	(U.S.) Defense Technical Information Center
1114	DTL	Diode-Transistor Logic (electronics)
1115	DTMF	Dual-tone multi-frequency signaling
1116	DTO	Disruptive Technology Office (was ARDA)
1117	DTR	Determine The Relationship
1118	DTSA	(U.S.) Defense Technology Security Administration
1119	DUMBO	Down Under the Manhattan Bridge Overpass (Brooklyn neighborhood)
1120	DUSD	(U.S.) Deputy Under-Secretary of Defense
1121	DVLC	UK Driver and Vehicle Licencing Centre
1122	DVM	Doctor of Veterinary Medicine
1123	DVO	Direct View Optics
1124	DVOM	Digital Volt-Ohm Meter
1125	DVP	various meanings (disambiguation page)
1126	DW	Drum Workshop
1127	DWIM	Do What I Mean
1128	DWM	Doctor Who Magazine
1129	DWTS	Dancing with the Stars
1130	DWW	Down with Webster
1131	DXA	Dual-energy X-ray Absorptiometry
1132	DXM	DeXtroMethorphan
1133	DY	Dahomey (ISO 3166 digram; obsolete since 1977)
1134	Dy	Dysprosium
1135	DZA	Algeria (ISO 3166 trigram)
1136	E	East
1137	EABU	Explain Acronyms Before Use
1138	EAC	Echelons Above Corps
1139	EAPC	Euro-Atlantic Partnership Council
1140	EAST	Experimental Advanced Superconducting Tokamak
1141	EBD	Electronic Brake Distribution
1142	EBE	Extraterrestrial Biological Entity
1143	EBSA	Employee Benefits Security Administration
1144	EBW	Electron Beam Welding
1145	EBW	Exploding BridgeWire
1146	ECASS	European Centre for Analysis in the Social Sciences [1]
1147	ECBR	European Coalition for Biomedical Research
1148	ECCM	Electronic Counter-Counter-Measures
1149	ECFS	Electronic Case Filing System
1150	ECG	Electrocardiogram
1151	ECHR	European Convention on Human Rights
1152	ECJ	European Court of Justice
1153	ECL	Emitter Coupled Logic (electronics)
1154	ECommHR	European Commission on Human Rights
1155	ECSC	European Coal and Steel Community (distant ancestor of the EU)
1156	ECT	ElectroConvulsive Therapy
1157	ECtHR	European Court of Human Rights
1158	EDA	European Defence Agency
1159	EDAC	Error Detection And Correction
1160	EDCS	Environmental Data Coding Specification
1161	EDH	Eastman Dental Hospital
1162	EDSA	Epifanio de los Santos Avenue (a major thoroughfare in Manila with great significance to post-1980 Philippines history)
1163	EDT	Eastern Daylight Saving Time (UTC−4 hours)
1164	EEC	European Economic Community (predecessor of the EU)
1165	EEG	ElectroEncephaloGram
1166	EENT	End Evening Nautical Twilight
1167	EEO	Equal Employment Opportunity
1168	EEOC	(U.S.) Equal Employment Opportunity Commission
1169	EEZ	Economic Exclusion Zone or Exclusive Economic Zone
1170	EFF	Electronic Frontier Foundation
1171	EFL	English as a Foreign Language
1172	EFM	Enterprise Feedback Management
1173	EFOA	European Fuel Oxygenates Association
1174	EFSA	European Food Safety Authority
1175	EFT	Electronic Fund Transfer
1176	EFV	Expeditionary Fighting Vehicle
1177	EG	Egypt (ISO 3166 digram; FIPS 10-4 country code)
1178	EGCG	EpiGalloCatechin-3-Gallate
1179	EGIS	Erieye Ground Interface Segment
1180	EGRET	Energetic Gamma-Ray Experiment Telescope
1181	EGY	Egypt (ISO 3166 trigram)
1182	EHF	Extremely High Frequency
1183	EHR	Equipment History Record
1184	Ei	Exbi
1185	EI	Ireland (FIPS 10-4 country code; from Éire)
1186	EIA	Environmental Impact Assessment
1187	EIAH	Encyclopedia of Iranian Architectural History
1188	EIAH	Environnements Informatiques pour l'Apprentissage Humain
1189	EIC	East India Company
1190	EICS	East India Company's Service
1191	eID	electronic ID
1192	EIRP	Effective Isotropic Radiated Power
1193	EIS	Environmental Impact Statement
1194	EJ	Exajoule
1195	EKG	Electrocardiogram (from German Elektrokardiogramm)
1196	EKMS	Electronic Key Management System
1197	EL	Exalitre
1198	ELINT	Electronic Intelligence
1199	ELL	English Language Learner
1200	ELM	Edge-Localised Mode (plasma physics)
1201	ELO	Electric Light Orchestra
1202	ELSS	Emergency Life Support Stores
1203	EM	ElectroMagnetism/ElectroMagnetic
1204	Em	Exametre
1205	EMA	European Medicines Agency
1206	EMCON	(Electromagnetic) Emissions Control
1207	EMDG	Euro-Missile Dynamics Group
1208	EMDR	Eye Movement Desensitisation and Reprocessing
1209	EMEA	Europe,Middle East and Africa
1210	EMG	ElectroMyoGraph
1211	EMP	ElectroMagnetic Pulse
1212	EMS	Emergency Medical Services
1213	EMT	Emergency Medical Technician
1214	ENCODE	Encyclopedia of DNA Elements (human genome data project)
1215	ENE	East North-East
1216	ENG	England (FIFA trigram; not eligible for an ISO 3166 or IOC trigram)
1217	ENTEC	Euro NATO Training Engineer Centre
1218	ENVL	Envelope
1219	ENY	Enemy
1220	EOD	Explosive Ordnance Disposal
1221	EOG	ElectroOculoGraphy
1222	EOM	End of Message
1223	EOSAT	Earth Observation Satellite
1224	EOSDIS	Earth Observation Satellite Data and Information System
1225	EP	European Parliament
1226	EP	Extended play
1227	EPCOT	Experimental Prototype Community Of Tomorrow
1228	EPGS	EOS Polar Ground Sites
1229	EPIRB	Emergency Position Indicating Radio Beacon
1230	EPL	English Premier League
1231	EPOS	Electronic Point Of Sale
1232	EPPA	Employee Polygraph Protection Act
1233	EPR	European Pressurised [Nuclear] Reactor
1234	EQ	Emotional Quotient
1235	Er	Erbium
1236	ERCIM	European Research Consortium for Informatics and Mathematics
1237	ERI	Eritrea (ISO 3166 trigram)
1238	ERLAWS	Eastern Ruapehu Lahar Alarm and Warning System
1239	EROS	Earth Resources Observation System
1240	ERP	Engineer Regulating Point
1241	ERR	Eesti Rahvusringhääling
1242	ERS	Earth Resources Survey
1243	ERTS	Earth Resources Technology Satellite (became Landsat)
1244	ERV	Endogenous RetroVirus
1245	ESD	ElectroStatic Discharge
1246	ESDP	European Security and Defence Policy
1247	ESE	East South-East
1248	ESH	Western Sahara (ISO 3166 trigram)
1249	ESL	English as a Second Language
1250	ESM	Electronic warfare Support Measures
1251	ESO	European Southern Observatory
1252	ESOL	English for Speakers of Other Languages
1253	ESPN	Entertainment and Sports Programming Network
1254	ESU	Emergency Services Unit
1255	ESV	Engineer Support Vehicle
1256	ET	Ethiopia (ISO 3166 digram; FIPS 10-4 country code)
1257	ETH	Ethiopia (ISO 3166 trigram)
1258	ETI	Extra-Terrestrial Intelligence
1259	ETLA	Extended TLA
1260	ETT	Embedded Training Team
1261	Eu	Europium
1262	EUCOM	(U.S.) European Command
1263	EUUSA	European Union and United States of America
1264	EV	Exavolt
1265	EVIL	Electronic viewfinder (with) interchangeable lens (a type of digital camera)
1266	EWTN	Eternal Word Television Network
1267	Exatesla	Extra Terrestrial
1268	EXREP	Expeditious Repair (SM&R code)
1269	f	Femto
1270	fA	Femtoampere
1271	FA	Food Addicts in Recovery Anonymous
1272	FAA	Financial Aid Administrator,Fleet Air Arm,Functional Area Analysis
1273	FAAD	Forward Area Air Defence
1274	FAADEZ	Forward Area Air Defence Engagement Zone
1275	FAAFP	Fellow of the American Academy of Family Physicians
1276	FAAN	Fellow of the American Academy of Neurology
1277	FAAN	Fellow of the American Academy of Nursing
1278	FAAQ	Frequently Asked and Anticipated Questions
1279	FAASV	Field Artillery Ammunition Supply Vehicle
1280	FAB	Feline Advisory Bureau (UK feline charity)
1281	FACA	(US) Federal Advisory Committee Act
1282	FACH	Fuerza Aérea de Chile
1283	FACN	Fellow of the American College of Nutrition
1284	FACP	Fellow of the American College of Physicians
1285	FACTS	Flexible Alternating Current Transmission System
1286	FAM	Foreign Affairs Manual
1287	FAO	Food and Agriculture Organization
1288	FAPA	Fellow of the American Psychological Association
1289	FAPHA	Fellow of the American Public Health Association
1290	FARP	Forward Arming and Refuelling Point / Forward Area Rearm/refuel Point
1291	FASCAM	Family of Scatterable Mines[1]
1292	FASD	Fetal Alcohol Spectrum Disorder
1293	FASEB	Federation of American Societies for Experimental Biology
1294	FAT	Field Artillery Tractor
1295	FAVS	Future Armoured Vehicle System
1296	FAW	Football Association of Wales
1297	FBCS	Fellow of the British Computer Society
1298	FBIDST	Fellow of the British Institute of Dental and Surgical Technologists
1299	FBIS	Foreign Broadcast Information Service
1300	FBM	Board foot
1301	fC	Femtocoulomb
1302	FCC	U.S. Federal Communications Commission
1303	FCE	First Certificate in English
1304	FCF	Financial Free Cash Flow
1305	FCLA	Fraud Claims Law Associate
1306	FCO	UK Foreign and Commonwealth Office
1307	FCW	Florida Championship Wrestling
1308	FD	Falun Dafa
1309	FDA	Food and Drug Administration (U.S.)
1310	FDBK	(I) Feedback
1311	Fe	Iron (Latin Ferrum)
1312	FEAST	Forum for European-Australian Science and Technology Cooperation
1313	FEATS	Festival of European Anglophone Theatrical Societies link title
1314	FEBA	Forward Edge of the Battle Area
1315	FED	Field Emission Display
1316	FEDEP	Federation Development Process (Simulation)
1317	FEF	Frontal Eye Field (neurophysiology)
1318	FEMA	Farm Equipment Manufacturers Association, U.S. Federal Emergency Management Agency,Fire Equipment Manufacturers' Association
1319	FENS	Federation of European Neuroscience Societies
1320	FES	Flywheel Energy Storage
1321	FEST	Frankfurt English Speaking Theatre link title
1322	FET	Field-effect transistor
1323	FEZ	Fighter Engagement Zone
1324	fF	Femtofarad
1325	FF	Final Fantasy
1326	FFB	Frum From Birth (referring to an observant Jew born into a religiously observant family)
1327	FFC	Free For Chat
1328	FFE	Fukuoka Futures Exchange
1329	FFF	Fédération française de football (French for: French Football Federation)
1330	FFG	Guided Missile Frigate (hull classification symbol)
1331	FFOV	Forward Field Of View
1332	FFR	Fédération française de rugby (French for: French Rugby (Union) Federation)
1333	FFS	For Fuck's Sake
1334	FFT	Final Fantasy Tactics
1335	FG	Falun Gong
1336	fg	Femtogram
1337	FG	Fog (METAR Code), French Guiana (FIPS 10-4 territory code)
1338	FGOTUS	First Gentleman of the United States
1339	FGR	Flickr Group Roulette
1340	fH	Femtohenry
1341	FHFIF	Foster's Home for Imaginary Friends
1342	FHI	Family Health International, Fuji Heavy Industries,Ltd.
1343	FI	Finland (ISO 3166 digram; FIPS 10-4 country code)
1344	FIAT	Fabbrica Italiana Automobili Torino (Italian for: Italian Car Factory of Turin)
1345	FIB	Fucking Illinois Bastard (Wisconsin slang, variants exist)
1346	FIBUA	Fighting In Built-Up Areas
1347	FIC	Fellowship for Intentional Community
1348	FID	Foreign Internal Defence
1349	FIE	Fly-In Echelon
1350	FIFA	Fédération internationale de football association (French for: International Association Football Federation)
1351	FIFe	Fédération internationale féline (French for: International Feline Federation)
1352	FIFO	First In, First Out
1353	FIFRA	Federal Insecticide, Fungicide, and Rodenticide Act
1354	FIGJAM	Fuck I'm Good, Just Ask Me
1355	FIMPT	Fellow of the Institute of Maxillofacial Prosthetists and Technologists
1356	FIN	Finland (ISO 3166 trigram)
1357	FINA	Fédération internationale de natation (French for: International Swimming Federation)
1358	FIRES	Fever Induced Refractory Epilepsy Syndrome or Febrile Infection-Related Epilepsy Syndrome
1359	FIS	Fédération internationale de ski (French for: International Ski Federation)
1360	FISA	Fédération Internationale des Sociétés d'Aviron (French for: International Federation of Rowing Associations)
1361	FISH	Fluorescence In-Situ Hybridisation
1362	FiST	Fire Support Team
1363	FITS	Flexible Image Transport System
1364	FIU	Florida International University
1365	fJ	Femtojoule
1366	FJ	Fiji (ISO 3166 digram; FIPS 10-4 country code)
1367	FJI	Fiji (ISO 3166 trigram)
1368	FJN	Financial Job Network
1369	FK	Falkland Islands (ISO 3166 digram; FIPS 10-4 territory code)
1370	fK	Femtokelvin
1371	FKSM	Fort Knox Supplemental Manual
1372	FKT	Fastest Known Time
1373	fL	Femtolitre
1374	FL	Florida (postal symbol)
1375	fl	floruit (Latin for: living) (genealogy)
1376	FLA	Florida,Front Line Assembly,Future Large Aircraft
1377	FLAB	Four-letter abbreviation
1378	FLAC	Free Legal Advice Centres
1379	FLAC	Free Lossless Audio Codec
1380	FLAK	Flug-Abwehr-Kanone (German for: Anti-Aircraft Guns)
1381	FLB	Forward Logistics Base
1382	FLET	Forward Line of Enemy Troops
1383	FLG	Falun Gong
1384	FLIP	Flight Information Publication
1385	FLIR	Forward Looking InfraRed (sensor)
1386	FLK	Falkland Islands (ISO 3166 trigram)
1387	FLOT	Forward Line of Own Troops
1388	FLOTUS	First Lady of the United States (the wife of the President of the United States)
1389	FLQ	Free Legal Questions
1390	FLQ	Front de libération du Québec (French for: Québec Liberation Front)
1391	FLSA	Fair Labor Standards Act
1392	FLTSAT	Fleet Satellite
1393	FLTSATCOM	Fleet Satellite Communication System
1394	FLUBOS	Fat, Lazy, Useless, Bag Of Shit
1395	FM	Factory Mutual
1396	FM	Federal 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)
1397	fm	Femtometre
1398	Fm	Fermium
1399	FMC	Federal Magistrates' Court (an Australian federal court,formerly FMS),Food Machinery Corporation (original name of the company now known as FMC Corporation)
1400	FMCA	Federal Magistrates' Court of Australia (used for citing decisions of the FMC other than family law decisions)
1401	FMCAfam	Federal Magistrates' Court of Australia: family (used for citing family law decisions of the FMC)
1402	FMCG	Fast Moving Consumer Goods
1403	FME	Formal Methods Europe
1404	FMECA	Failure Modes and Effect Criticality Analysis
1405	FMJD	Fédération Mondiale du Jeu de Dames
1406	FMLA	Family Medical Leave Act
1407	FoE	Friends of the Earth
1408	FOGC	Federal Oil and Gas Council
1409	FOH	Front Of House
1410	FOIA	Freedom of Information Act
1411	FOM	Federation Object Model
1412	FONSI	Finding of No Significant Impact
1413	FOO	Forward Observation Officer
1414	FOOP	Friends Of Organ Pipes (Volunteer group)
1415	FoS	Family of Systems
1416	FOSE	Fallout 3 Script Extender
1417	FOSE	Federal Office Systems Expo
1418	FOT	Free on truck
1419	FOTA	Fellow of the Orthodontic Technicians Association
1420	FOTC	Flight of the Conchords
1421	FOUO	For Official Use Only
1422	FP	French Polynesia (FIPS 10-4 territory code)
1423	FPF	Federação Portuguesa de Futebol (Portuguese for: Portuguese Football Federation), Final Protective Fire
1424	FPS	Fire Prevention System
1425	FQ	Baker Island (FIPS 10-4 territory code),French Southern and Antarctic Territories (ISO 3166 digram; obsolete 1979)
1426	FR	France (FIPS 10-4 country code; ISO 3166 digram)
1427	Fr	Francium
1428	FRA	Federal Railroad Administration, France (ISO 3166 trigram)
1429	FRAND	Fair,reasonable,and non-discriminatory (concept in standards-setting and intellectual property law)
1430	FRCP	Federal Rules of Civil Procedure,Fellow of the Royal College of Physicians
1431	FRICBM	Full Range ICBM
1432	FRO	Faroe Islands (ISO 3166 trigram)
1433	FRS	Fellow of the Royal Society, U.S. Federal Reserve System
1434	FRSA	Fellow of the Royal Society of Art
1435	FRY	Federal Republic of Yugoslavia
1436	fs	Femtosecond
1437	fS	Femtosiemens
1438	FSA	Fire Support Area, UK Food Standards Agency, Functional Solution Analysis
1439	FSC	Federal Supply Classification, Forest Stewardship Council (ecological pressure group)
1440	FSCL	Fire Support Co-ordination Line
1441	FSE	Fire Support Element
1442	FSF	Free Software Foundation
1443	FSH	Follicle Stimulating Hormone
1444	FSI	Fuel Stratified Injection
1445	FSS	Fire Support Station
1446	FSSP	Families of Structurally Similar Proteins
1447	FSTC	Foreign Science Technology Center (now NGIC)
1448	fT	Femtotesla
1449	FTC	Federal Trade Commission
1450	FTE	Full Time Equivalent
1451	FTL	Faster Than Light
1452	FTS	Flight Termination System used during some rocket launches
1453	FTS	Fuck That Shit
1454	FU	Smoke (METAR Code)
1455	FUBAR	Fucked/Fouled Up Beyond All Recognition/Repair
1456	fV	Femtovolt
1457	fW	Femtowatt
1458	FW	Forward
1459	FWC	Football World Cup
1460	FWF	Fixed Word Format
1461	FWI	French West Indies
1462	FWIW	For What It's Worth
1463	FWS	U.S. Fish and Wildlife Service
1464	FWT	Fresh Water Tank
1465	FXX	Metropolitan France (ISO 3166 trigram; obsolete 1997)
1466	FYA	For Your Agenda
1467	FYDP	Five-Year Defense Plan (U.S.)
1468	FYI	For Your Information
1469	FYROM	Former Yugoslav Republic of Macedonia
1470	FZDZ	Freezing Drizzle (METAR Code)
1471	FZFG	Freezing Fog (METAR Code)
1472	FZRA	Freezing Rain (METAR Code)
1473	g	Gram
1474	G3	Heckler & Koch G3
1475	GAAR	General Anti-Avoidance Rule (tax evasion)
1476	GAB	Gabon (ISO 3166 trigram)
1477	GABA	Gamma-AminoButyric Acid
1478	GAD	Generalized Anxiety Disorder
1479	GAF	Garfield and Friends
1480	GAO	U.S. Government Accountability Office
1481	GAW	Global Atmospheric Watch
1482	GBBC	Great (Global) Backyard Bird Count
1483	GBE	Knight/Dame Grand Cross of the Order of the British Empire
1484	GBR	United Kingdom of Great Britain and Northern Ireland (ISO 3166 trigram)
1485	GCA	Graduate in Claims Administration
1486	GCD	see entry
1487	GCF	Greatest Common Factor
1488	GCI	Ground-controlled interception
1489	GCN	Gamma-ray burst Coordination Network
1490	GCS	Global Coordinate System
1491	GCSE	General Certificate of Secondary Education (UK)
1492	Gd	Gadolinium
1493	GD	Grenada (ISO 3166 digram)
1494	GDL	Game Definition Language
1495	GDR	General Distribution Release (Microsoft Term for a software service release; between Hotfix and Service Pack)
1496	GDR	German Democratic Republic (cf. DDR)
1497	GDW	Game Designers Workshop
1498	Ge	Germanium
1499	GEBCO	General Bathymetric Chart of the Oceans
1500	GEC	Great Engineering Challenge
1501	GED	General Educational Development (high school equivalency credential in the U.S. and Canada)
1502	GEEP	Geophysical Equipment Exploration Platform
1503	GEN	Full General (four stars) in the U.S. Army
1504	GeV	Gigaelectron-volt
1505	GEV	Ground Effect Vehicle
1506	GFCI	Ground Fault Circuit Interruptor (aka GFI)
1507	GFI	Ground Fault Interruptor (aka GFCI)
1508	GFL	German Football League (Germany's Bundesliga for American football; the English-language name is used in German without translation)
1509	GFN	Global Footprint Network
1510	GG	Georgia (FIPS 10-4 country code)
1511	GGK	Good God Karma
1512	GHA	Ghana (ISO 3166 trigram)
1513	GHB	gamma-Hydroxybutyric acid
1514	Gi	Gibi
1515	GIB	Gibraltar (ISO 3166 trigram)
1516	GIG	Global Information Grid
1517	GINO	Godzilla In Name Only
1518	GISS	General Impression of Size and Shape,Goddard Institute for Space Studies
1519	GJD	Geocentric Julian Day
1520	GLAAD	Gay and Lesbian Alliance Against Defamation
1521	GLAC	General Ledger Accounting Code
1522	GLAST	Gamma-ray Large Area Space Telescope
1523	GLBA	Gramm-Leach-Bliley Act
1524	GLC	Gas-liquid chromatography
1525	GLP	Guadeloupe (ISO 3166 trigram)
1526	GLV	Gained Life Value
1527	Gm	Gigametre
1528	GM	The Gambia (ISO 3166 digram),GameMaster (role-playing),General Motors,Genetically Modified,Germany (FIPS 10-4 country code),Guru Meditation (computing)
1529	GMAC	General Motors Acceptance Corporation,the original name of the company now known as Ally Financial,Graduate Management Admission Council,G-MAC,Great Midwest Athletic Conference
1530	GMB	The Gambia (ISO 3166 trigram),General,Municipal,Boilermakers (and Allied Trade Union)
1531	GMFSC	Ground Mobile Forces Satellite Communications
1532	GMO	Genetically Modified Organism
1533	GMPCS	Global Mobile Personal Communications by Satellite
1534	GNAS	Grand National Archery Society
1535	GNB	Guinea-Bissau (ISO 3166 trigram)
1536	GNP	Gross National Product
1537	GNQ	Equatorial Guinea (ISO 3166 trigram)
1538	GnRH	Gonadotropin-Releasing Hormone
1539	GO	Glorioso Islands (FIPS 10-4 territory code)
1540	GOA	General of the Army (United States only)
1541	GOAT	Greatest Of All Time
1542	GOC	General Officer Commanding
1543	GOES	Geostationary Operational Environmental Satellite
1544	GOP	Grand Old Party
1545	gorp	granola,oats,raisins,peanuts (another name for trail mix),probably a backronym
1546	GOSC	General Officer Steering Committee
1547	GOSH	Great Ormond Street Hospital
1548	GOSP	Gas/Oil Separation Plant
1549	GOTS	Government off-the-shelf
1550	GOYADIN	Get Off Your Arse,Do It Now (anti-procrastination mantra)
1551	GP	General Practitioner,General Purpose,Grand Prix,Guadeloupe (ISO 3166 digram; FIPS 10-4 territory code)
1552	GPA	Grade Point Average
1553	GPC	Global Path Cache
1554	GPIB	General-Purpose Instrumentation/Interface Bus
1555	GPO	General Post Office
1556	GPPC	Genetics and Public Policy Center
1557	GPR	Ground-Penetrating Radar
1558	GPS	General Problem Solver,Global Positioning System
1559	GPT	General Purpose Technology, Get paid to surf (an online business model)
1560	GQ	Equatorial 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]
1561	GR	Greece (FIPS 10-4 country code; ISO 3166 digram),Hail (METAR Code)
1562	GRAIL	Gravity Recovery and Interior Laboratory
1563	GRAS	Generally recognized as safe (FDA list)
1564	GRB	Gamma-Ray Burst
1565	GRC	Greece (ISO 3166 trigram)
1566	GRD	Grenada (ISO 3166 trigram)
1567	GRE	Graduate Record Examination,Greece (IOC and FIFA trigram,but not ISO 3166)
1568	grep	[search] Globally for Regular Expression,Print [lines]
1569	GRID	Gay-Related Immune Deficiency (original name of AIDS)
1570	GRid	Global Release Identifier,a music industry identifier from the RIAA and IFPI
1571	GriT	Girl raised in Texas (Woman presenting firm southern traits/beliefs)
1572	GRL	Greenland (ISO 3166 trigram)
1573	GRN	Grenada (IOC and FIFA trigram,but not ISO 3166),Goods Received Note
1574	Gs	Gigasecond
1575	GSA	U.S. General Services Administration
1576	GSD	Graphical Situation Display
1577	GSGB	(God send glamour boy 9-10/10)
1578	GSK	GlaxoSmithKline [good sexual karma]
1579	GSN	Game Show Network
1580	GSO	General Services Officer (U.S. Department of State)
1581	GSOH	Good Sense Of Humour
1582	GSP	Georges St-Pierre (Canadian MMA fighter)
1583	GSR	Gun Shot Residue
1584	GSS	Generic Security Services
1585	GSW	Gunshot wound
1586	GTD	Getting Things Done
1587	GTG	Got To Go (Internet chat)
1588	GTGN	Getty Thesaurus of Geographic Names
1589	GTK	Good To Know (Internet chat)
1590	GTM	Guatemala (ISO 3166 trigram)
1591	GU	Guam (postal symbol; ISO 3166 digram)
1592	GUF	French Guiana (ISO 3166 trigram)
1593	GUILT	Gangliated Utrophin Immuno Latency Toxin
1594	GULCR	Grupo de Usuarios de Linux de Costa Rica
1595	GUT	Grand Unification Theory
1596	GWARS	Ground Warfare System (simulation)
1597	GWAS	Grand Western Archery Society
1598	GWOT	Global War on Terrorism
1599	GXE	Gene-enivronment interaction
1600	GXM	Matrox Graphics eXpansion Module
1601	GY	Guyana (FIPS 10-4 country code; ISO 3166 digram)
1602	GZK	Greisen-Zatsepin-Kuzmin cut-off (cosmic ray energies)
1603	h	Hecto
1604	H	Henry
1605	H1	First half of the year
1606	H2	Second half of the year
1607	HAARP	High Frequency Active Auroral Research Program
1608	HAART	Highly Active Anti-Retroviral Therapy
1609	HAI	Human Awareness Institute
1610	HAL	Hardware Abstraction Layer
1611	HALO	High Altitude Low Opening (parachute jump)
1612	HAM	Amateur radio operator
1613	HANS	Head And Neck Support (device used in many race cars)
1614	HARM	High-speed Anti-Radiation Missile
1615	HAW	Heavy Antitank Weapon
1616	HAWK	Homing All the Way Killer (air defence system)
1617	HAZ	Heat-Affected Zone
1618	HAZMAT	Hazardous Materials
1619	HBCD	HexaBromoCycloDodecane
1620	HBO	Home Box Office
1621	HBR	Harvard Business Review
1622	HBT	Heterojunction Bipolar Transistor
1623	HBV	Hepatitis B Virus
1624	HCCI	Homogeneous Charge Compression Ignition
1625	HCF	Highest Common Factor
1626	HCSC	Higher Command and Staff Course
1627	HDL	High-Density Lipoprotein
1628	HDM	Human Decision-Making
1629	HDRA	Henry Doubleday Research Association
1630	He	Helium
1631	HE	High Explosive
1632	HEAT	High Explosive Anti-Tank (ammunition)
1633	HEBA	Hellenic Basketball Clubs Association
1634	HEER	High-Explosive Extended Range (ammunition)
1635	HEIC	Honourable East India Company
1636	HEMP	High-Altitude Electromagnetic Pulse
1637	HEOSS	High Earth Orbit Space Surveillance
1638	HEP	High-Explosive Plastic (ammunition)
1639	HEPA	High-Efficiency Particulate Air (filter)
1640	HESV	Heavy Engineering Support Vehicle
1641	HETT	Heavy Equipment Transporting Truck / Heavy Equipment Truck Tractor
1642	HEU	Highly Enriched Uranium
1643	Hf	Hafnium
1644	HF	High Frequency
1645	HFE	Human Fertilisation and Embryology (UK Act)
1646	HFE	The common-emitter current gain in a BJT transistor (also represented by βF). See: BJT
1647	HFEA	Human Fertilisation and Embryology Authority (UK)
1648	Hg	Mercury (Latin Hydrargyrum)
1649	HGC	UK Human Genetics Commission
1650	HGF	Human Growth Factor
1651	HGTV	Home & Garden Television
1652	HI	Hawaii (postal symbol)
1653	HIH	His (or Her) Imperial Highness
1654	HIM	His (or Her) Imperial Majesty
1655	HIMAD	High to Medium Altitude Air Defence (see also H/MAD)
1656	HIMEZ	High Altitude Missile Engagement Zone
1657	HIMYM	How I Met Your Mother
1658	HIPAA	U.S. Health Insurance Portability and Accountability Act
1659	Hipparcos	HIgh Precision Parallax COllecting Satellite
1660	Hird	Hurd of interfaces representing depth (cf. HURD)
1661	HiRISE	High Resolution Imaging Science Experiment
1662	HIT	Health Information Technology
1663	HIV	Human Immunodeficiency Virus
1664	HIWT	Hobart Institute of Welding Technology
1665	HJD	Heliocentric Julian Day
1666	HK	Hong Kong (ISO 3166 digram; FIPS 10-4 territory code)
1667	HKG	Hong Kong (ISO 3166 trigram)
1668	HKS	HyperKinetic Syndrome
1669	hL	Hectolitre
1670	HL	Holding Line
1671	HLL	High-Level Language
1672	HLN	Headline News
1673	HLOS	High Level Output Specification
1674	HM	Heard Island and McDonald Islands (ISO 3166 digram; FIPS 10-4 territory code)
1675	HMCE	Her/His Majesty's Customs and Excise (former UK government department; succeeded by HM Revenue and Customs)
1676	HMD	Heard and McDonald Islands (ISO 3166 trigram)
1677	HMF	HydroxyMethyl Furfural
1678	HMO	Health maintenance organization
1679	HMP	Her Majesty's Prison
1680	HMRC	Her/His Majesty's Revenue and Customs
1681	HMSO	Her Majesty's Stationery Office
1682	HMV	His Master's Voice
1683	HN	Honduras (ISO 3166 digram)
1684	HND	Honduras (ISO 3166 trigram)
1685	Ho	Holmium
1686	HO	Honduras (FIPS 10-4 country code)
1687	HOLLAND	Hope Our Love Lasts And Never Dies
1688	HOSTAC	Helicopter Operations from Ships Other Than Aircraft Carriers
1689	HOT	Highly Optimised Tolerance
1690	HOTAS	Hands on throttle-and-stick
1691	HOV	High Occupancy Vehicle
1692	hp	horse power
1693	HPA	UK Health Protection Agency
1694	HPCL	Hindustan Petroleum Corporation Limited
1695	HPLC	High Performance Liquid Chromatography
1696	HPT	High[er] Payoff Target
1697	HPV	Human Papilloma Virus
1698	HRBL	High-level Representation of Behavior Language (original name of the Herbal language)
1699	HRD	Human Resource Development
1700	HRF	High iness Forces
1701	HRH	His (or Her) Royal Highness
1702	HRM	His (or Her) Royal Majesty
1703	HRM	Human Resource Management
1704	HRT	Hormone Replacement Therapy
1705	Hs	Hassium
1706	HSBC	The Hong Kong and Shanghai Banking Corporation
1707	HSC	Higher School Certificate
1708	HSM	High School Musical
1709	HSMAD	Human Science/Modeling and Analysis Data
1710	HSN	Home Shopping Network
1711	HSPH	Harvard School of Public Health
1712	HSSI	High-Speed Serial Interface
1713	HST	see entry
1714	HTA	HyperText Application
1715	HTFU	Harden The Fuck Up
1716	HTH	Hope That Helps
1717	HTI	Haiti (ISO 3166 trigram)
1718	HTML	HyperText Markup Language
1719	HTR	Heated Towel Rail
1720	HTS	High-Temperature Superconducting wire
1721	HTTP	HyperText Transfer Protocol
1722	HU	Hungary (ISO 3166 digram; FIPS 10-4 country code)
1723	HUHA	Head up his/her ass (Marine salute; probably a backcronym)
1724	HUN	Hungary (ISO 3166 trigram)
1725	HURD	Hird of Unix-Replacing Daemons (cf. Hird)
1726	HV	Upper Volta (ISO 3166 digram; obsolete 1984)
1727	HVAP	High Velocity Armour Piercing (ammunition)
1728	HVHF	High velocity human factors
1729	HVM	High Velocity Missile
1730	HVO	Upper Volta (ISO 3166 trigram; obsolete 1984)
1731	HWM	Hardware morphing (computer graphics rendering)
1732	HXB	The glycoprotein Tenascian C
1733	HZ	Haze (METAR Code)
1734	Hz	Hertz
1735	IA	Iowa (postal symbol)
1736	IAAL	I Am A Lawyer
1737	IAB	International Association for Biologicals
1738	IAD	Ion Assisted Deposition
1739	IADS	Integrated Air Defence System
1740	IAEA	International Atomic Energy Agency
1741	IAF	{i} Industrial Areas Foundation
1742	IAFG	Information Assurance Focus Group
1743	IANA	Internet Assigned Numbers Authority
1744	IANAL	I Am Not A Lawyer
1745	IAS	Image Assessment System
1746	IASIP	It's Always Sunny in Philadelphia
1747	IATA	International Air Transport Association
1748	IATF	International Automotive Task Force
1749	IATSE	International Alliance of Theatrical Stage Employees
1750	IAUC	International Astronomical Union Circular
1751	IAW	In Accordance With
1752	IB	International Baccalaureate
1753	IBA	Important Bird Area
1754	IBD	Inflammatory Bowel Disease
1755	IBDM	Information Based Decision Making
1756	IBM	International Business Machines
1757	IBRD	International Bank for Reconstruction and Development (part of the World Bank)
1758	IBS	Irritable Bowel Syndrome
1759	ICANN	Internet Corporation for Assigned Names and Numbers
1760	ICAO	International Civil Aviation Organization
1761	ICBM	Intercontinental Ballistic Missile
1762	ICBN	International Code of Botanical Nomenclature
1763	ICE	In case of emergency, Immigration and Customs Enforcement
1764	ICES	International Council for the Exploration of the Sea
1765	ICF	Intelligent Community Forum
1766	ICMP	Internet Control Message Protocol
1767	ICNAF	International Commission for the Northwest Atlantic Fisheries (became NAFO in 1978)
1768	ICO	Intermediate Circular Orbit
1769	ICPE	International Conference on Pharmacoepidemiology,the annual conference of the International Society for Pharmacoepidemiology
1770	ICRAF	International Centre for Research in Agroforestry (a.k.a. World Agroforestry Centre since 2002)
1771	ICRISAT	International Crops Research Institute for the Semi-Arid Tropics
1772	ICRL	Individual Component Repair List
1773	ICRS	International Celestial Reference System
1774	ICSI	Intracytoplasmic Sperm Injection
1775	ICT	Information and communication technologies
1776	ICTH	Island Closest to Heaven/Hell Final Fantasy VIII
1777	ICV	Infantry Carrier Vehicle
1778	ICYMI	In Case You Missed It
1779	IDC	International Data Corporation
1780	IDDI	I don't do initialisms (see irony)
1781	IDGAF	I don't give a fuck
1782	IDK	I don't know
1783	IDL	Interface Definition Language
1784	IDN	Indonesia (ISO 3166 trigram)
1785	IEA	International Energy Agency
1786	IEC	International Electrotechnical Commission
1787	IED	Improvised Explosive Device
1788	IELTS	International English Language Testing System
1789	IER	Information Exchange Requirement
1790	IET	Initial Entry Training
1791	IET	Institution of Engineering and Technology
1792	IETF	Internet Engineering Task Force
1793	IEW	Intelligence and Electronic Warfare
1794	IFAB	International Football Association Board
1795	IFAH	International Federation for Animal Health
1796	IFAP	International Federation of Agricultural Producers
1797	IFO	Identified Flying Object (see also UFO)
1798	IFOV	Instantaneous Field of View
1799	IFPI	International Federation of Phonographic Industries
1800	IFRB	International Frequency Registration Board
1801	IFV	Infantry Fighting Vehicle
1802	IG	Inspector General
1803	IGNOU	Indira Gandhi National Open University
1804	IGS	International Ground Station
1805	IHH	Idiopathic Hypogonadotropic Hypogonadism
1806	IHO	International Hydrographic Organization
1807	IHR	Institute for Historical Review
1808	IHSI	Institutum Historicum Societatis Iesu (Jesuit Historical Institute)
1809	II	Two (in Roman numerals)
1810	IICA	Inter-American Institute for Cooperation on Agriculture
1811	IIE	Innovative Interstellar Explorer
1812	III	Three (in Roman numerals)
1813	IIRC	If I Recall/Remember Correctly
1814	IISS	International Institute for Strategic Studies
1815	IJN	Imperial Japanese Navy (World War II)
1816	IJWP	Interim Joint Warfare Publication
1817	ILDS	Improved Landmine Detection System
1818	ILO	International Labour Organization
1819	ILRI	International Livestock Research Institute
1820	ILY	I Love You [pronounced ILL-LEE]
1821	IMBD	International Migratory Bird Day
1822	IMDb	Internet Movie Database
1823	IME	In My Experience
1824	IMHO	In My Humble/Honest Opinion
1825	IML	International Mister Leather
1826	IMNSHO	In My Not So Humble Opinion
1827	IMPAC	International Merchant Purchase Authorization Card
1828	IMPACT	International Medical Products Anti-Counterfeiting Taskforce
1829	IMPATT	IMPact Avalanche Transit Time diode
1830	IMPT	Institute of Maxillofacial Prosthetists and Technologists
1831	IMRL	Individual Material iness List
1832	IMRO-Internal Macedonian Revolutionary Organization	Irish Music Rights Organisation
1833	IMsL	International Ms. Leather
1834	IMT	Integrated Management Tool
1835	IMU	International Mathematical Union
1836	In	Indium
1837	INA	Immigration and Nationality Act
1838	INAS	International Near-Earth Asteroid Survey
1839	INCITS	InterNational Committee for Information Technology Standards
1840	IND	India (ISO 3166 trigram)
1841	INDIGO	(U.S.) INtelligence DIvision Gaming Operation
1842	inet	the Internet
1843	INFORMS	(U.S.) Institute for Operations Research and the Management Sciences
1844	INFOSEC	Information Security
1845	INLA	Irish National Liberation Army
1846	INMARSAT	International Maritime Satellite organization
1847	INRIA	Institut national de recherche en informatique et en automatique
1848	INS	Immigration and Naturalization Service
1849	InSAR	Interferometric synthetic aperture radar
1850	INST	Information Standards and Technology
1851	INTERFET	International Force for East Timor
1852	INTSUM	Intelligence Summary
1853	IO	British Indian Ocean Territory (ISO 3166 digram; FIPS 10-4 territory code)
1854	IOT	British Indian Ocean Territory (ISO 3166 trigram)
1855	IPB	Intelligence Preparation of the Battlefield
1856	IPL	Inferior Parietal Lobule
1857	IPO	Initial Public Offering
1858	IPT	Integrated Product/Project Team
1859	IPTS	Institute for Prospective Technological Studies
1860	IPTV	Internet Protocol TeleVision
1861	IPW	Interrogation of Prisoners of War
1862	Ir	Iridium
1863	IRAD	Internal Research and Development
1864	IRAN	(I) Inspect and Repair As Necessary
1865	IRAS	Infrared Astronomical Satellite
1866	IRB	International Rugby Board
1867	IRBM	Intermediate Range Ballistic Missile
1868	IREA	Intermountain Rural Electric Association
1869	IRINN	Islamic Republic of Iran News Network
1870	IRL	Ireland (ISO 3166 trigram),Industrial Research Limited,Indy Racing League,In real life
1871	IRN	Iran (ISO 3166 trigram)
1872	IRO	International Refugee Organisation
1873	IRQ	Iraq (ISO 3166 trigram)
1874	IRS	U.S. Internal Revenue Service
1875	IRST	Infra-red Search and Track
1876	ISAAA	International Service for the Acquisition of Agri-biotech Applications
1877	ISAR	Inverse SAR (Synthetic Aperture Radar)
1878	ISB	Intermediate Staging Base
1879	ISBN	International Standard Book Number (ISO 2108)
1880	ISCCP	International Satellite Cloud Climatology Project
1881	ISCII	Indian Standard Code for Information Interchange
1882	ISDN	Integrated Services Digital Network
1883	ISEF	Intel International Science and Engineering Fair
1884	ISEN	Internet Search Environment Number
1885	ISF	Internal Security Force
1886	ISIL	Islamic State of Iraq and the Levant
1887	ISIS	Institute for Science and International Security, or: Islamic State of Iraq and Syria
1888	ISL	Iceland (ISO 3166 trigram)
1889	ISLN	International Standard Lawyer Number (used initially by LexisNexis Martindale-Hubbell)
1890	ISMB	International Society of Matrix Biologists
1891	ISMC	Intelligent Sounding Meaningless Conversation
1892	ISOGP	Indian Society of Orthodontics for General Practitioners [2]
1893	ISPE	International Society for Pharmacoepidemiology
1894	ISRO	Indian Space Research Organisation
1895	ISSCR	International Society for Stem Cell Research
1896	ISSN	International standard serial number (ISO 3297)
1897	ISTC	Institute of Scientific and Technical Communications (UK)
1898	ISTS	Intel Science Talent Search
1899	ITA	Italy (ISO 3166 trigram)
1900	ITAG	Inertial Terrain-Aided Guidance
1901	ITALY	I'll Truly Always Love You
1902	ITAS	Improved Target Acquisition Sight
1903	ITC	InferoTemporal Cortex (neurophysiology)
1904	ITCZ	Intertropical Convergence Zone
1905	ITEC	Information Technology Exposition & Conference
1906	ITEMS	Interactive Tactical Environment Management System
1907	ITER	International Thermonuclear Experimental Reactor
1908	ITF	International Tennis Federation
1909	ITK	In The Know
1910	ITN	Independent Television News (British)
1911	ITT	International Telephone and Telegraph (U.S.)
1912	ITTO	International Tropical Timber Organization
1913	IUCN	International Union for the Conservation of Nature and Natural Resources (World Conservation Union)
1914	Iveco	Industrial Vehicles Corporation
1915	IVF	In Vitro Fertilisation
1916	IVI	Interchangeable Virtual Instrument
1917	IVIS	Inter-Vehicle Information System
1918	IVL	Inter-Visibility Line
1919	IVM	In Vitro [Oocyte] Maturation
1920	IVO	In Vicinity Of
1921	IW	Information Warfare
1922	IWARS	Infantry Warrior Simulation
1923	IWC	International Whaling Commission
1924	IWW	Industrial Workers of the World
1925	IX	Nine (in Roman numerals)
1926	IXT	IntraText digital library; IntraText lexical hypertext
1927	IY	Saudi-Iraqi neutral zone (FIPS 10-4 territory code; obsolete 1993)
1928	IZ	Iraq (FIPS 10-4 country code)
1929	J	Joule
1930	J1	Joint [Manpower &] Personnel Directorate
1931	J2	Joint Intelligence Directorate
1932	J3	Joint Operations Directorate
1933	J4	Joint Logistics Directorate
1934	J5	Joint Strategic Plans & Policy Directorate
1935	J7	Joint Operational Plans & Interoperability Directorate
1936	JA	Japan (FIPS 10-4 country code)
1937	JAFT	Just A Field Test
1938	JAL	Japan Airlines
1939	JALLC	Joint Analysis and Lessons Learned Centre (NATO)
1940	JAM	Jamaica (ISO 3166 trigram)
1941	JAMA	Journal of the American Medical Association
1942	JANET	Joint Academic Network
1943	JATO	Jet-Assisted Take-Off
1944	JB	Jail Bait
1945	JB	Junior Branch
1946	JBFSA	Joint Blue Force Situational Awareness
1947	JCDB	Joint Common Data Base
1948	JCDS	Joint Chiefs of the Defence Staff
1949	JCIDS	Joint Capabilities Integration and Development System
1950	JCL	Job Control Language
1951	JCP	Java Community Process
1952	JCS	Joint Chiefs of Staff
1953	JCW	Juggalo Championship Wrestling
1954	JDBC	Java Data Base Connectivity
1955	JDEM	Joint Dark Energy Mission
1956	JDL	Jewish Defense League
1957	JE	Jersey (FIPS 10-4 territory code)
1958	JEFX	Joint Expeditionary Force eXperiment
1959	JET	Joint European Torus
1960	JEZ	Joint Engagement Zone
1961	JFACC	Joint Force Air Component Commander
1962	JFACTSU	U.S. Joint Forward Air Control Training and Standards Unit
1963	JFC	Joint Force Commander
1964	JFK	John Fitzgerald Kennedy or the airport named after him.
1965	JFLCC	Joint Force Land Component Commander
1966	JFMCC	Joint Force Maritime Component Commander
1967	JFO	Journal of Field Ornithology
1968	JFSOCC	Joint Force Special Operations Component Commander
1969	JFTX	Joint Field Training Exercise
1970	JH	Japan Highway Public Corporation
1971	JH	Jharkhand (Indian state code)
1972	JI	Joint Implementation
1973	JIB	Joint Information Bureau
1974	JIC	Joint Intelligence Centre
1975	JINI	Java Intelligent Network Infrastructure
1976	JITC	Joint Interoperability Test Command
1977	JIVE	Joint Institute for VLBI (Very Long Baseline Interferometry) in Europe
1978	JJAP	Japanese Journal of Applied Physics
1979	JL	Japan Airlines (IATA airline designator)
1980	JLA	Justice League of America
1981	JM	Jamaica (FIPS 10-4 country code; ISO 3166 digram)
1982	JMS	Java Message Service
1983	JN	Jan Mayen Island (FIPS 10-4 territory code)
1984	JNI	Java Native Interface
1985	JNLP	Java Network Launch Protocol
1986	JO	Jordan (FIPS 10-4 country code; ISO 3166 digram)
1987	JOA	Joint Operations Area
1988	JOPES	Joint Operations Planning and Execution System
1989	JOR	Jordan (ISO 3166 trigram)
1990	JOTS	Joint Operations Tactical System
1991	JPL	Jet Propulsion Laboratory
1992	JPN	Japan (ISO 3166 trigram)
1993	JPOW	Joint Project Optic Windmill
1994	JRDF	Joint Rapid Deployment Forces
1995	JRE	Java Runtime Environment
1996	JREF	James Randi Educational Foundation
1997	JROC	Joint Requirements Oversight Council
1998	JROCM	JROC Memorandum
1999	JRRF	Joint Rapid Reaction Force
2000	JRSAI	Journal of the Royal Society of Antiquaries of Ireland
2001	JSAP	Japan Society of Applied Physics
2002	JSCSC	Joint Services Command and Staff College
2003	JSEAD	Joint Suppression of Enemy Air Defence (see SEAD)
2004	JSF	Joint Strike Fighter
2005	JSIMS	Joint Simulation System
2006	JSOA	Joint Special Operations Area
2007	JSOTF	Joint Special Operations Task Force
2008	JSP	JavaServer Page
2009	JSP	Joint Services Publication
2010	JSR	Java Specification Request
2011	JSS	Joint Support Ship Project
2012	JTC	Joint Training Confederation
2013	JTF	Joint Task Force
2014	JTFEX	Joint Task Force Exercise
2015	JTLS	Joint Theater Level Simulation
2016	JTMD	Joint Theatre Missile Defence
2017	JTN	Johnston Atoll (ISO 3166 trigram; obsolete 1986)
2018	JU	Juan de Nova Island (FIPS 10-4 territory code)
2019	JUGFET	JUnction Gate Field-Effect Transistor
2020	JUICE	JUpiter ICy Moon Explorer
2021	JUO	Joint Urban Operations
2022	JV	Joint Venture,Junior Varsity
2023	JW	Jehovah's Witnesses
2024	JWARS	Joint Warfare System (simulation)
2025	JWP	Joint Warfare Publication
2026	JY	Japanese Yen
2027	JZ	Joint Zone
2028	K	Kelvin,Potassium (Latin Kalium),Tanker (aircraft designation code)
2029	k	Kilo-
2030	K	picokelvin
2031	K9	Canine Police Unit
2032	Ka	Kamov Design Bureau
2033	kA	Kiloampere
2034	KA	Knowledge Acquisition,Karnataka (Indian state code)
2035	KAF	Kandahar Air Field
2036	KANUKOKA	Kalaallit Nunaanni Kommunit Kattuffiannit (Kalaallisut, Greenlandic Communities Association
2037	KARNAC	Knowledge Aided Retrieval in Activity Context
2038	KARR	Knight Automated Roving Robot (Knight Rider character)
2039	KATUSA	Korean Augmentation To United States Army
2040	KAZ	Kazakhstan (ISO 3166 trigram)
2041	KBE	Knight Commander of the Order of the British Empire
2042	KBO	Kuiper Belt Object
2043	KBVB	Koninklijke Belgische Voetbalbond (Dutch for Royal Belgian Football Association)
2044	kC	Kilocoulomb
2045	KCK	Kansas City,Kansas,Koma Civakên Kurdistan (Kurdish, Union of Communities in Kurdistan)
2046	KCL	King's College London
2047	KCMO	Kansas City,Missouri (pronounced: K-C-Moe)
2048	KCS	Kansas City Southern Railway (AAR reporting mark)
2049	KD	Kawasaki Disease,Kraft Dinner
2050	KE	Kenya (FIPS 10-4 country code; ISO 3166 digram),Kinetic Energy,Knowledge Engineering
2051	KEDO	Korean Peninsula Energy Development Organization
2052	KEN	Kenya (ISO 3166 trigram)
2053	KERA	Kentucky Education Reform Act (of 1990)
2054	kerma	Kinetic Energy Released in MAterial / in MAtter / per unit MAss
2055	KESR	Kent and East Sussex Railway.
2056	KET	Kentucky Educational Television,Key English Test
2057	kF	Kilofarad
2058	KFC	Kentucky Fried Chicken
2059	KFOR	UN Kosovo Force
2060	KFUPM	King Fahd University of Petroleum & Minerals
2061	KG	Kyrgyzstan (FIPS 10-4 country code; ISO 3166 digram)
2062	KGO	Knight of the Guelphic Order of Hanover
2063	KGZ	Kyrgyzstan (ISO 3166 trigram)
2064	KH	Cambodia (ISO 3166 digram)
2065	kH	Kilohenry
2066	KHL	Kontinental Hockey League
2067	KHM	Cambodia (ISO 3166 trigram)
2068	KHz	Kilohertz
2069	Ki	Kibi
2070	KI	Kiribati (ISO 3166 digram)
2071	KIA	Killed In Action
2072	KIDS	Knowledge-based Integrated Design System
2073	KIR	Kiribati (ISO 3166 trigram)
2074	KISS	Keep It Simple,Stupid / Keep It Short and Simple,Korean Intelligence Support System
2075	KIT	Keep In Touch
2076	KITECH	Korean Institute of Industrial Technology
2077	KITT	Knight Industries Two Thousand, Knight Industries Three Thousand
2078	kJ	Kilojoule
2079	kK	Kilokelvin
2080	KKK	Ku Klux Klan
2081	kL	Kilolitre
2082	KLENOT	KLEť Observatory Near Earth and Other unusual objects observations Team and Telescope
2083	KLOC	Kilo Lines Of Code
2084	KM	Comoros,Knowledge Management
2085	kN	Kilonewton
2086	KNA	Saint Kitts and Nevis (ISO 3166 trigram)
2087	KNVB	Koninklijke Nederlandse Voetbal Bond (Dutch for Royal Dutch Football Association)
2088	KO	Knocked Out
2089	KOR	Republic of Korea (ISO 3166 trigram)
2090	KP	Kim Possible
2091	KPMG	Klynveld,Peat,Marwick,Goerdeler
2092	KPNO	Kitt Peak National Observatory
2093	KQ	Kenya Airways (IATA airline designator), Kingman Reef (FIPS 10-4 territory code)
2094	KR	Kiribati (FIPS 10-4 country code), Republic of Korea (ISO 3166 digram)
2095	Kr	Krypton
2096	KS	Kansas (postal symbol), Republic of Korea (FIPS 10-4 country code)
2097	kS	Kilosiemens
2098	KSC	Kennedy Space Center
2099	KSI	Killed or Seriously Injured
2100	KSU	Kansas State University
2101	KT	Christmas Island (FIPS 10-4 territory code), Knight of the Order of the Thistle, Knights Templar
2102	kT	Kilotesla
2103	KTS	Knight of the Tower and Sword (of Portugal)
2104	KU	Kuwait (FIPS 10-4 country code)
2105	KUW	Kuwait (UNDP country code,IOC and FIFA trigram,but not ISO 3166)
2106	kV	Kilovolt
2107	KV	Kosovo
2108	kW	Kilowatt
2109	KW	Kuwait (ISO 3166 digram)
2110	KWB	Kids' WB!
2111	KWT	Kuwait (ISO 3166 trigram)
2112	KX	Cayman Airways (IATA airline designator)
2113	KY	Cayman Islands (ISO 3166 digram), Kentucky (postal symbol)
2114	KZ	Kazakhstan (FIPS 10-4 country code; ISO 3166 digram)
2115	KZN	KwaZulu-Natal
2116	La	Lanthanum
2117	LA	Laos (FIPS 10-4 country code; ISO 3166 digram), Louisiana (postal symbol), Los Angeles
2118	LAAS	Local Area Augmentation System, Los Angeles Astronomical Society
2119	LAB	Logistics Assault Base
2120	LabVIEW	Laboratory Virtual Instrumentation Engineering Workbench
2121	LACMA	Los Angeles County Museum of Art
2122	LAD	Laser Aiming Device
2123	LADW	Local Air Defence Warning
2124	LAESI	Local Authority & Emergency Service Information
2125	LANL	Los Alamos National Laboratory
2126	LAO	Laos (ISO 3166 trigram)
2127	LAR	Light Armoured Reconnaissance, Logistics Assistance Representative
2128	LARC	Livermore Advanced Research Computer (cf. LLNL)
2129	LARP	Live-Action Role-Playing
2130	Laser	Light Amplification by Stimulated Emission of Radiation (cf. Maser)
2131	LAT	Lowest Astronomical Tide (nautical charts),Licensed Athletic Trainer (used in many of the United States; see www.oata.org)
2132	LATA	Local Access Transport Area
2133	LATCH	Lower Anchors and Tethers for Children (U.S. standard for attachment points for child safety seats in passenger cars)
2134	LAV	Land Assault Vehicle, Light Armoured Vehicle, Lymphadenopathy-Associated Virus
2135	LAW	Light Antitank Weapon
2136	LAX	Los Angeles International Airport, The Latin American Xchange (professional wrestling)
2137	LB	Lebanon (ISO 3166 digram)
2138	LBH	Light Battlefield Helicopter, Lyman-Birge-Hopfield bands
2139	LBJ	Lady Bird Johnson,LeBron James,Light Bulb Joke,Little Beagle Johnson (the dog owned by Lyndon and Lady Bird Johnson),Lyndon Baines Johnson
2140	LBN	Lebanon (ISO 3166 trigram)
2141	LBNL	Lawrence Berkeley National Laboratory
2142	LBR	Liberia (ISO 3166 trigram)
2143	LBS	Location-Based Services
2144	LBT	Large Binocular Telescope
2145	LBW	Leg Before Wicket
2146	LBY	Libya (ISO 3166 trigram)
2147	LCA	Saint Lucia (ISO 3166 trigram)
2148	LCC	Land Component Commander
2149	LCCP	Light Contingency Communications Package
2150	LCD	Liquid Crystal Display
2151	LCM	Least/Lowest Common Multiple
2152	LCS	League of Legends Championship Series
2153	LDA	Lateral Drift Apparatus (paratroops)
2154	LDC	Lesser Developing/Developed Country
2155	LDL	Low-Density Lipoprotein
2156	LDV	Local Defence Volunteers (British Home Guard)
2157	LDW	Lane Departure Warning (ADAS)
2158	LE	Lebanon (FIPS 10-4 country code)
2159	LEC	Local Exchange Carrier
2160	LED	Light-Emitting Diode
2161	LEGAD	Legal Advice
2162	Legs	level emotion gad speed
2163	LEMOSS	Long-Endurance MObile Submarine Simulator
2164	LEN	Large Extension Node
2165	LEP	Large Electron-Positron collider
2166	LER	Loss-Exchange Ratio
2167	LEU	Low-Enriched Uranium
2168	LF	Low Frequency
2169	LFO	Low Frequency Oscillation / Oscillator
2170	LFTR	Liquid fluoride thorium reactor
2171	LG	Latvia (FIPS 10-4 country code)
2172	LGB	Lesbian,Gay,Bisexual
2173	LGBT	Lesbian,Gay,Bisexual,Transgender
2174	LGBTQ	Lesbian,Gay,Bisexual,Transgender,Queer
2175	LGLO	Love God,Love Others
2176	LGM	Little Green Men
2177	LGS	Landsat Ground Station
2178	LHC	Large Hadron Collider
2179	LHS	Left Hand Side
2180	Li	Lithium
2181	LIBOR	London Interbank Offered Rate
2182	LIBS	Laser Induced Breakdown Spectroscopy
2183	LIE	Liechtenstein (ISO 3166 trigram)
2184	LIGO	Laser Interferometer Gravitational-Wave Observatory
2185	LINEAR	Lincoln Near-Earth Asteroid Research
2186	LISA	Laser Interferometer Space Antenna
2187	LIVE	Liquid Inertial Vibration Eliminator
2188	LJJ	Lord Justices of Appeal
2189	LK	Sri Lanka (ISO 3166 digram)
2190	LKA	Sri Lanka (ISO 3166 trigram)
2191	LKR4	Linkwitz-Riley 4th order (audio crossover type)
2192	LLAD	Low Level Air Defence
2193	LLB	Legum Baccalaureus (Latin: Bachelor of Laws)
2194	LLC	Limited Liability Company
2195	LLLTV	Low-Light Level Television
2196	LLNL	Lawrence Livermore National Laboratory
2197	LLP	Limited Liability Partnership
2198	LLTR	Low-Level Transit Route
2199	LMAO	Laughing My Ass Off (Internet shorthand)
2200	LMB	Lick My Balls
2201	LMFAO	Laughing My F**king Ass Off (Internet shorthand,electro-hop duo)
2202	LMN	Lifetime Movie Network
2203	LMS	Like My Status (Internet shorthand)
2204	LMV	() Light Motor Vehicle
2205	LNER	London and North Eastern Railway
2206	LNG	Liquefied Natural Gas
2207	LNO	Liaison Officer
2208	LNR	Ligue Nationale de Rugby (French for: 'National Rugby League')
2209	LO	Slovakia (FIPS 10-4 country code)
2210	LOA	Limit Of Advance
2211	LOC	Level of Operational Capability, Limited Operational Capability
2212	LOD	Limit of Detection,see Detection limit
2213	LoD	Lines of Development (UK)
2214	LOFAR	Low Frequency Analysis and Recording
2215	LOGPAC	Logistics Package
2216	LOL	Laughing Out Loud (Internet shorthand)
2217	LOMEZ	Low Altitude Missile Engagement Zone
2218	LONEOS	Lowell Observatory Near-Earth-Object Search
2219	LOOGY	Lefty One-Out GuY,a sometimes pejorative nickname for the left-handed specialist in baseball
2220	LORTID	LOng Range Target IDentification
2221	LOS	Line Of Sight
2222	LOSAT	Line-Of-Sight Anti-Tank (missile)
2223	LOTA	Licentiate of the Orthodontic Technicians Association
2224	LOTIS	Livermore Optical Transient Imaging System
2225	LOTS	Logistics Over-The-Shore
2226	LP	Linkin Park,Linkup Point,Listening Post,Long Playing record,Louisiana Pacific (cf. LP Field)
2227	LPC	Linear Predictive Coding
2228	LPD	Landing Platform Dock (Navy hull classification),Low Probability of Detection
2229	LPG	Liquefied Petroleum Gas (cf. LNG)
2230	LPI	Low Probability of Intercept
2231	LPS	Landsat Processing System,LipoPolySaccharide
2232	LQ	Palmyra Atoll (FIPS 10-4 territory code)
2233	Lr	Lawrencium
2234	LR	Liberia (ISO 3166 digram)
2235	LRC	Logistics iness Center
2236	LRGW	Long-Range Guided Weapon
2237	LRICBM	Limited Range ICBM
2238	LRIP	Low Rate Initial Production
2239	LRP	Logistics Release Point
2240	LRPE	Long-Range Planning Element
2241	LRS	Long Range Surveillance
2242	LRU	Line-Replaceable Unit
2243	LSAT	Law School Admission Test (often pronounced as 'el-SAT')
2244	LSI	Large-Scale Integration
2245	LSIF	Labour Sponsored Investment Fund
2246	LSND	Liquid Scintillator Neutrino Detector
2247	LSO	Lesotho (ISO 3166 trigram)
2248	LSST	Large Synoptic Survey Telescope
2249	LST	Landing Ship,Tank (World War II; also known,not entirely affectionately,as 'Large Slow Target')
2250	LSVW	Light Support Vehicle,Wheeled
2251	LT	Lesotho (FIPS 10-4 country code),Lithuania (ISO 3166 digram)
2252	Lt	Lieutenant
2253	LtC	Lieutenant-Colonel (U.S.)
2254	LTC	Long-Term Costing
2255	Ltd	Limited
2256	LTDP	Long-Term Defence Plan
2257	LTG	Lieutenant General,Lightning (METAR Code)
2258	LTI	Linear Time-Invariant
2259	LTM	Acronym for Laughing To Myself
2260	LTP	Long-Term Potentiation
2261	LTU	Lithuania (ISO 3166 trigram)
2262	LU	Acronym Love You
2263	LU	Loonatics Unleashed
2264	Lu	Lutetium
2265	LUCA	Last Universal Common Ancestor
2266	LUG	Linux User Group
2267	LULU	Locally Unwanted Land Use (urbanism)
2268	LUT	Limited User Test (ing),Local User Terminal
2269	LUVW	Light Utility Vehicle,Wheeled
2270	LUX	Luxembourg (ISO 3166 trigram)
2271	LV	Las Vegas,Latvia (ISO 3166 digram),Launch Vehicle,Leading Vehicle,Leave,Left Ventricle,Level Valve,Linking Verb,Liverpool Victoria
2272	LVA	Latvia (ISO 3166 trigram)
2273	LVAD	Left Ventricular Assist Device,Low-Velocity Airdrop
2274	LVEF	Left Ventricular Ejection Fraction
2275	LW	Land Warrior,Low Water (nautical charts)
2276	Lw	Lawrencium (obsolete 1963)
2277	LWR	Laser warning receiver
2278	LWRC	Land Warfare Resources Corporation
2279	LWS	Land Warrior System
2280	LX	Electrics (theatrical term)
2281	LX	Luxembourg (amateur radio ITU prefix),Swiss International Air Lines (IATA code)
2282	LY	Libya (FIPS 10-4 country code; ISO 3166 digram),Lithuania (amateur radio ITU prefix)
2283	LYAO	Laugh Your Ass Off
2284	LYLAS	Love You Like A Sister
2285	LZ	Bulgaria (amateur radio ITU prefix),Landing Zone
2286	M	Mega-,One thousand (in Roman numerals)
2287	m	Metre,Milli
2288	MA	Madagascar (FIPS 10-4 country code),Marijuana Anonymous,Master of Arts,Massachusetts (postal symbol),Megaampere,Morocco (ISO 3166 digram)
2289	Ma	Megaannum
2290	mA	Milliampere
2291	MAA	Mathematical Association of America
2292	MAAC	Metro Atlantic Athletic Conference
2293	MACE	Multi-Agent Computing Environment
2294	MACHO	MAssive Compact Halo Object
2295	MADD	Mothers Against Drunk Driving,MyoAdenylate Deaminase Deficiency,Multiply-Add
2296	MAF	Maintenance Action Form
2297	MAGIC	Major Atmospheric Gamma-ray Imaging Cherenkov (telescope)
2298	MAGNETAR	Metaprogrammable AGent NETwork ARchitecture
2299	MAGTF	Marine Air-Ground Task Force
2300	Mahasz	Magyar Hanglemezkiadók Szövetsége (Hungarian for: 'Association of Hungarian Record Companies')
2301	MALD	Miniature Air-Launched Decoy
2302	MANPADS	MAN-Portable Air Defence System
2303	MANPRINT	MANpower and PeRsonnel INTegration
2304	MAO	Molėtų astronomijos observatorija (Moletai Astronomical Observatory),MonoAmine Oxidase
2305	MAOI	Monoamine oxidase inhibitor
2306	MAPS	Monitoring Avian Productivity and Survivorship
2307	MAR	Morocco (ISO 3166 trigram)
2308	MarBEF	Marine Biodiversity and Ecosystem Functioning
2309	MARCENT	United States Marine Forces Central Command
2310	MARFORCC	Marine Force Component Commander
2311	MASAS	Monte Agliale Supernovae and Asteroid Survey
2312	Maser	Microwave Amplification by Stimulated Emission of Radiation
2313	MASH	Mobile Army Surgical Hospital
2314	MASINT	Measurement And Signature Intelligence
2315	MAVS	Mobile Artillery Vehicle System
2316	MBBL	(U.S. Armor Center) Mounted Battlespace Battle Laboratory
2317	MBCC	Migratory Bird Conservation Commission (U.S.)
2318	MBCS	Multi-Byte Character Set
2319	MBI	Moody Bible Institute
2320	MBIDST	Member of the British Institute of Dental and Surgical Technologists
2321	MBM	Meat and Bone Meal
2322	MBT	Main Battle Tank
2323	MBTI	Myers-Briggs Type Indicator
2324	mC	Millicoulomb
2325	MCDL	Model Composition Definition Language
2326	MCFT	Modified Compression Field Theory
2327	MCG	Melbourne Cricket Ground
2328	MCIS	Mellon Collie and the Infinite Sadness
2329	MCM	Mine Counter-Measures
2330	MCMV	Mine Counter-Measure Vessel
2331	MCR	My Chemical Romance
2332	MCSF	Marine Corps Security Forces
2333	MCT	Movement Control Team
2334	MCTIS	Mounted Co-operative Target Identification System
2335	Md	Mendelevium
2336	MDNA	Madonna's 12th studio album title (2012)
2337	MDO	Membership Driven Organisation
2338	MDP	Markov Decision Process
2339	MDT	Mountain Daylight Time (UTC-6 hours)
2340	MDV	Maldives (ISO 3166 trigram)
2341	Me	Messerschmitt
2342	MEAC	Mid-Eastern Athletic Conference (ME-ac)
2343	MECO	Main engine cutoff (NASA code for point in Space Shuttle assent when three main engines are shut down prior to External Tank (ET) separation)
2344	MEDEVAC	Medical evacuation
2345	MEDS	Mission Essential Data Set
2346	MEG	MagnetoEncephaloGraphy
2347	MELT	Metallic Line/Loop Test (ing)
2348	MEMS	Microelectromechanical System
2349	MER	Mars Exploration Rover
2350	MERL	Mitsubishi Electric Research Laboratories
2351	MES	Manufacturing Execution Systems
2352	METAR	[Meteorological] Aviation Routine weather report
2353	METOC	Meteorological and Oceanographic
2354	MeV	Megaelectronvolt
2355	MEX	Mexico (ISO 3166 trigram)
2356	MEZ	Missile Engagement Zone
2357	mF	Millifarad
2358	MGPAM	My Gym Partner's a Monkey
2359	MGS	Mobile Gun System
2360	mH	Millihenry
2361	MHC	Major Histocompatibility Complex
2362	MHHW	Mean Higher High Water (nautical charts)
2363	MHL	Marshall Islands (ISO 3166 trigram)
2364	MHLW	Mean Higher Low Water (nautical charts)
2365	MHRA	(UK) Medicines and Healthcare products Regulatory Agency
2366	MHW	Mean High Water (nautical charts)
2367	MHWN	Mean High Water Neaps (nautical charts)
2368	MHWS	Mean High Water Springs (nautical charts)
2369	MHz	Megahertz
2370	Mi	Mebi
2371	MIA	Missing In Action
2372	MICLIC	Mine Clearing Line Charge
2373	MICOM	Missile Command
2374	MID	Midway Islands (ISO 3166 trigram; obsolete 1986)
2375	MIDAS	Man-machine Integration Design and Analysis System
2376	MIDI	Musical Instrument Digital Interface
2377	MIDS	Multi-Function Information Distribution System
2378	MIFG	Shallow Fog (METAR Code)
2379	MIKE	Monitoring of Illegal Killing of Elephants
2380	MIL	Man-In-the-Loop
2381	MILC	Mirrorless interchangeable-lens camera
2382	MILF	Mother I'd Like to Fuck
2383	MIMOSA	MIcroMeasurements Of Satellite Acceleration
2384	MIMPT	Member of the Institute of Maxillofacial Prosthetists and Technologists
2385	MIRA	MILAN Infra-Red Acquisition (thermal sight)
2386	MIRV	Multiple Independent Reentry Vehicle
2387	MISREP	Mission Report
2388	MISSI	Multilevel Information System Security Initiative
2389	MITL	Man-In-The-Loop
2390	MITS	see entry
2391	mJ	Millijoule
2392	MJD	Modified Julian Day
2393	mK	Millikelvin
2394	MKG	Michael Kidd-Gilchrist (American basketball player)
2395	MKSA	Metre-Kilogram-Second-Ampere (system of units)
2396	mL	Millilitre
2397	MLB	Major League Baseball
2398	MLC	Member of the Legislative Council (in India)
2399	MLE	Maximum likelihood estimation
2400	MLHW	Mean Lower High Water (nautical charts)
2401	MLI	Mali (ISO 3166 trigram)
2402	MLL	Major League Lacrosse
2403	MLLW	Mean Lower Low Water (nautical charts)
2404	MLP	My Little Pony
2405	MLRS	Multiple-Launch Rocket System
2406	MLT	Malta (ISO 3166 trigram)
2407	MLW	Mean Low Water (nautical charts)
2408	MLWN	Mean Low Water Neaps (nautical charts)
2409	MLWS	Mean Low Water Springs (nautical charts)
2410	Mm	Megametre
2411	mm	Millimetre
2412	MMEV	Multi-Mission Effects Vehicle
2413	MMI	Magical MonkeyZ Inc.
2414	MMI	Man-Machine Interface
2415	MMI	McLean Meditation Institute
2416	MMIC	McLean Meditation Institute Certified
2417	MMO	Massively Multiplayer Online (computer game)
2418	MMOR	Master of Management in Operations Research
2419	MMORPG	Massively multiplayer online role-playing game
2420	MMPR	Mighty Morphin Power Rangers
2421	MMS	Multimission Modular Spacecraft
2422	Mn	Manganese
2423	mN	Millinewton
2424	MNB	Multinational Brigade
2425	MNE	Montenegro (ISO 3166 trigram)
2426	MNMF	Multi-National Maritime Force
2427	MNP	Northern Mariana Islands (ISO 3166 trigram)
2428	MNS	Mission Needs Statement
2429	Mo	Molybdenum
2430	MOA	Museum of Art (Brigham Young University)
2431	MOCAS	Mechanization Of Contract Administration Services
2432	MoD	Ministry of Defence (United Kingdom) and various other countries
2433	modem	Modulator-Demodulator
2434	Moe	Marvel of entertainment
2435	MOE	Measure Of Effectiveness
2436	MOF	Ministry of Finance (Japan)
2437	MOFA	Ministry of Foreign Affairs (Japan)
2438	MOID	Minimum Orbital Intersection Distance
2439	MOJWA	Movement for Oneness and Jihad in West Africa
2440	MOLO	Mobile Other Licensed Operator (UK)
2441	MOM	Master's Degree in Oriental medicine
2442	MOM	Message Oriented Middleware
2443	MoM	Multiple of the median
2444	MoMA	Museum of Modern Art (NYC)
2445	MOND	Modified Newtonian Dynamics
2446	MOO	Measure Of Outcome
2447	MOPP	Mission-Oriented Protective Posture
2448	MORP	Meteorite Observation and Recovery Project
2449	MOSFET	Metal-Oxide-Semiconductor Field-Effect Transistor
2450	MOT	Ministry of Transport (UK)
2451	MOTA	Member of the Orthodontic Technicians Association
2452	MOTESS	Moving Object and Transient Event Search System
2453	MOU	Memorandum Of Understanding
2454	MOW	Maintenance of way (also MW)
2455	MOZ	Mozambique (ISO 3166 trigram)
2456	MPa	Megapascal
2457	mPa	Millipascal
2458	MPAA	Motion Picture Association of America
2459	MPEC	Minor Planet Electronic Circular
2460	MPEG	Motion Pictures (Coding) Experts Group
2461	MPEV	Multi-Purpose Engineering Vehicle
2462	MPF	Maritime Prepositioning Force
2463	MPFC	Medial PreFrontal Cortex
2464	MPG	Miles Per Gallon
2465	MPMC	Medial PreMotor Cortex
2466	MPSI	Member of the Pharmaceutical Society of Ireland
2467	MPSoC	MultiProcessor System-on-Chip
2468	MPSRON	Maritime Propositioning Ship Squadron
2469	MR	Mauritania (FIPS 10-4 country code; ISO 3166 digram)
2470	MRAV	Multi-Role Armoured Vehicle
2471	MRBM	Medium Range Ballistic Missile
2472	MRC	Maintenance Requirements Card
2473	MRD	Motorized Rifle Division
2474	MRGW	Medium-Range Guided Weapon
2475	MRI	Magnetic Resonance Imaging
2476	MRL	Multiple Rocket Launcher
2477	MRPharmS	Member of the Royal Pharmaceutical Society (Great Britain)
2478	MRS	Magnetic Resonance Spectroscopy
2479	MRSA	Methicillin-resistant Staphylococcus aureus
2480	MRTFB	U.S. Major Range and Test Facility Base
2481	Ms	Megasecond
2482	mS	Millisiemens
2483	MSD	Minimum Safe Distance
2484	MSDB	Multi Source Data Base
2485	MSE	Multiple Subscriber Element
2486	MSG	Message
2487	MSLP	Mean Sea Level Pressure
2488	MSNBC	Microsoft National Broadcasting Company Cable news channel (see also msnbc.com)
2489	MSO	Multiple System Operator
2490	MSPB	Merit Systems Protection Board
2491	MSSA	Methicillin-susceptible Staphylococcus aureus
2492	Mt	Meitnerium
2493	mT	Millitesla
2494	MTBF	Mean Time Between Failures
2495	MtF	Male-to-female transsexual
2496	MTG	Magic: The Gathering
2497	MTQ	Martinique (ISO 3166 trigram)
2498	MTT	Methylthiazol tetrazolium (assay)
2499	MTTF	Mean Time To Failure
2500	MTTR	Mean Time To Recover
2501	MTWS	MAGTF Tactical Warfare System
2502	MUS	Mauritius (ISO 3166 trigram)
2503	mV	Millivolt
2504	MVC	Missouri Valley Conference
2505	MVFC	Missouri Valley Football Conference
2506	MVNO	Mobile virtual network operator
2507	mW	Milliwatt
2508	MWESH	Machismo Wizards Extended SHelter (operating system)
2509	MWI	Malawi (ISO 3166 trigram)
2510	MWOA	Mount Wilson Observatory Association
2511	MWTB	Mounted Warfare Test Bed
2512	MY	Malaysia (FIPS 10-4 country code; ISO 3166 digram)
2513	MYOB	Mind Your Own Business
2514	MYS	Malaysia (ISO 3166 trigram)
2515	MYT	Mayotte (ISO 3166 trigram)
2516	n	Nano
2517	N/A	Not Available, Not Applicable, or: No Answer
2518	N3F	National Fantasy Fan Federation
2519	nA	Nanoampere
2520	Na	Sodium (Latin Natrium)
2521	NAA	N-Acetylaspartate
2522	NAAD	North American Air Defense
2523	NAAQS	National Ambient Air Quality Standards
2524	NAAWS	NATO Anti-Air Warfare System
2525	NAC	National Agency Check,U.S. Naval Avionics Center,U.S. Navy Advanced Concepts,North Atlantic Council,Northern Area Command
2526	NACC	North Atlantic Cooperation Council
2527	NACISA	NATO Communications and Information Systems Agency
2528	NACMA	NATO Air Command and Control System Management Agency
2529	NACRA	North America Caribbean Rugby Association (more specifically rugby union)
2530	NAEC	U.S. Naval Air Engineering Center
2531	NAFERA	Native American Free Exercise of Religion Act
2532	NAFLD	NonAlcoholic Fatty Liver Disease
2533	NAFO	Northwest Atlantic Fisheries Organization
2534	NAFTA	North American Free Trade Agreement
2535	NAGPRA	Native American Graves Protection and Repatriation Act
2536	NAICS	North American Industry Classification System
2537	NAIL	Neurotics Anonymous
2538	NAILS	National Airspace Integrated Logistics System
2539	NAIRU	Non Accelerating Inflation Rate of Unemployment
2540	NAK	Negative Acknowledge
2541	NAM	Namibia (ISO 3166 trigram)
2542	NAMBLA	North American Man-Boy Love Association
2543	NAMRL	Naval Aerospace Medical Research Laboratory
2544	NaN	Not A Number (computing)
2545	NAO	UK National Audit Office
2546	NAPS	Navy Acquisition Procedures Supplement
2547	NARA	(U.S.) National Archives and Records Administration
2548	NARAL	National Abortion Rights Action League
2549	NARDAC	Naval Regional Data Automation Center
2550	NARDIC	U.S. Navy Acquisition Research and Development Information Center
2551	NARPV	National Association for Remotely Piloted Vehicles
2552	NASCAR	National Association for Stock Car Auto Racing
2553	NASDAQ	National Association of Securities Dealers Automated Quotations
2554	NASED	National Association of State Election Directors [1][2]
2555	NASH	Non-Alcoholic Steatohepatitis
2556	NASP	National Aerospace Plane
2557	NASS	National Association of Secretaries of State [3]
2558	NatGeo	National Geographic
2559	NaUKMA	National University of Kyiv-Mohyla Academy
2560	NAV	Navigation[al]
2561	NAVCAMS	Naval Communications Area Master Station
2562	NAVCC	National Audio-Visual Conservation Center
2563	NAVCENT	Naval Forces U.S. Central Command
2564	NAVDAC	Naval Data Automation Command
2565	NAVEUR	Naval Forces U.S. European Command
2566	NAVFOR	Naval Force
2567	NAVMACS	Naval Modular Automatic Communication Subsystem
2568	NAVNET	Navy Network
2569	NAVS	Non-Cooperative Airborne Vector Scoring
2570	NAVSAT	Navigation Satellite
2571	NAVSPACECOM	U.S. Navy Space Command
2572	NAVSPASUR	U.S. Naval Space Surveillance System
2573	NAVSTAR	Navigation Satellite Timing And Ranging
2574	NAVTACNET	Navy Tactical Network
2575	NAWC	U.S. Naval Air Warfare Center
2576	Nb	Niobium
2577	NBA	National Basketball Association
2578	NBL	National Basketball League (Australia)
2579	NBT	Nitroblue tetrazolium (assay)
2580	nC	Nanocoulomb
2581	NCA	National Command Authority
2582	NCAR	U.S. National Center for Atmospheric Research
2583	NCB	National Codification Bureau
2584	NCCAM	U.S. National Center for Complementary and Alternative Medicine
2585	NCCUSL	National Conference of Commissioners on Uniform State Laws (U.S.)
2586	NCDDR	U.S. National Center for the Dissemination of Disability Research
2587	NCI	U.S. National Cancer Institute
2588	NCL	New Caledonia (ISO 3166 trigram)
2589	NCLR	National Council of La Raza
2590	NCMO	No Commitment Make Out
2591	NCO	Non-Commissioned Officer
2592	NCP	Net Contracted Purchases
2593	NCR	National Cash Register Co.
2594	NCTR	Non-Co-operative Target Recognition
2595	NCW	Network Centric Warfare
2596	Nd	Neodymium
2597	NDAA	U.S. National Defense Authorization Act
2598	NDBP	Non-Departmental Public Body (Scotland)
2599	NDP	New Democratic Party (Canada)
2600	NDS	Nintendo DS
2601	Ne	Neon
2602	NECTEC	National Electronics and Computer Technology Center (Thailand)
2603	NEMS	National Energy Modeling System (USDOE-EIA)
2604	NEPA	National Environmental Policy Act
2605	NER	Niger (ISO 3166 trigram)
2606	NERICA	New Rice for Africa
2607	NESP	NSA/CSS Enterprise Standards Program
2608	NET	National Educational Television
2609	NETCU	(UK) National Extremism Tactical Co-ordination Unit
2610	NETL	(US) National Energy Technology Laboratory
2611	NETWARS	Network Warfare Simulation
2612	NEX	Navy EXchange
2613	nF	Nanofarad
2614	NF	Norfolk Island (ISO 3166 digram)
2615	NFER	National Foundation for Educational Research
2616	NFG	No Fucking Good
2617	NFHS	National Federation of State High School Associations
2618	NFI	Not F****** Interested
2619	NFK	Norfolk Island (ISO 3166 trigram)
2620	Nfld	Newfoundland
2621	NFPA	National Fluid Power Association (United States)
2622	NFT	No Further Text
2623	NGA	U.S. National Geospatial-Intelligence Agency, Nigeria (ISO 3166 trigram)
2624	NGATS	New Generation Army Targetry System
2625	NGH	Northern General Hospital
2626	NGO	non-governmental organization
2627	NGS	Naval Gunfire Support
2628	nH	Nanohenry
2629	NHANES	National Health and Nutrition Examination Survey
2630	NHB	New Hebrides (ISO 3166 trigram; obsolete 1980)
2631	NHB	No Holds Barred radio (Link)
2632	NHL	National Hockey League
2633	NHRA	National Hot Rod Association
2634	NHS	National Health Service (UK)
2635	Ni	Nickel
2636	NIAAA	U.S. National Institute on Alcohol Abuse and Alcoholism
2637	NIAG	NATO Industrial Advisory Group
2638	NIAID	National Institute of Allergies and Infectious Disease
2639	NIAMD	National Institute of Arthritis and Musculoskeletal Diseases
2640	NIB	New In Box (Internet auction/trading listings)
2641	NIBP	Non-invasive blood pressure monitor
2642	NicA	Nicotine Anonymous
2643	NICAP	National Investigations Committee on Aerial Phenomena
2644	NICE	UK. National Institute for Health and Clinical Excellence
2645	NICHD	National Institute of Child Health and Human Development [4]
2646	NICP	National Inventory Control Point
2647	NIDDK	National Institute of Diabetes and Digestive and Kidney Diseases
2648	NIDRR	National Institute on Disability Research and Rehabilitation
2649	NIEHS	National Institute of Environmental Health Sciences
2650	NIIN	National Item Identification Number
2651	NIMA	National Imagery and Mapping Agency (became NGA)
2652	NIMBY	Not In My Back Yard (See NOME)
2653	NIMG	Not In My Generation
2654	NIN	Nine Inch Nails (band)
2655	NIPR	National Institute of Polar Research (Japan)
2656	NIR	Northern Ireland (FIFA trigram; not eligible for an ISO 3166 or IOC trigram)
2657	NISAC	U.S. National Infrastructure Simulation and Analysis Center
2658	NISCAP	NSA Information System Certification and Accreditation Program
2659	NISER	National Institute of Science Education and Research
2660	NIST	National Institute of Standards and Technology
2661	NITFS	National Imagery Transmission Format Standard
2662	NIU	Niue (ISO 3166 trigram)
2663	nJ	Nanojoule
2664	NJ	New Jersey (postal symbol)
2665	NJHS	National Junior Honor Society
2666	NJPW	New Japan Pro Wrestling
2667	nK	Nanokelvin
2668	NKA	No Known Allergies
2669	nL	Nanolitre
2670	NLB	Non-Linear Battlefield
2671	NLD	Netherlands (ISO 3166 trigram)
2672	NLF	National Liberation Front (disambiguation)
2673	NLL	National Lacrosse League
2674	NLP	Natural Language Processing,Neuro-Linguistic Programming (pseudoscience)
2675	NLRB	National Labor Relations Board
2676	NLW	Non-Lethal Weapon
2677	nm	Nanometre
2678	NM	New Mexico (postal symbol)
2679	NMCI	Navy Marine Corps Intranet
2680	NMCS	Not Mission Capable Supply (SM&R code)
2681	NMD	U.S. National Missile Defense
2682	NMHNFG	Not Made Here,No Fucking Good
2683	NMN	No middle name
2684	NMR	Nuclear Magnetic Resonance
2685	NMSG	NATO Modelling and Simulation Group
2686	nN	Nanonewton
2687	NNE	North North-East
2688	NNSA	U.S. National Nuclear Security Administration
2689	NNW	North North-West
2690	NO	Nitric Oxide,Normally Open,Norway (ISO 3166 and FIPS 10-4 country code digram)
2691	No	Nobelium
2692	NOAA	U.S. National Oceanic and Atmospheric Administration
2693	NOAF	Norwegian Air Force
2694	NOAO	National Optical Astronomy Observatory
2695	NOC	UK. National Oceanography Centre
2696	NODEF	NATO Oceanographic Data Exchange Format
2697	NOGI	New Orleans Grande Isle (award for diving)
2698	NOLA	New Orleans,Louisiana (LA is the official postal code for Louisiana)
2699	NOLF	Navy OutLying Field
2700	NoMBO	Non-mine,Mine-like Bottom Object
2701	NOME	Not on Mars Either
2702	NOME	Not on Mars Either (see NIMBY)
2703	NOPA	National Office Products Alliance,National Office Products Association
2704	NOR	Norway (ISO 3166 trigram)
2705	NORELPREF	No religious preference
2706	NORTHAG	Northern Army Group
2707	NOS	Network Operating System,New Old Stock (Internet auction/trading listings),Nitric Oxide Synthase (enzyme)
2708	NOSA	NATO OSI Security Architecture
2709	NOTAFLOF	No One Turned Away For Lack Of Funds
2710	NOW	National Organization for Women
2711	NP	National Permit,A permit in India for trucks so they can go anywhere in the nation
2712	Np	Neap tide (nautical charts),Neptunium
2713	NP	Nepal (ISO 3166 and FIPS 10-4 country code digram)
2714	NPB	Nippon Professional Baseball
2715	NPC	National Postgraduate Committee,National Provincial Championship (New Zealand rugby competition,now defunct),Navigation Planning Chart
2716	NPCS	Non-Passenger Coaching stock (in Railways)
2717	NPD	Nationaldemokratische Partei Deutschlands (German)
2718	NPDI	New Product Development and Introduction
2719	NPG	Needline/Network Participation Group
2720	NPH	Normal Pressure Hydrocephalus
2721	NPL	National Priorities List,Nepal (ISO 3166 trigram)
2722	NPO	nothing by mouth
2723	NPOV	Neutral Point Of View
2724	NQ	Dronning Maud Land (ISO 3166 digram; obsolete 1983)
2725	NQOCD	Not Quite Our Class,Dear (or Darling). (Upper-class English slang)
2726	NR	Nauru (ISO 3166 and FIPS 10-4 country code digram)
2727	NRA	National Rifle Association
2728	NRAO	National Radio Astronomy Observatory
2729	NRC	(U.S.) National Research Council,Nuclear Regulatory Commission (U.S.)
2730	NRDC	(U.S.) Natural Resources Defense Council
2731	NREL	(U.S.) National Renewable Energy Laboratory
2732	NRK	Norsk Rikskringkasting (Norwegian Broadcasting Corporation)
2733	NRMP	National Resident Matching Program (U.S. medicine)
2734	NRO	(U.S.) National Reconnaissance Office
2735	NRT	Near Real Time
2736	NRTA	National Rat Terrier Association,National Retail Tenants Association,National Retired Teachers Association,Northwest Regional Transmission Association
2737	NRU	Nauru (ISO 3166 trigram)
2738	ns	Nanosecond
2739	nS	Nanosiemens
2740	NS	Norfolk Southern Railway (AAR reporting mark),Nova Scotia (postal symbol),Suriname (FIPS 10-4 country code)
2741	NSA	U.S. National Security Agency,Naval Support Activity,No Strings Attached
2742	NSABB	National Science Advisory Board for Biosecurity
2743	NSAID	Non-Steroidal Anti-Inflammatory Drug
2744	NSB	Norges Statsbaner (Norwegian State Railways)
2745	NSC	National Security Council
2746	NSDAP	Nationalsozialistische Deutsche Arbeiterpartei (German: 'German National Socialist Workers Party',the formal name of the Nazi Party)
2747	NSDL	National Science Digital Library (US)
2748	NSG	National System for Geospatial-Intelligence
2749	NSN	National Stock Number
2750	NSNA	National Student Nurses' Association
2751	NSO	National Standardization Office (ABCA)
2752	NSS	(U.S.) Naval Simulation System
2753	NST	(UK) Nimrod Software Team
2754	NSTAC	National Security Telecommunications Advisory Committee
2755	NSV	Nikitin-Sokolov-Volkov heavy machine gun (Russian НСВ Никитина-Соколова-Волкова) ru:ПулеметНСВ-12,7 'Утес'
2756	NSW	New South Wales (postal symbol)
2757	nT	Nanotesla
2758	NT	National Trust (UK),Saudi-Iraqi neutral zone (ISO 3166 digram; obsolete 1993),New Technology (Windows NT),Northern Territory (Australia) (postal symbol),Northwest Territories (Canada) (postal symbol)
2759	NTC	National Training Center,Negative Temperature Coefficient (thermistor)
2760	NTDS	Naval Tactical Data System
2761	NTP	Network Time Protocol
2762	NTR	Network Time Reference
2763	NTRA	National Thoroughbred Racing Association
2764	NTSB	National Transportation Safety Board
2765	NTSC	National Television Standards Committee (colloquially,Never Twice the Same Color)
2766	NTV	Non-Tactical Vehicle
2767	NTY	(Internet Abbreviations:) Not Tested Yet; (Alternatively) No Thank You
2768	NTZ	Iraq-Saudi Arabia Neutral Zone (ISO 3166 trigram; obsolete 1993)
2769	NU	Nicaragua (FIPS 10-4 country code),Niue (ISO 3166 digram),Nunavut (postal symbol)
2770	NUL	Null character (ASCII code of control character),National Urban League
2771	NUTS	Nuclear Utilization Target Selection
2772	NUWC	U.S. Naval Undersea Warfare Center
2773	nV	Nanovolt
2774	NVEOL	Night Vision and Electro-Optics Laboratory
2775	NVESD	CERDEC Night Vision and Electronic Sensors Directorate,Fort Belvoir,Virginia
2776	NVG	Night Vision Goggles
2777	NVL	Night Vision Laboratory
2778	nW	Nanowatt
2779	NW	North-West
2780	NW	Nuclear Weapon
2781	NWA	National Wrestling Alliance
2782	NWF	National Wildlife Federation
2783	NWFZ	Nuclear-Weapon-Free Zone
2784	NWHN	U.S. National Women's Health Network
2785	nWo	New World Order (see article for explanation of idiosyncratic capitalization)
2786	NWOAHM	New Wave of American Heavy Metal
2787	NWOBHM	New Wave of British Heavy Metal (sometimes pronounced /n.ˈwɒbm/ as if it were an acronym)
2788	NWRA	National Wildlife Rehabilitators Association
2789	NWSL	National Women's Soccer League (U.S.)
2790	NWT	North-West Territories
2791	NXA	21st arcade game in the Pump It Up series
2792	NXD	Native XML
2793	NXE	New Xbox Experience
2794	NXG	New Cross Gate station
2795	NXL	National XBall League
2796	NXN	Nike Cross Nationals
2797	NY	New York (postal symbol)
2798	NYC	New York City
2799	NYT	New York Times
2800	NYHA	New York Heart Association
2801	NYO	National Youth Orchestra of Great Britain
2802	NYSE	New York Stock Exchange
2803	NZ	New Zealand (ISO 3166 and FIPS 10-4 country code digram)
2804	NZC	New Zealand Cricket
2805	NZL	New Zealand (ISO 3166 trigram)
2806	NzL	Noze looan (online/event listings)
2807	NZOSS	New Zealand Open Source Society
2808	NZRU	New Zealand Rugby Union
2809	OAC	On Approved Credit
2810	OAP	Old Age Pensioner (UK)
2811	OARSI	Osteoarthritis Research Society International
2812	OAS	Organization of American States
2813	OASIS	Ontario Agencies Supporting Individuals with Special Needs
2814	OASIS	Ontario Association of Sewage Industry Services
2815	OASP	Operational Analysis Support Paper/Plan
2816	OAU	Organization for African Unity
2817	OBE	Officer of the Order of the British Empire
2818	OBX	Outer Banks (North Carolina)
2819	OC	Officer Commanding
2820	OCD	Obsessive-Compulsive Disorder
2821	OCFS	Oracle Cluster File System
2822	OCFS2	Oracle Cluster File System Release 2
2823	OCMCC	[2] Orchard County MCC
2824	OCN	Oncology Certified Nurse
2825	OCO	Oort Cloud Object
2826	OCR	Optical Character Recognition
2827	OCS	see entry
2828	ODAS	OCA-DLR Asteroid Survey
2829	ODBC	Open DataBase Connectivity
2830	OEA	(U.S.) Office of Economic Adjustment
2831	OECD	Organisation for Economic Co-operation and Development (international)
2832	OED	Oxford English Dictionary
2833	OEG	Operation Exposure Guidance
2834	OEIS	On-Line Encyclopedia of Integer Sequences
2835	OEM	Original Equipment Manufacturer
2836	OFA	Occipital Face Area
2837	OFDA	U.S Agency for International Development's Office of Foreign Disaster Assistance
2838	OGC	Open Geospatial Consortium
2839	OGD	Other Government Department
2840	OGO	Other Government Organization
2841	OH	Ohio (postal symbol)
2842	OHC	OverHead-Cam engine
2843	OHHLA	Original Hip-Hop Lyrics Archive
2844	OHIP	Ontario Health Insurance Plan
2845	OHMS	On Her (or His) Majesty's Service (also written: O.H.M.S.)
2846	OHP	Observatoire de Haute-Provence
2847	OHSS	Ovarian Hyperstimulation Syndrome
2848	OIC	Officer In Charge
2849	OIF	Operation Iraqi Freedom
2850	OIOC	Oriental & India Office Collections (in the British Library)
2851	OJT	On-the-Job Training
2852	OKC	Oklahoma City
2853	OLED	Organic Light-Emitting Diode
2854	OLS	Operational Linescan System
2855	OMD	Orchestral Manoeuvres in the Dark (1980s pop group)
2856	OME	Osaka Mercantile Exchange
2857	OMFG	Oh My Fucking God
2858	OMG	Oh My God or Or My Gosh
2859	OMGW	Oh My Gosh it's Windy
2860	OMN	Oman (ISO 3166 trigram)
2861	OMNCS	U.S. Office of the Manager for the National Communications System
2862	OMP	Order of Mapungubwe in Platinum
2863	OMS	Order of Mapungubwe in Silver
2864	OMT	Object Model Template
2865	ON	Ontario (postal symbol)
2866	ONC	Orthopaedic Nurse Certified
2867	ONG	Orthodontic National Group
2868	ONI	(U.S.) Office of Naval Intelligence
2869	ONS	Operational Needs Statement
2870	OOAD	Object Oriented Analysis and Design
2871	OOBE	Out-of-body experience
2872	OOCL	Orient Overseas Container Line
2873	OODA	Observation,Orientation,Decision,Action loop (a.k.a. Boyd's Loop)
2874	OOF	Out of Facility
2875	OOMF	One Of My Followers
2876	OOO	Out Of the Office
2877	OOTW	Operations Other Than War
2878	OP	Observation 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
2879	OPAC	Online Public Access Catalogue
2880	OPCON	Operational control
2881	OPCW	Organisation for the Prohibition of Chemical Weapons
2882	OPEC	Organization of the Petroleum Exporting Countries
2883	OPFOR	Opposing force
2884	OPINTEL	Operational Intelligence
2885	OPLAN	Operation plan (also OpPlan)
2886	OPORD	Operation order
2887	OPSEC	Operations security,Open Platform for Security
2888	OPSI	Overwhelming post splenectomy infection,UK Office of Public Sector Information
2889	OPTAR	Operational target
2890	OPV	Offshore Patrol Vessel
2891	OQ	Order 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)
2892	OR	Operating 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
2893	ORAU	Oak Ridge Associated Universities
2894	ORB	Object Request Broker
2895	ORBAT	Order of Battle
2896	ORD	Office of Research and Development,Operational Requirements Document
2897	ORF	Operational iness Float
2898	ORISE	Oak Ridge Institute for Science and Education
2899	ORNL	Oak Ridge National Laboratory
2900	ORR	Oak 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
2901	ORSA	Oxacillin-resistant Staphylococcus aureus,Operations Research Society of America
2902	OS	Operating System
2903	Os	Osmium
2904	OSA	Order of St. Augustine
2905	OSCE	Organisation for Security and Cooperation in Europe
2906	OSD	U.S. Office of the Secretary of Defense,On-screen Display
2907	OSDL	Open Source Development Labs
2908	OSE	Own Separate Entrance
2909	OSERS	U.S. Department of Education Office of Special Education and Rehabilitative Services
2910	OSETI	Optical SETI also Optical SETI
2911	OSHA	Occupational Safety and Health Administration
2912	OSI	Office of Strategic Influence,Ontario Swine Improvement,Open Source Initiative,Open Systems Interconnection
2913	OSIA	(U.S.) On-Site Inspection Agency
2914	OSIRIS	Optical,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)
2915	OSL	Open Source License, Optically Stimulated Luminescence, Orbiting Solar Laboratory
2916	OSM	One Saturday Morning
2917	OSOTPBOIAS	One Sec,On The Phone,Be Off In A Sec
2918	OSPA	Operations Security Professional's Association site of OSPA
2919	OSPA	Oregon School Psychologists Association [3]
2920	OSRH	Oružane Snage Republike Hrvatske (en: Armed forces of the Republic of Croatia)
2921	OSS	Office of Strategic Services (1942-1945, forerunner of CIA)
2922	OSU	Ohio State University,Oklahoma State University
2923	OTA	Office of Technology Assessment, Orthodontic Technicians Association
2924	OTAC	Orthodontic Technicians Association Conference,Orthodontic Technicians Association Council
2925	OTC	Over-The-Counter (drugs)
2926	OTD	Off the derech (referring to an Orthodox Jew who has stopped practicing the tenets of his or her faith)
2927	OTEA	(U.S. Army) Operational Test Evaluation Agency
2928	OTI	Office of Transition Initiatives (United States Agency for International Development)
2929	OTOH	On The Other Hand
2930	OTS	Off the scale,sexually untouchable except for a lot of money
2931	OTSBH	Over The Shoulder Boulder Holder
2932	OTW	On The Way
2933	OTYBL	Over To You Blue Leader
2934	OTYRL	Over To You Red Leader
2935	OU	University of Oklahoma
2936	OW	Old Wykehamist
2937	OWN	Oprah Winfrey Network
2938	OX	IATA code for Orient Thai Airlines
2939	OXC	Optical cross-connect
2940	OXM	Official Xbox Magazine
2941	OXT	Oxytocin
2942	OZ	(?) Australia
2943	p	pico
2944	P2P	Peer-to-peer (networking)
2945	pA	picoampere
2946	PAA	Position Area for Artillery
2947	PABX	Private Automated Branch eXchange (company phone system)
2948	PACOM	(U.S.) Pacific Command
2949	PADI	Professional Association of Diving Instructors
2950	PAEK	PolyArylEtherKetone
2951	PAFC	Plymouth Argyle Football Club
2952	PAH	Polycyclic aromatic hydrocarbon
2953	PAHO	Pan American Health Organization
2954	PAK	Pakistan (ISO 3166 trigram)
2955	PAM	Precision Attack Missile
2956	PANS	Pretty Advanced/Awesome Network Services (cf. POTS)
2957	PARC	Palo Alto Research Center
2958	PAROS	Prevention of an Arms Race in Outer Space (treaty)
2959	PARP	(NATO Partnership for Peace) Planning And Review Process
2960	PARWIG	Power Augmented Ram Wing In Ground (aeroplane wing shape)
2961	PAS	See entry
2962	PASR	Personnel Accounting and Strength Reporting
2963	PATH	Port Authority Trans-Hudson
2964	PAYD	Pay As You Drive
2965	PAYE	Pay As You Earn
2966	Pb	Lead (Latin Plumbum)
2967	PB	PolyButylene
2968	PBB	PolyBrominated Biphenyl
2969	PBCK	Problem Between Chair and Keyboard (computer help desk in-joke)
2970	PBD	PolyButaDiene
2971	PBDE	PolyBrominated Diphenyl Ether
2972	PBI	PolyBenzImidazole
2973	PBN	PolyButylene Naphthalate
2974	PBOH	Please Become Old History
2975	PBT	PolyButylene Terephthalate
2976	PBX	Private Branch eXchange (company phone system)
2977	pC	picocoulomb
2978	PCAS	Planet-Crossing Asteroid Survey
2979	PCB	see entry
2980	PCCB	Porsche Ceramic Composite Brake
2981	PCCIP	President's Commission on Critical Infrastructure Protection
2982	PCE	PerChlorEthylene
2983	PCIe	Peripheral Component Interconnect Express (computer bus)
2984	PCL	Passive Coherent Location
2985	PCMCIA	Personal Computer Memory Card International Association (People Can't Memorise Computer-Industry Acronyms)
2986	PCN	Pitcairn Islands (ISO 3166 trigram)
2987	PCPI	Physician Consortium for Performance Improvement (AMA)
2988	PCR	Polymerase chain reaction
2989	PCSSD	Pulaski County Special School District
2990	PCZ	Panama Canal Zone (ISO 3166 trigram; obsolete 1980)
2991	Pd	Palladium
2992	PD	Product Director—Example: CERDEC Product Director C4ISR and Network Modernization
2993	PDL	Pure Dumb Luck (Texan punk band)
2994	PDN	Pull-Down Network
2995	PDRY	People's Democratic Republic of Yemen (obsolete since 1990)
2996	PDT	Pacific Daylight [Saving] Time (UTC-7 hours)
2997	PE	Professional Engineer
2998	PEBCAC	Problem Exists Between Chair and Computer (IT help desk in-joke)
2999	PEBKAC	Problem Exists Between Keyboard and Chair (ditto)
3000	PEEK	PolyEtherEtherKetone
3001	PEET	Partnerships for Enhancing Expertise in Taxonomy
3002	PEK	PolyEtherKetone
3003	PEPFAR	President's Emergency Plan For AIDS Relief
3004	PER	Peru (ISO 3166 trigram)
3005	perl	usually lower case Practical Extraction and Report Language
3006	PES	PolyEtherSulfone
3007	PEST	UK Public Engagement with Science and Technology
3008	PETE	PolyEthyleneTErephthalate
3009	PETP	PolyEthyleneTerePhthalate
3010	pF	picofarad
3011	PFD	Permanent Fund Dividend = personal flotation device
3012	PFE	Permanent Forest Estate
3013	PfP	Partnership for Peace
3014	Pg	petagram
3015	pg	picogram
3016	PGCE	Postgraduate Certificate in Education
3017	PGD	Pre-implantation Genetic Diagnosis
3018	PGENI	Pharmaco-Genetics for Every Nation Initiative
3019	PGH	Pre-implantation Genetic Haplotyping
3020	PGM	Precision-Guided Munition
3021	PGP	Pretty Good Privacy
3022	PHL	Philippines (ISO 3166 trigram)
3023	PHQ	Patient Health Questionnaire
3024	Pi	Pebi
3025	PIB	PolyIsoButylene
3026	PIC	Person In Charge
3027	PICNIC	Problem In Chair Not In Computer
3028	PICS	Private Investment Capital Subscription
3029	PIF	Partners in Flight
3030	PIG	Pipeline Inspection Gauge
3031	PIN	Personal Identification Number
3032	PINF	People In Need Foundation (Czech charitable organisation)
3033	PIPA	Program on International Policy Attitudes
3034	PIR	Priority Intelligence Requirement
3035	PIRA	Provisional Irish Republican Army
3036	PIREPS	Pilot Reports
3037	PITA	Pain In The Ass
3038	PJ	petajoule
3039	pJ	picojoule
3040	PJHQ	Permanent Joint Headquarters
3041	PKE	Partnership of Kindermusik Educators [1] &[2] & [2]
3042	PKI	Public Key Infrastructure (cryptography)
3043	PKU	Phenylketonuria
3044	pL	picolitre
3045	PLAID	Precision Location and Identification
3046	PLB	Personal Locator Beacon
3047	PLC	Public Limited Company (British)
3048	PLCC	Plastic Leaded Chip Carrier (electronics)
3049	PLD	Probable Line of Deployment
3050	PLEBS	People Lacking Everyday Basic Skills
3051	PLF	Parachute Landing Fall
3052	PLIF	Planar Laser-Induced Fluorescence
3053	PLL	Phase-Locked Loop (electronics)
3054	PLM	Polarized Light Microscope/Microscopy
3055	PLMBA	Phospholipid Bilayer Microarray
3056	Pln	Platoon
3057	PLO	Palestine Liberation Organization
3058	PLOKTA	Press Lots Of Keys To Abort
3059	PLP	Platonic Life Partner
3060	PLUTO	Pipe Line Under The Ocean
3061	PLW	Palau (ISO 3166 trigram)
3062	pm	picometre
3063	PMC	Primary Motor Cortex
3064	PMI	Positive Material Identification
3065	PMID	PubMed Identifier
3066	PMMA	PolyMethylMethAcrylate
3067	PMS	Premenstrual Syndrome
3068	PMSL	Piss Myself Laughing (Internet shorthand)
3069	PMT	Premenstrual Tension (UK) (see Premenstrual Syndrome)
3070	pN	piconewton
3071	PNAC	Project for the New American Century
3072	PNVS	Pilot Night Vision Sensor
3073	Po	Polonium
3074	PO	Post Office
3075	PO	Purchase Order
3076	POCD	Post-Operative Cognitive Dysfunction
3077	pod	Plain Old Documentation
3078	POFF	Plain Old Flat File
3079	POGO	Project On Government Oversight
3080	POI	Program Of Instruction
3081	POK	Plane Of Knowledge
3082	POLAD	Political Advice
3083	POMDP	Partially observable Markov decision process
3084	PooS	Poo Sniffer (Internet shorthand)
3085	POS- Point Of Sale terminal (retail industry transaction computers)	Piece Of S**t
3086	POSH	Port Outbound Starboard Home (alleged)
3087	POSSLQ	Person of the Opposite Sex Sharing Living Quarters
3088	POT	Plane Of Tranquility
3089	POTS	Plain Old Telephone Service (cf. PANS),Postural Orthostatic Tachycardia Syndrome
3090	POTUS	President of the United States
3091	POV	Point of view
3092	POW	Prisoner of war
3093	PPASC	(U.S.) Plans and Program Analysis Support Center
3094	PPCLI	Princess Patricia's Canadian Light Infantry (regiment)
3095	PPLI	Precise Participant Location & Identification
3096	PPM	Project Planning and Management
3097	PPO	PolyPhenylene Oxide
3098	PPQN	Pulses Per Quarter Note (ditto)
3099	PPQT	Pre-Production Qualification Test
3100	PPV	Pay-per-view
3101	Pr	Pastor, Priest
3102	PR	Public Relations
3103	Prb	Presbyter
3104	PRBO	Point Reyes Bird Observatory
3105	PRC	People's Republic of China
3106	PRD	CERDEC Product Realization Directorate
3107	PRFG	Partial Fog (METAR Code)
3108	PRI	Puerto Rico (ISO 3166 trigram)
3109	PRK	Democratic People's Republic of Korea (ISO 3166 trigram)
3110	PRM	Personnel iness Management
3111	PRY	Paraguay (ISO 3166 trigram)
3112	Ps	petasecond
3113	pS	picosiemens
3114	PSG	Pacific Seabird Group
3115	PSI	Portable Source Initiative
3116	PSI	Pounds per square inch
3117	PSS	Personnel System Support
3118	PST	Pacific Standard Time (UTC-8 hours)
3119	PSU	Pennsylvania State University
3120	PsyOp	Psychological Operations
3121	pT	picotesla
3122	Pt	Platinum
3123	PTA	Parent-Teacher Association
3124	PTAL	Public Transport Accessibility Level
3125	PTES	People's Trust for Endangered Species
3126	PTFE	PolyTetraFluoroEthylene
3127	PTI	Pardon the Interruption
3128	PTSD	Post-Traumatic Stress Disorder
3129	Pu	Plutonium
3130	Pub	Publication
3131	PUG	PET Users Group
3132	PUN	Pull-Up Network
3133	PUP	Pull-Up Point
3134	PUS	United States Miscellaneous Pacific Islands (ISO 3166 trigram; obsolete 1986)
3135	PV	petavolt
3136	pV	picovolt
3137	PvE	Player versus Environment
3138	PvP	Player versus Player
3139	PVR	Personal Video Recorder
3140	PvZ	Plants vs. Zombies
3141	PW	Palau (postal symbol; ISO 3166 digram)
3142	pW	picowatt
3143	PWA	Pirates With Attitude
3144	PWBA	Pension and Welfare Benefits Administration
3145	PWC	PieceWise Constant (describing a mathematical function)
3146	PwC	PricewaterhouseCoopers (international accounting firm)
3147	PWL	PieceWise Linear (describing a mathematical function)
3148	PWLC	PieceWise Linear and Concave/Convex (describing a mathematical function)
3149	PWR	Pressurized Water Reactor
3150	PX	Post eXchange
3151	PYF	French Polynesia (ISO 3166 trigram)
3152	PYMWYMI	Put Your Money Where Your Mouth Is
3153	Q1	First quarter of the year
3154	Q2	Second quarter of the year
3155	Q3	Third quarter of the year
3156	Q4	Fourth quarter of the year
3157	QA	Qatar (FIPS 10-4 country code; ISO 3166 digram)
3158	Qantas	Queensland And Northern Territory Aerial Services
3159	QAT	Qatar (ISO 3166 trigram)
3160	QB	Quarterback (football)
3161	QCD	Quantum ChromoDynamics
3162	QD	quaque die (Latin for 'daily')
3163	QDR	Quadrennial Defense Review
3164	QEH	Queen Elizabeth's Hospital
3165	QK	Air Canada Jazz (IATA airline designator)
3166	QNH	Regional mean sea level atmospheric pressure (aeronautical Q code)
3167	QPS	Quark Publishing System
3168	QS	quantum sufficit (Latin, 'as much as suffices')
3169	QSCAT	Quick Scatterometer satellite
3170	QSL	Québec Sign Language
3171	QSO	Quasi-Stellar Object
3172	Quango	(British Commonwealth) QUasi Autonomous Non-Governmental Organisation
3173	Quasar	Quasi-stellar radio source
3174	QUB	Queen's University Belfast
3175	QUIET	Q and U Imaging ExperimenT (Q and U are the Stokes parameters of the CMBR polarization)
3176	qv	quod vide (Latin, 'which see')
3177	QZ	Awair (IATA airline designator)
3178	R2I	Resistance to Interrogation
3179	RA	Radio Australia
3180	Ra	Radium
3181	RAAF	Royal Australian Air Force
3182	Rabobank	Raiffeisen-Boerenleenbank (from the two banks that merged to form the modern company)
3183	RACK	Risk Aware Consensual Kink (SM phrase)
3184	Racon	RAdar beaCON
3185	RADA	Royal Academy of Dramatic Art
3186	Radar	Radio Detection And Ranging
3187	RadB	Rad51/Dmc1 homologous protein
3188	RADb	Routing Assets Data Base
3189	RADC	Region Air Defence Commander
3190	RAE	UK Royal Aircraft Establishment (-1991)
3191	RAGBRAI	Register's Annual Great Bicycle Ride Across Iowa
3192	RAM	Royal Air Maroc
3193	Ramark	RAdar MARKer
3194	RAOC	Rear Area Operation Centre
3195	RARDE	UK Royal Armament Research and Development Establishment (1962-1991)
3196	RARE	Rapid Acquisition with Relaxation Enhancement (MRI technique)
3197	RATELO	Radiotelephone Operator
3198	Rb	Rubidium
3199	RB	Running Back (football)
3200	RBI	Runs Batted In
3201	RC	see entry
3202	RCAF	Royal Canadian Air Force
3203	RCC	Rescue Co-ordination Centre
3204	RCCO	Royal Canadian College of Organists
3205	RCHA	Royal Canadian Horse Artillery (regiment)
3206	RCMP	Royal Canadian Mounted Police
3207	RD	Radio Disney
3208	RDD	Radiological Dispersion Device
3209	RDM	Remotely Delivered/Deliverable Mine
3210	RDT	Remote Digital Terminal
3211	RDV	Remote Detection Vehicle
3212	Re	Rhenium
3213	RE	Royal Engineers
3214	REACT	Remote Electronically Activated Control Technology
3215	REAM	Retired Educators Association of Minnesota
3216	RECCE	Reconnaissance
3217	REEF	Reef Environmental Education Foundation
3218	REM	Rapid Eye Movement (sleep phase),Rosicrucian Egyptian Museum
3219	REME	Royal Electrical and Mechanical Engineers
3220	RERC	Rehabilitation Engineering Research Center
3221	RESNA	Rehabilitation Engineering and Assistive Technology Society of North America
3222	REU	Réunion (ISO 3166 trigram)
3223	Rf	Rutherfordium
3224	RFD	Request for Documentation
3225	RFE	Request for Evaluation
3226	RFEF	Real Federación Española de Fútbol (Spanish for Royal Spanish Football Federation)
3227	RFF	Right of First Refusal (legal term)
3228	RFID	Radio Frequency IDentification
3229	RFL	Rugby Football League
3230	RFP	Request for Proposal
3231	RFQ	Request for Quotation
3232	RFT	Request for Tender
3233	RFU	Rugby Football Union
3234	RG	Republican Guard
3235	Rg	Roentgenium
3236	RGB	Red Green Blue (colour model)
3237	RGBI	Red Green Blue Intensity (ditto)
3238	Rh	Rhodium
3239	RH	Southern Rhodesia (ISO 3166 digram; obsolete 1980)
3240	RHIC	Relativistic Heavy Ion Collider
3241	RHLI	Royal Hamilton Light Infantry (Canadian militia regiment)
3242	RHO	Southern Rhodesia (ISO 3166 trigram; obsolete 1980)
3243	RHU	Replacement Holding Unit
3244	RI	Rhode Island (postal symbol)
3245	RIAA	Recording Industry Association of America
3246	RIBA	Royal Institute of British Architects
3247	RIFA	Red imported fire ant
3248	RILA	Retail Industry Leaders Association
3249	RIMVS	Retinal Imaging Machine Vision System
3250	RINO	Republican In Name Only[1]
3251	RIP	Relief In Place,requiesca[n]t in pace (Latin for 'may he/she/they rest in peace')
3252	RISC	Reduced Instruction Set Computer
3253	RJD	Reduced Julian Day
3254	RKBA	Right to Keep and Bear Arms (Second Amendment to the United States Constitution)
3255	RKO	Radio-Keith-Orpheum Pictures
3256	RLP	Recognised [Operating/Operational] Land Picture
3257	RLS	Restless Leg Syndrome
3258	RLY	Rally Point
3259	RM	see separate disambiguation page
3260	RMC	Robert Menzies College
3261	RMDA	Records Management and Declassification Agency
3262	RMP	Recognised [Operating/Operational] Maritime Picture
3263	RN	Radio Netherlands
3264	Rn	Radon
3265	RNA	RiboNucleic Acid
3266	RNAD	Royal Naval Armaments Depot (UK)
3267	RNPS	Radio Network Planning System
3268	RNZ	Radio New Zealand
3269	RNZI	Radio New Zealand International
3270	ROA	Rate Of Ascent
3271	ROE	Rules Of Engagement
3272	ROFLOL	Rolling On the Floor Laughing Out Loud
3273	ROH	Ring of Honor
3274	ROK	Republic of Korea
3275	ROP	Render Output Pipeline
3276	ROPE	Research Opportunity and Performance Evidence
3277	ROS	Reactive Oxygen Species
3278	ROU	Romania (ISO 3166 trigram)
3279	ROV	Remotely Operated Vehicle
3280	ROZ	Restricted Operations Zone
3281	RPA	Regional Plan Association
3282	RPD	Recognition-Primed Decision-making
3283	RPF	Rwandan Patriotic Front
3284	RPL	Reverse Polish Lisp
3285	rpm	revolutions per minute
3286	RPN	reverse Polish notation
3287	rps	revolutions per second
3288	RPV	Remotely Piloted Vehicle
3289	RQ	Puerto Rico (FIPS 10-4 territory code)
3290	RRB	Railroad Retirement Board
3291	RRN	Recurrence Rate Number
3292	RRP	Recurrent Respiratory Papillomatosis
3293	RRS	Racing Rules of Sailing
3294	RRSP	Registered Retirement Savings Plan (Canada; roughly equivalent to the IRA in the U.S.)
3295	RS	Russia (FIPS 10-4 country code)
3296	RSI	Repetitive Strain Injury
3297	RSJ	Rolled Steel Joist (construction)
3298	RSN	Real Soon Now (coined by author Jerry Pournelle)
3299	RSPB	(UK) Royal Society for the Protection of Birds
3300	RSPCA	Royal Society for the Prevention of Cruelty to Animals
3301	RSR	Required Supply Rate
3302	RSRE	UK Royal Signals and Radar Establishment (1976-1991)
3303	RSRI	Red Sands Research Institute
3304	RTA	Road traffic accident (British)
3305	RTBF	Radio-Télévision belge de la Communauté française
3306	RTF	Rich Text Format
3307	RTFM	the Fucking/Fine Manual
3308	RTG	Radio-isotope Thermoelectric Generator also used for Rubber Tyred Gantry crane
3309	RTI	Run-Time Infrastructure (Simulation)
3310	RTL	see entry
3311	RTP	Real-time Transport Protocol
3312	RTS	see entry
3313	RTT	Round Trip Timing
3314	RU	Russia (ISO 3166 digram)
3315	Ru	Ruthenium
3316	RUC	Royal Ulster Constabulary
3317	RUS	Russia (ISO 3166 trigram)
3318	RUSI	Royal United Services Institute for Defence Studies
3319	RW	Rwanda (ISO 3166 and FIPS 10-4 country code digram)
3320	RWA	Rwanda (ISO 3166 trigram)
3321	RWH	Rain Water Harvesting
3322	RWR	Radar Warning Receiver
3323	RWS	Remote Weapon Station
3324	Rx	Medical prescription (possibly from Latin 'recipere','to take': see entry)
3325	RX	Receive
3326	SARS	Severe Acute Respiratory Syndrome
3327	SBNO	Standing but not operating (in reference to amusement parks)
3328	SCOTUS	Supreme Court of the United States
3329	SCROTUS	So-called Ruler of the United States
3330	SDHC	Secure Digital High Capacity
3331	SDXC	Secure Digital eXtended Capacity
3332	SG	Senegal (FIPS 10-4 country code), Singapore (ISO 3166 digram), Snow Grains (METAR Code), Study Group
3333	SGOTUS	Second Gentleman of the United States
3334	SHO	Showtime (see also sho.com)
3335	SIRI	Service Interface for Real Time Information
3336	Siri	Speech Interpretation and Recognition Interface (Apple iOS software)
3337	SLOTUS	Second Lady of the United States (the vice president's wife)
3338	SoCon	Southern Conference (U.S. college sports)
3339	SSC	Safe,Sane,Consensual (SM phrase),Secondary Somatosensory Cortex,Smaller-Scale Contingency,U.S. Army Soldiers System Center (Natick,Massachusetts),Superconducting Super Collider,SSCCATAGAPP — Singles,Seniors,Childless Couples,And Teens And Gays Against Parasitic Parents (fictional organization from The Simpsons)
3340	SSD	South Sudan (ISO 3166 trigram)
3341	SSDC	U.S. Space and Strategic Defense Command
3342	STB	Surface Transportation Board[2]
3343	SWAC	Southwestern Athletic Conference
3344	SWAN	System for Wearable Audio Navigation
3345	SWAT	Special Weapons And Tactics
3346	SWF	Single White Female
3347	Ta	Tantalum
3348	TAACOM	U.S. Theater Army Area Command
3349	TAADCOORD	Theatre Army Air Defence Co-ordinator
3350	TAAR	Trace Amine-Associated Receptor
3351	TAC	U.S. Tactical Air Command (1946-1992)
3352	TACAN	Tactical Air Navigation
3353	TACCO	Tactical Coordinator
3354	TACCSF	U.S. Theater Aerospace Command & Control Simulation Facility
3355	TACDAR	Tactical Detection And Reporting
3356	TACSOP	Tactical SOP (Standing Operating Procedure)
3357	TADIL	Tactical Digital Information Link
3358	TAI	Target[ed] Area of Interest
3359	TAJ	Tom and Jerry
3360	TAJT	Tom and Jerry Tales
3361	TALES	Technical Advice and Lexicon for Enabling Simulation
3362	TANJ	There Ain't No Justice (used as expletive in the Ringworld novels)
3363	TANP	Terrain-Aware Network Planner
3364	TANSTAAFL	There Ain't No Such Thing As A Free Lunch (coined by author Robert A. Heinlein in his The Moon Is a Harsh Mistress)
3365	TAPPS	Texas Association of Private and Parochial Schools
3366	TARDIS	Time And Relative Dimension In Space (from Doctor Who)
3367	TAS	Tasmania (postal symbol)
3368	TASER	Thomas A. Swift's Electric Rifle
3369	TASM	Tactical Air-to-Surface Missile
3370	TAT	Tourism Authority of Thailand
3371	TATP	TriAcetone TriPeroxide
3372	TATT	Tired All The Time (medical diagnosis in-joke)
3373	Tb	Terbium
3374	TB	Tuberculosis
3375	TBA	to be announced
3376	TBBPA	TetraBromoBisPhenol-A
3377	TBD	to be done, or: to be documented, or: to be determined, or: to be decided
3378	TBF	to be fair
3379	TBH	To Be Honest
3380	TBL	Turkish Basketball League
3381	TBS	Turner Broadcasting System
3382	TBT	Tributyltin
3383	Tc	Technetium
3384	TCAA	Top Counter-Assault Agents
3385	TCAS	Traffic Collision Avoidance System
3386	TCCCS	Tactical Command,Control and Communication System
3387	TCD	Chad (ISO 3166 trigram)
3388	TCHD	Truck Cargo Heavy Duty
3389	TCL	Tool Command Language
3390	TCM	Turner Classic Movies
3391	TCU	Texas Christian University
3392	TCW	Tasty Coma Wife
3393	TCWMS	Tele-Center Workforce Management System
3394	TDA	The Disney Afternoon
3395	TDL	Tactical Data Link
3396	TDM	Time-Division Multiplexing
3397	TDMA	Time Division Multiple Access
3398	TDP	Technology Demonstration Programme
3399	TDRS	Tracking Data and Relay Satellite
3400	Te	Tellurium
3401	TEAL	Tasman Empire Airways Limited
3402	Team	Together everyone achieves more
3403	TEAMS	The East African Marine System (fiber optic cable)
3404	TED	Technology Entertainment Design prize
3405	TENCAP	Tactical Exploitation of National Capabilities
3406	TERS	Tactical Event Reporting System
3407	TES	Tactical Event System
3408	TEST	Thesaurus of Engineering and Scientific Terms
3409	TEU	Twenty-foot equivalent unit (cargo capacity)
3410	TeVeS	Tensor Vector Scalar theory
3411	TFMPP	Trifluorophenylmethylpiperazine
3412	TFR	Total Fertility Rate
3413	TFT	Thin-Film Transistor
3414	Tg	Teragram
3415	TG	Togo (ISO 3166 digram)
3416	TGO	Togo (ISO 3166 trigram)
3417	Th	Thorium
3418	THA	Thailand (ISO 3166 trigram)
3419	THAAD	Terminal High Altitude Area Defence
3420	THEGENTRY	The High-End Group of Earth's New Technologies Research Yield
3421	THEL	Tactical High Energy Laser ACTD
3422	THG	Tetrahydrogestrinone
3423	TIA	Total Information Awareness initiative
3424	TIA	Transient Ischemic Attack
3425	TIALD	Thermal Imaging and Airborne Laser Designation
3426	TIBS	Tactical Information Broadcast System
3427	TIC	Troops In Contact
3428	TIGERS	Topologically Integrated Geographic Encoding and Referencing System
3429	TINC	There Is No Cabal
3430	TIP	Thermal Identification Panel
3431	tits	Toes in the Sand
3432	TJD	Truncated Julian Day
3433	TJK	Tajikistan (ISO 3166 trigram)
3434	TKL	Tokelau (ISO 3166 trigram)
3435	TKM	Turkmenistan (ISO 3166 trigram)
3436	Tl	Thallium
3437	TLA	Three-Letter Abbreviation/Acronym
3438	TLAM	Tomahawk Land Attack Missile
3439	TLATOJL	The Life and Times of Juniper Lee
3440	TLPM	T1 Line Performance Monitor
3441	Tm	Terametre
3442	TMAP	Texas Medication Algorithm Project
3443	TMC	The Movie Channel
3444	TMD	Theatre Missile Defence
3445	TMDK	The Mighty Don't Kneel (Australian professional wrestling stable also active in Japan)
3446	TMI	Too Much Information
3447	TMJ	TemporoMandibular Joint (syndrome)
3448	TMNT	Teenage Mutant Ninja Turtles
3449	TMPG	Transparent Multi-Platform Gateway
3450	TMR	Twin Main Rotors (helicopter type)
3451	TMS	Transcranial Magnetic Stimulation
3452	TMT	Thirty Meter Telescope
3453	TMTOWTDI	There's Than One Way To Do It (from Perl)
3454	TNA	Total Nonstop Action Wrestling
3455	TNO	Trans-Neptunian Object
3456	TOBS	Time of OBServation
3457	TOC	Table Of Contents, Tactical Operations Centre, Temporo-Occipital transition Cortex, Top of Concrete
3458	TOG	Togo (IOC and FIFA trigram,but not ISO 3166)
3459	TOGS	Thermal Observation Gunnery Sight
3460	TOMS	Total Ozone Mapping Spectrometer (satellite instrument)
3461	TON	Tonga (ISO 3166 trigram)
3462	TOS	Tape 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
3463	TOT	Time On Target
3464	TOW	Tube-launched,Optically tracked,Wire-guided (anti-tank missile)
3465	TP	East Timor (ISO 3166 digram; obsolete 2002),São Tomé and Príncipe (FIPS 10-4 country code),Training Practice,Trident Ploughshares
3466	TPE	Chinese Taipei (IOC and FIFA trigram for the country also known as Taiwan)
3467	TPI	The point is
3468	TPO	Thrombopoietin
3469	TPS	The Pennington School
3470	TPTB	The Powers That Be (often used to refer to the people responsible for the content of TV series or movies)
3471	TQ	Top Qualifier (similar to Pole Position in car racing)
3472	TRA	Technology iness Assessment
3473	TRAC	(U.S. Army) TRADOC Analysis Center
3474	TRACON	Terminal Radar Approach Control
3475	TRADOC	(U.S. Army) Training and Doctrine Command
3476	TRANSCOM	U.S. Transportation Command
3477	TRAP	Tactical Receive equipment and related Applications
3478	TRASANA	TRADOC Systems Analysis Agency
3479	TRD	Towed Radar Decoy
3480	TRIGAT	Third Generation Antitank (missile)
3481	TRL	Technology readiness level
3482	Trp	Troop
3483	TRU	Transuranic
3484	TRUEX	Training in Urban Environment Exercise
3485	TRW	Thompson Ramo Wooldridge Inc.
3486	Ts	Terasecond
3487	TS	Terasiemens,Thunderstorm (METAR code),Tunisia (FIPS 10-4 country code),TinySex,Transsexual, Tough Sh*t
3488	TSA	Theatre Storage Area,Time Slot Allocation,Transportation Security Administration,The Salvation Army
3489	TSEC	Transmission Security Encryption Code
3490	TSL	Transportation Security Laboratory
3491	TSN	The Sporting News (historic name of the periodical now known as Sporting News),The Sports Network
3492	TSO	The Stationery Office (was HMSO until 1996),(U.S.) TRICARE Support Office,Trans-Siberian Orchestra (band)
3493	TSOP	Tactical Standing Operation Procedure,The Sound of Philadelphia (classic 1970s R&B instrumental)
3494	TSR	Terminate and Stay Resident
3495	TSSIA	The Subject Says It All
3496	TT	Teratesla,Terrestrial Time,Tourist Trophy (Motorcycle sport),Trinidad and Tobago (ISO 3166 digram)
3497	TTCT	Torrance Tests of Creative Thinking
3498	TTFN	Ta Ta For Now
3499	TTL	Tax,Title,License,Through-the-lens (photography),Time 'till live,Time to live,Transistor-transistor logic
3500	TTO	Trinidad and Tobago (ISO 3166 trigram)
3501	TTP	Tactics,Techniques,and Procedures,Thrombotic thrombocytopenic purpura,Trailer Transfer Point
3502	TTTEAF	Thomas the Tank Engine and Friends
3503	TTY	TeleTYpewriter (Printer)
3504	TTYL	To You Later (Internet slang)
3505	TTZ	Tetrazolium
3506	TU	Technische Universität (German for 'Technical University'),Thammasat University (Thailand),Turkey (FIPS 10-4 country code)
3507	TUC	Trades Union Congress
3508	TUG	TeX Users Group
3509	TUI	Text-based user interface (cf. CLI),among other uses
3510	TUM	Technische Universität München (Germany)
3511	TUN	Tunisia (ISO 3166 trigram)
3512	TUNS	Technical University of Nova Scotia
3513	TUR	Turkey (ISO 3166 trigram)
3514	TUSK	Tank Urban Survival Kit
3515	TUV	Tuvalu (ISO 3166 trigram)
3516	TV	Television,Teravolt,Transvestite,Tuvalu (ISO 3166 and FIPS 10-4 country code digram)
3517	Tv	Time value,a designation seen on some camera dials for shutter priority mode
3518	TVA	Tennessee Valley Authority
3519	TVG	Television Games (Network),Tick,Very Good,Often used by School Teachers when marking homework etc. (Tick VG)[1][2]
3520	TVR	TreVor (Wilkinson) Racing
3521	TVS	Tornado vortex signature
3522	TW	Republic of China (Taiwan) (ISO 3166 and FIPS 10-4 country code digram),Terawatt
3523	TWAIN	Technology Without An Interesting Name
3524	TWE	Trans World Entertainment
3525	TWI	The Welding Institute
3526	TWIP	Take 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
3527	TWN	Republic of China (Taiwan) (ISO 3166 trigram)
3528	TWP	Technical Working Paper
3529	TWS	Thermal Weapon Sight,Track While Scan
3530	TX	Texas (postal symbol),Transmit,Turkmenistan (FIPS 10-4 country code)
3531	TXV	Thermostatic Expansion Valve
3532	TYT	Take Your Time,Internet chat abbreviation
3533	TZ	Tanzania (ISO 3166 and FIPS 10-4 country code digram)
3534	TZA	Tanzania (ISO 3166 trigram)
3535	TZC	Tetrazolium chloride
3536	U	Uranium
3537	UA	Unit of Action
3538	UAAP	University Athletic Association of the Philippines
3539	UAB	University of Alabama at Birmingham
3540	UAP	Unidentified Areal Phenomana
3541	UAV	Unmanned Aerial Vehicle,Unprotected Anal and Vaginal sex,UB[edit]
3542	UBC	United Baptist Church,University of British Columbia
3543	UBI	Universal Basic Income
3544	UBIGEO	Ubicación Geografica (Spanish for Geographical Location)
3545	UBS	Unbundled Bitstream Services,United Bank of Switzerland,United Banque Suisse
3546	UCBSA	United Cricket Board of South Africa
3547	UCF	University of Central Florida
3548	UCLA	University of California at Los Angeles
3549	UCLES	University of Cambridge Local Examinations Syndicate
3550	UCR	University of California at Riverside
3551	UCR	University of Costa Rica
3552	UCS	Union of Concerned Scientists
3553	UCSB	University of California at Santa Barbara
3554	UCSD	University of California at San Diego
3555	UDAS	Uppsala-DLR Asteroid Survey
3556	UDDI	Universal Description,Discovery and Integration
3557	UDTS	Uppsala-DLR Trojan Survey
3558	UE	Unit of Employment
3559	UEFA	Union of European Football Associations
3560	UESAC	Uppsala-ESO Survey of Asteroids and Comets
3561	UFC	Ultimate Fighting Championship
3562	UFO	Unidentified Flying Object, or: United Farmers of Ontario
3563	UGV	Unmanned Ground Vehicle
3564	UHF	Ultra High Frequency
3565	UHMW	Ultra-High Molecular Weight
3566	UHRB	Ultra-High Resolution Building (simulation)
3567	UIC	University of Illinois at Chicago
3568	UID	User ID
3569	UIUC	University of Illinois at Urbana-Champaign
3570	UJTL	Universal Joint Task List
3571	UKIP	United Kingdom Independence Party
3572	UKR	Ukraine (ISO 3166 trigram)
3573	UL	Underwriters Laboratories
3574	ULF	Ultra Low Frequency
3575	UM	U.S. Minor Outlying Islands (postal symbol; ISO 3166 digram)
3576	UMCP	Unit Maintenance Collection Point
3577	UMES	University of Maryland Eastern Shore
3578	UMI	U.S. Minor Outlying Islands (ISO 3166 trigram)
3579	UMIST	University of Manchester Institute of Science and Technology
3580	UMTS	Universal Mobile Telecommunications System
3581	UN	United Nations
3582	UNABOM	University and airline bomber (FBI case name)
3583	UNAIDS	Joint United Nations Programme on HIV/AIDS
3584	UNAMSIL	United Nations Mission in Sierra Leone
3585	UNCF	United Negro College Fund
3586	UNCLOS	United Nations Convention on the Law of the Sea
3587	UNCSGN	United Nations Conference on the Standardization of Geographical Names
3588	UNCTAD	United Nations Conference on Trade and Development
3589	UNDCP	United Nations Drug Control Programme
3590	UNDE	Union of National Defence Employees (Canada)
3591	UNDP	United Nations Development Programme
3592	UNEP	United Nations Environment Programme
3593	UNFCCC	United Nations Framework Convention on Climate Change
3594	UNFICYP	United Nations Peacekeeping Force in Cyprus
3595	UNGEGN	United Nations Group of Experts on Geographical Names
3596	UNHCR	United Nations High Commission (er) for Refugees
3597	UNICEF	United Nations Children's Fund (originally the United Nations International Children's Emergency Fund)
3598	UNICRI	United Nations Interregional Crime and Justice Research Institute
3599	UNIDO	United Nations Industrial Development Organization
3600	UNIFEM	United Nations Development Fund for Women (from the French Fonds de développement des Nations unies pour la femme)
3601	UNLV	University of Nevada,Las Vegas
3602	UNMIK	United Nations Interim Administration Mission in Kosovo
3603	UNOSOM	United Nations Operations in Somalia
3604	UNPROFOR	United Nations Protection Force (in former Yugoslavia)
3605	UNRISD	United Nations Research Institute for Social Development
3606	UNSM	Union of Nova Scotian Municipalities
3607	UNTAC	United Nations Transitional Authority in Cambodia
3608	UNTAET	United Nations Transitional Administration in East Timor
3609	UNU	United Nations University
3610	UPdM	Università Popolare della Multimedialità
3611	UPF	Universitat Pompeu Fabra (Catalan for: 'Pompeu Fabra University')
3612	UPI	United Press International
3613	UPN	United Paramount Network
3614	UPU	Universal Postal Union
3615	UR	Soviet Union (NATO country code,obsolete 1992)
3616	URBSFA	Union royale belge des sociétés de football association (French for Royal Belgian Football Association)
3617	URD	User Requirements Document
3618	URI	University of Rhode Island
3619	URU	Uruguay (IOC and FIFA trigram, but not ISO 3166)
3620	URY	Uruguay (ISO 3166 trigram)
3621	US	United States (also ISO 3166 and FIPS 10-4 country code digram)
3622	USA	United States of America (also ISO 3166 trigram), United States Army
3623	USAADAC	U.S. Army Air Defense Artillery Center,Fort Bliss,Texas
3624	USAARMC	U.S. Army ARMor Center,Fort Knox,Kentucky
3625	USAAVNC	U.S. Army AViatioN Center,Fort Rucker,Alabama
3626	USAFSPC	U.S. Air Force Space Command
3627	USAIC	U.S. Army Infantry Center,U.S. Army Intelligence Center
3628	USAID	United States Agency for International Development
3629	USAP	Union Sportive des Arlequins Perpignanais,United States Antarctic Program
3630	USAPATRIOT	Uniting and Strengthening America by Providing Appropriate Tools Required to Intercept and Obstruct Terrorism
3631	USAREUR	United States Army Europe
3632	USB	Universal Serial Bus
3633	USC	United States Code,University of South Carolina,University of Southern California
3634	USCG	United States Coast Guard
3635	USCINCSPACE	United States Commander in Chief,Space Command
3636	USDA	United States Department of Agriculture
3637	USDI	United States Department of the Interior
3638	USDOE	United States Department of Energy
3639	USDRE	(U.S.) Under-Secretary of Defense for Research and Engineering (1978-1986)
3640	USEC	United States Enrichment Corporation
3641	USFL	United States Football League
3642	USFWS	United States Fish and Wildlife Service
3643	USGS	United States Geological Survey
3644	USIA	United States Information Agency
3645	USJFCOM	United States Joint Forces Command
3646	USL	United Soccer League,a third-level U.S. league. Not to be confused with an earlier league of the same name.,United Soccer Leagues,the organization that operates the above league,plus several other lower-level leagues,University of Southwestern Louisiana,a former name for the school now known as the University of Louisiana at Lafayette
3647	USMC	United States Marine Corps
3648	USMNT	United States men's national (soccer) team
3649	USN	United States Navy
3650	USNA	United States National Arboretum,United States Naval Academy
3651	USNB	United States Naval Base
3652	USNG	United States National Grid
3653	USNH	United States Naval Hospital
3654	USNI	United States Naval Institute
3655	USNO	U.S. Naval Observatory
3656	USNOFS	United States Naval Observatory Flagstaff Station
3657	USNP	United States Newspaper Program
3658	USNR	United States Navy Reserve
3659	USNS	United States Naval Ship
3660	USNY	University of the State of New York (usually pronounced 'use-knee')
3661	USNZ	University Sport New Zealand
3662	USPS	United States Postal Service
3663	USPTO	United States Patent and Trademark Office
3664	USR	User
3665	USS	United States ship (sometimes meaningless; see Star Trek)
3666	USSPACECOM	United States Space Command
3667	USSR	Union of Soviet Socialist Republics
3668	UST	Underground Storage Tank
3669	USTRANSCOM	United States Transportation Command
3670	USWNT	United States women's national (soccer) team
3671	UT	Universal Time
3672	UTEP	University of Texas at El Paso (pronounced you-tep)
3673	UTM	Universal Transverse Mercator (geographical co-ordinate system)
3674	UUA	Unitarian Universalist Association
3675	UUID	Universally Unique Identifier (see also GUID)
3676	UUV	Unmanned Underwater Vehicle
3677	UW	University of Washington
3678	UWO	University of Western Ontario
3679	UWT	Under Water Telephone
3680	UWTG	Under Water Tug
3681	UWW	United World Wrestling
3682	UXO	Unexploded Ordnance
3683	UY	Uruguay (ISO 3166 and FIPS 10-4 country code digram)
3684	UZ	Uzbekistan (ISO 3166 and FIPS 10-4 country code digram)
3685	UZB	Uzbekistan (ISO 3166 trigram)
3686	VACIS	Vehicle And Container Inspection System
3687	VACIS	Victorian Ambulance Clinical Information System
3688	VANOS	Variable Nockenwelle System
3689	VAO	Vienna Art Orchestra
3690	VAT	Vatican City-State (ISO 3166 trigram)
3691	VBA	Visual Basic for Applications
3692	vCJD	Variant Creutzfeldt-Jakob Disease
3693	VCNO	(U.S.) Vice Chief of Naval Operations
3694	VCofS	Vice Chief of Staff
3695	VCR	Video cassette recorder
3696	VCT	Saint Vincent and the Grenadines (ISO 3166 trigram)
3697	VDFS	VisualSVN Distributed File System (VDFS)
3698	VE	Venezuela (FIPS 10-4 country code; ISO 3166 digram)
3699	VEEGA	Venus Earth Earth Gravity Assist manœuvre
3700	VEN	Venezuela (ISO 3166 trigram)
3701	VERITAS	Very Energetic Radiation Imaging Telescope Array System
3702	VfD	s for deletion (used in Wikipedia)
3703	VFM	Value For Money
3704	VFMO	Very Fast Moving Object (astronomy)
3705	VFT	Virtual Function Table
3706	VFW	Veterans of Foreign Wars
3707	VG	British Virgin Islands (ISO 3166 digram)
3708	VGB	British Virgin Islands (ISO 3166 trigram)
3709	VH1	Video Hits One
3710	VHF	Very High Frequency
3711	VIA	Versatile Interface Adapter
3712	VIDS	Visual Information Display System
3713	VII	7 (in Roman numerals)
3714	VIII	8 (in Roman numerals)
3715	VIN	Vehicle Identification Number (ISO 3779)
3716	VIP	Very Important Person
3717	VISCII	VIetnamese Standard Code for Information Interchange
3718	VIT	Vellore Institute of Technology
3719	VIVO	Video In Video Out
3720	VJ	Video Jockey
3721	VLAD	Vertical Line Array DIFAR
3722	VLBA	Very Long Baseline Array
3723	VLF	Very Low Frequency
3724	VLIW	Very Long Instruction Word
3725	VLPFC	VentroLateral PreFrontal Cortex
3726	VLPMC	VentroLateral PreMotor Cortex
3727	VLSI	Very-large-scale integration
3728	VM	Vietnam (FIPS 10-4 country code)
3729	VMF	Marine Fighting Squadron of the United States Marine Corps
3730	VMF	Variable Message Format
3731	VMN	VentroMedial Nucleus (neurophysiology)
3732	VN	Vietnam (ISO 3166 digram)
3733	VNIR	Visible and Near InfraRed
3734	VNM	Vietnam (ISO 3166 trigram)
3735	VNS	see entry
3736	VOA	Voice of America
3737	VOIP	Voice Over Internet Protocol
3738	VOLT	Visual OpenType Layout Tool
3739	VON	Victorian Order of Nurses
3740	VOR	Voice of Russia
3741	VOX	Voice Operated oscillator
3742	VPOTUS	Vice President of the United States
3743	VR	Virtual Reality
3744	VRSG	Virtual Reality Scene Generator
3745	VSAT	Very Small Aperture Terminal ('vee-satt')
3746	VSHORAD	Very Short Range Air Defence
3747	VSO	Voluntary Services Overseas
3748	VSR	Very Special Relativity
3749	VTC	Video Tele-Conference
3750	VTEC	Variable valve Timing and Electronic lift Control
3751	VU	Vanuatu (ISO 3166 digram), Vedanta University
3752	VUB	Vrije Universiteit Brussel (Belgian university)
3753	VUT	Vanuatu (ISO 3166 trigram)
3754	VV	Via Voice,Village Voice
3755	VVAF	Vietnam Veterans of America Foundation
3756	VW	Volkswagen
3757	VZ	Verizon Communications (NYSE code)
3758	W	Tungsten (from German Wolfram),Watt,West
3759	W3C	World Wide Web Consortium
3760	WA	Namibia (FIPS 10-4 country code; from West Africa),Washington state (postal symbol),Western Australia (postal symbol),World Archery (Federation)
3761	WAAC	Women's Army Auxiliary Corps (Britain) (World War I UK)
3762	WAAF	Women's Auxiliary Air Force (World War II UK)
3763	WAC	Western Athletic Conference,Women's Auxiliary Corps (World War II Canada),Women's Army Corps (World War II U.S.)
3764	WACC	Weighted Average Cost of Capital (accounting)
3765	WACS	What-A-Cartoon! Show
3766	WAD	Weapons Alert Designator
3767	WAGGGS	World Association of Girl Guides and Girl Scouts
3768	WAGs	Wives And Girlfriends (most notably of England national football team players at the 2006 FIFA World Cup,although the term existed earlier)
3769	WAL	see entry
3770	WAPIMA	What a pain in my ass
3771	WAR	With All Respect
3772	WAsP	Short form of WAAAAP (Wind Atlas Analysis and Application Program)
3773	WAYP	White And Yellow Pages
3774	WB	Warner Bros.,Welcome Back (Internet shorthand)
3775	Wb	Weber
3776	WBA	Warner Bros. Animation,West Bromwich Albion (F.C.),World Boxing Association
3777	WBC	World Boxing Council
3778	WBE	Work Breakdown Element
3779	WBO	World Boxing Organization
3780	WC	Water Closet,Winston Churchill,World Cup (sports)
3781	WCBO	World Chess Boxing Organisation
3782	WCBP	World Center for Birds of Prey
3783	WCL	World Confederation of Labour
3784	WCS	Weapon Control Status,Wildlife Conservation Society
3785	WCW	World Championship Wrestling
3786	WDC	Western Design Center,World Data Center
3787	WDIN	Wildlife Disease Information Node
3788	WDWR	Walt Disney World Resort
3789	WEBS	Weapon Effectiveness Battle Simulation
3790	WEC	World Extreme Cagefighting
3791	WEEE	Waste Electrical and Electronic Equipment
3792	WEF	World Economic Forum
3793	WEM	West Edmonton Mall
3794	WEU	Western European Union
3795	WEZ	Weapon Engagement Zone
3796	WF	Wallis and Futuna Islands (ISO 3166 digram)
3797	WFC	Women's Forage Corps (World War II UK)
3798	WFD	Weapon of Focused Destruction
3799	WFF	Wallops Flight Facility
3800	WFI	Water for Injection
3801	WFH	Working from home
3802	WFP	World Food Program
3803	WFZ	Weapons Free Zone
3804	WH	Wehrmacht Heer (German World War II army vehicle licence plate code)
3805	WHAM	Wisconsin Hydrogen-Alpha Mapping (telescope)
3806	WHI	Women's Health Initiative
3807	WHIP	Walks plus hits per inning pitched
3808	WHO	World Health Organisation
3809	WHS	(U.S.) Washington Headquarters Services
3810	WI	Western Sahara (FIPS 10-4 country code),Wisconsin (postal symbol),Women's Institute
3811	WIA	Wounded In Action,Wireless Institute of Australia (Amateur Radio)
3812	WIIFM	What's in it for me?
3813	WIMP	Weakly Interacting Massive Particle, Windows,Icons,Menus,Pointers
3814	WIP	Work In Progress
3815	WIPO	World Intellectual Property Organization
3816	WIPP	[Nuclear] Waste Isolation Pilot Plant
3817	WIYN	Wisconsin Indiana Yale NOAO telescope consortium
3818	WK	Wake Island (ISO 3166 digram,obsolete 1986)
3819	WKYP	Will Keep You Posted
3820	WL	Wehrmacht Luftwaffe (German World War II air force vehicle licence plate code)
3821	WLB	Women's Land Brigade (World War II Canada)
3822	WLF	Wallis and Futuna Islands (ISO 3166 trigram)
3823	WLOG	Without Loss Of Generality (see WOLOG)
3824	WM	Wehrmacht Marine (German World War II navy vehicle licence plate code)
3825	WMANUS	West Midlands Area National Union of Students
3826	WMD	World Movement for Democracy
3827	WMI	Wildlife Management Institute
3828	WMO	World Meteorological Organization
3829	WNA	World Nuclear Association
3830	WNF	Will Not Fix
3831	WNIT	Women's National Invitation Tournament
3832	WNSD	What's New,Scooby-Doo?
3833	WNW	West North-West
3834	WO	Warrant Officer
3835	WOF	Width of Fabric
3836	WOFT	Waste Of Fucking Time
3837	WOFTAM	Waste Of Fucking Time And Money
3838	WOI	Wheels Of Italy
3839	WOM	Write Only Memory
3840	WOS	Wilson Ornithological Society
3841	WOSM	World Organization of the Scout Movement, Worldwide Oil Spill Model
3842	WOT	Waste Of Time
3843	WP	White Phosphorus (ammunition)
3844	WPB	War Production Board during World War II
3845	WPE	World Pork Expo
3846	WPK	Wider Peacekeeping
3847	WPT	World Poker Tour,World Premiere Toons
3848	WR	Wide Receiver (football)
3849	WRAC	Women's Royal Army Corps (World War II UK)
3850	WRAIR	Walter Reed Army Institute of Research
3851	WRBWWRM	We Best What We Most
3852	WRC	World Rally Championship
3853	WRC	World Religions Conference
3854	WRNG	Warning
3855	WRS	Worldwide Reference System
3856	WRT	With respect to (especially in fields such as Mathematics)
3857	WRT	NHS Workforce Review Team
3858	WRT	The Linksys routers whose model name start with 'WRT'
3859	WRT	Third party firmware for the Linksys WRT routers and compatible models from other vendors.
3860	WRT	Wallace Roberts & Todd,LLC (Urban Planning and Design)
3861	WRT	Web Runtime (WRT) is a portable application framework developed by Nokia that allows the creation of widgets on the S60 Platform.
3862	WRT	Wholesale,Trade,Retail sector,category in employment and economics statistics
3863	WRT	Wireless Receiver/Transmitter (computer networks/IT)
3864	WRT	Wireless Ronin Technologies (digital signage)
3865	WRT	World Rally Team
3866	WRT	Writer Response Theory
3867	WRVS	Women's Royal Voluntary Service,now only known by the acronym (UK)
3868	WS	Samoa (ISO 3166 and FIPS 10-4 country code digram; from the country's former name of Western Samoa),Writer to the Signet (a Scottish solicitor)
3869	WSC	Weapon System Catalogue
3870	WSDL	Web Services Description Language
3871	WSJ	(The) Wall Street Journal
3872	WSL	White Star Line (shipping company),Women's Super League,used to describe England's top women's association football league and top women's rugby union competition,Workers' Socialist League (UK political party)
3873	WSROC	Western Sydney Regional Organisation of Councils
3874	WSSM	Winchester Super Short Magnum (family of rifle cartridges)
3875	WSTC	Women Signallers Territorial Corps (World War II UK)
3876	WSW	West South-West
3877	WTB	Wales Tourism Board,Warenterminbörse Hannover
3878	WTC	World Trade Center
3879	WTF	What the fuck?; also What a Terrible Failure (android)
3880	WTFH	What The Fucking Hell
3881	WTH	What the Hell
3882	WTO	World Trade Organization
3883	WU	Wabash University,Washington University in St. Louis,Western Union,Windows Update,Work unit,WU Wien (German Wirtschaftsuniversität Wien,Vienna University of Economics and Business Administration)
3884	WUBU2	What you been up to
3885	WUU2	What you up to (Internet slang popular with teenagers)
3886	WV	West Virginia (postal symbol)
3887	WVA	World Veterinary Association
3888	WVIAC	West Virginia Intercollegiate Athletic Conference
3889	WVR	Women's Volunteer Reserve (World War II UK)
3890	WVSC	Women's Volunteer Service Corps (World War II Canada)
3891	WVU	West Virginia University
3892	WW	see entry
3893	WWE	World Wrestling Entertainment
3894	WWI	World War I
3895	WWII	World War II
3896	WWIII	World War III
3897	WWJD	What would Jesus do?
3898	WWS	Wheaton Warrenville South High School
3899	WWWF	World Wide Wrestling Federation
3900	WXO	Weather [Executive] Officer
3901	WY	Wyoming (postal symbol)
3902	WZ	Swaziland (FIPS 10-4 country code)
3903	XBML	eXtended Business Modelling Language
3904	XC	Ninety (in Roman numerals)
3905	XCBL	XML Common Business Library
3906	XD	Used in chatrooms or email for smiley face. X is the eyes; squinted D is the mouth; XD.
3907	Xe	Xenon
3908	XFA	XML Forms Architecture
3909	XFC	Xtreme Fighting Championships
3910	XFD	Fighter aircraft made by Douglas
3911	Xfe	X File Explorer
3912	XFF	X-Forwarded-For
3913	XFG	Exfoliation glaucoma
3914	XFR	Automobile made by Jaguar
3915	XFT	X FreeType interface library
3916	XG	Automobile made by Hyundai
3917	XGA	Extended Graphics Array
3918	XGP	Extreme Game Player
3919	XHTML	eXtensible Hypertext Markup Language
3920	XI	Eleven (in Roman numerals)
3921	XII	Twelve (in Roman numerals)
3922	XIII	Thirteen (in Roman numerals)
3923	XIV	Fourteen (in Roman numerals)
3924	XIX	Nineteen (in Roman numerals)
3925	XJS	Automobile made by Jaguar
3926	XKB	X keyboard extension
3927	XKE	Automobile made by Jaguar
3928	XKR	Automobile made by Jaguar
3929	XML	eXtensible Markup Language
3930	XMSF	eXtensible Modelling and Simulation Framework
3931	XNA	X-No-Archive,Xeno Nucleic Acid
3932	XNC	X Northern Captain
3933	XNU	X is Not Unix
3934	XP	eXperience Point (role-playing games)
3935	XQJ	XQuery API for Java™
3936	XRAY	X-Ray
3937	XRML	eXtensible Rights Markup Language
3938	XS	Xiaolin Showdown
3939	XSL	eXtensible Style Language
3940	XTMH	eXtreme Technology Multiprocessor Hyperlanguage
3941	XUL	XML User Interface Language
3942	XV	Fifteen (in Roman numerals)
3943	XVI	Sixteen (in Roman numerals)
3944	XVII	Seventeen (in Roman numerals)
3945	XVIII	Eighteen (in Roman numerals)
3946	XWF	Xcitement Wrestling Federation
3947	XX	Twenty (in Roman numerals)
3948	Xyl	Xylobium
3949	XZN	Triple square screw driver
3950	y	Yocto-
3951	Y2K	Year Two Thousand
3952	yA	Yoctoampere
3953	Ya	Yottayear
3954	YaBPr	Yet another Brother Pat rant
3955	YABSLAG	Yet another boy singing like a girl
3956	YAC	Youth-Adult Committee
3957	YAFLA	Yet Another Five Letter Abbreviation
3958	YAP	Young Aspiring Professional
3959	YB	Youcef Benzouada (Southern Algerian name)
3960	Yb	Ytterbium
3961	yC	Yoctocoulomb
3962	YC	Yottacoulomb
3963	YDS	Yosemite Decimal System (climbing)
3964	YE	Yemen (ISO 3166 digram)
3965	YEM	Yemen (ISO 3166 trigram)
3966	yF	Yoctofarad
3967	YF	Yottafarad
3968	yg	Yoctogram
3969	Yg	Yottagram
3970	YGCO	Yamaneko Group of Comet Observers
3971	Ygo	Yu-Gi-Oh!
3972	yH	Yoctohenry
3973	YH	Yottahenry
3974	YHBT	You Have Been Trolled
3975	YHII	You Have It Inside
3976	YHS	Ya Hoor sur!
3977	Yi	Yobi
3978	Yippie	Youth International Party + suffix
3979	yJ	Yoctojoule
3980	YJ	Yottajoule
3981	yK	Yoctokelvin
3982	YK	Yottakelvin
3983	YKYFCW	You know you're from Christchurch when (post-earthquake joke)
3984	yL	Yoctolitre
3985	YL	Yottalitre
3986	ym	Yoctometre
3987	Ym	Yottametre
3988	YMMD	You Make My Day
3989	yN	Yoctonewton
3990	YN	Yottanewton
3991	YOLO	You Only Live Once
3992	YPA	Yards per Pass Attempt (football statistic)
3993	YPIO	Your Problem Is Obvious
3994	YPO	Young Presidents' Organization
3995	ys	Yoctosecond
3996	yS	Yoctosiemens
3997	Ys	Yottasecond
3998	YS	Yottasiemens
3999	YSI	Young Scots for Independence
4000	yT	Yoctotesla
4001	YTD	Year-To-Date
4002	YTM	Yield to Maturity
4003	YTS	Youth Training Scheme
4004	YTT	Yoshi Topsy-Turvy
4005	Yuppie	Young Urban Professional + suffix
4006	yV	Yoctovolt
4007	YV	Yottavolt
4008	yW	Yoctowatt
4009	YW	Yottawatt
4010	YYH	YuYu Hakusho
4011	z	Zepto
4012	Z	Zetta
4013	zA	Zeptoampere
4014	ZAF	South Africa (ISO 3166 trigram)
4015	ZAMS	Zero age main sequence
4016	ZAS	Zylinder Abschaltung System
4017	ZBT	Zero-Balance Transfer (accounting)
4018	zC	Zeptocoulomb
4019	ZC	Zettacoulomb
4020	ZCM	(n) ZENworks Configuration Management
4021	ZCMK	Zone Control Master Key
4022	ZCU	Zimbabwe Cricket Union
4023	\a	Atto-