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	A/C	Air Conditioned/Conditioning
23	A10	Atlantic 10 Conference
24	A1C	Airman First Class
25	A4	European standard office paper size
26	aA	Attoampere
27	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)
28	AAAS	American Association for the Advancement of Science
29	AAAV	Advanced Amphibious Assault Vehicle
30	AADAC	Alberta Alcohol and Drug Abuse Commission
31	AADD	Adult attention deficit disorder
32	AADT	annual average daily traffic
33	AAFES	Army and Air Force Exchange Service
34	AAIS	advanced airborne interceptor simulator
35	AAM	air-to-air missile
36	AAMOF	as a matter of fact
37	AAN	American Academy of Nursing
38	AANEAS	Anglo-Australian Near-Earth Asteroid Survey
39	AAODL	Atmospheric Aerosols and Optics Data Library
40	AAPC	Accounting and Auditing Policy Committee
41	AARP	American Association of Retired Persons (now officially known only by the initials)
42	AASPEM	advanced air-to-air system performance evaluation model
43	AAT	Australian Antarctic Territory
44	AAV	Amphibious Assault Vehicle
45	AAWC	anti-air warfare commander
46	AB	Able Seaman (both the rank and the occupation),Alberta (postal symbol)
47	ABB	ASEA Brown Boveri (Swiss-Swedish multinational company)
48	ABBA	Agnetha,Benny,Björn,Anni-Frid (Swedish pop group)
49	ABC	the first three letters of the Latin script known as the alphabet
50	ABC	abstinence, be faithful, condoms
51	ABC	Active Body Control
52	ABC	airway, breathing, circulation
53	ABC	Alcoholic Beverage Commission
54	ABC	alien big cat
55	ABC	always be careful
56	ABC	American-born Chinese
57	ABC	anti-lock brake controller
58	ABC	atomic, biological, chemical
59	ABCS	(U.S.) Army Battle Command System
60	ABET	Accreditation Board for Engineering and Technology
61	ABFIST	Advanced Bradley Full Crew Interactive Skills Trainer
62	ABGI	Addington-Barker Group International
63	ABIN	Agência Brasileira de Inteligência (Brazilian Intelligence Agency)
64	ABL	American Basketball League
65	ABLE	AirBorne Law Enforcement (police air support unit)
66	ABMC	American Battle Monuments Commission
67	ABN	Australian Business Number (a number issued by the Australian government as registration of a business and used for taxation purposes)
68	ABPI	Association of the British Pharmaceutical Industry
69	ABRSM	Associated Board of the Royal Schools of Music
70	ABS	anti-lock braking system
71	ABSA	Amalgamated Banks of South Africa
72	ABSTRIPS	abstraction-based STRIPS
73	ABV	Alcohol by volume
74	ABW	Aruba (ISO 3166 trigram)
75	Ac	Actinium
76	AC	Adriamycin-Cyclophosphamide (chemotherapy),Air Conditioning,Aircraftman,Alternating Current,Altocumulus,ante Christum (Latin,'before Christ'; see BC),ante cibum (Latin,'before meals'),Associazione Calcio (Italian,'football (soccer) club')
77	aC	Attocoulomb
78	AC1	Aircraftman 1st Class
79	AC2	Aircraftman 2nd Class
80	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
81	ACARS	Aircraft Communications Addressing and Reporting System
82	ACB	Asociación de Clubes de Baloncesto (Spanish for 'Association of Basketball Clubs')
83	ACCAC	Awdurdod Cymwysterau,Cwricwlwm ac Asesu Cymru (Qualifications,Curriculum and Assessment Authority for Wales)
84	ACCD	American Coalition of Citizens with Disabilities
85	ACCS	Air Communications and Control Squadron
86	ACDA	Arms Control & Disarmament Agency
87	ACDC	Alternating Current Direct Current,the name of an Australian rock music band,a term for a bisexual person,A/Cdre,Air Commodore
88	ACDT	Apple Certified Desktop Technician,Australian Central Daylight Time
89	ACES	Aerolíneas Centrales de Colombia (Spanish,'Central Colombian Airlines'),Auxiliary Campus Enterprises and Services of Alfred State College
90	ACF	Administration for Children and Families,American Car and Foundry,American Culinary Federation
91	ACHT	Average Call Hold Time
92	ACINT	Acoustic Intelligence
93	ACK	Acknowledge (telecommunications; cf. NAK)
94	ACL	Access Control List,Anterior cruciate ligament; the initialism can also refer to an injury to this ligament.,Atlantic Coast Line Railroad
95	ACLJ	American Center for Law and Justice
96	ACLOS	Automatic CLOS (missile control system)
97	ACLS	American Council of Learned Societies
98	ACLU	American Civil Liberties Union,American Communist Lawyers Union (pejorative slang for the above)
99	ACM	many,including Association for Computing Machinery; see entry
100	ACMC	(U.S.) Assistant Commandant of the Marine Corps
101	ACN	Airborne Communications Node,Australian Company Number (number issued by the Australian government as registration of a limited liability company)
102	ACNA	Anglican Church in North America
103	ACO	Airspace Control Order
104	ACOBA	Advisory Committee on Business Appointments
105	ACOG	American College of Obstetricians and Gynecologists
106	ACOM	(U.S.) Atlantic Command
107	ACORN	Association of Community Organizations for Reform Now
108	ACP	African,Caribbean and Pacific Group of States,Air Control Point
109	ACR	Advanced Concepts and Requirements
110	ACRI	African Crisis Initiative
111	ACRT	Advanced Concepts Research Tool simulator
112	ACS	Affiliated Computer Services (NYSE ACS),Alaska Communications Service,American Cancer Society,American Chemical Society,Association of Caribbean States,Australian Computer Society
113	ACSC	Army Command and Staff College (various nations)
114	ACST	American Cooperative School of Tunis
115	ACST	Australian Central Standard Time
116	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
117	ACTD	Advanced Concept Technology Demonstration
118	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)
119	ACTU	Australian Council of Trade Unions
120	ACU	American Conservative Union
121	ACUF	Advisory Committee on Undersea Features,American Conservative Union Foundation
122	AD	Anno Domini (Latin for 'In the year of our Lord')
123	ADA	Air Defence Artillery,American Dental Association,Assistant District Attorney,Americans with Disabilities Act (see also the similar but non-acronymic Ada programming language)
124	ADAC	Allgemeiner Deutscher Automobil-Club (German for 'General German Automobile Club')
125	ADAGE	Air Defense Air to Ground Engagement (simulation)
126	ADAP	AIDS Drug Assistance Program
127	ADAS	Asiago-DLR Asteroid Survey
128	ADAT	Alesis Digital Audio Tape (recording format)
129	ADATS	Agricultural Development and Training Society,Air Defence Anti-Tank System,Australian Defence Air Traffic System
130	ADB	Asian Development Bank
131	ADC	Aide De Camp,U.S. Air Defense Command (1946-1992),Apple Display Connector,Program Against Digital Counterfeiting of Currency
132	ADD	Analog Digital Digital (CD quality),Attention-Deficit Disorder,Administration on Developmental Disabilities
133	ADDIE	Analyze Design Develop Implement and Evaluate
134	ADDNS	Advanced Deployable Day/Night Simulation
135	ADGB	Air Defence of Great Britain
136	ADHD	Attention-Deficit Hyperactivity Disorder
137	ADHS	Attention-Deficit Hyperactivity Syndrome
138	ADI	Acceptable/Allowable Daily Intake
139	ADL	Anti-Defamation League
140	ADM	Administrative,,Admiral,and the U.S. Public Health Service Commissioned Corps,Archer Daniels Midland,Assistant Deputy Minister
141	ADOA	Air Defence Operations Area
142	ADP	Adenosine DiPhosphate,Army Doctrine Publication (UK,Canada,Australia),Automatic/Automated Data Processing
143	ADRG	Arc-second Raster Chart (ARC) Digitized Raster Graphics
144	ADS	Active Denial System,Astrophysics Data System,Attention Deficit Syndrome
145	ADSR	Attack,Decay,Sustain,Release (sound envelope specification)
146	ADT	Atlantic Daylight Time (UTC−3 hours)
147	ADTB	Army Doctrine and Training Bulletin
148	ADW	Air Defence Warning
149	AE	Armed Forces Africa/Canada/Europe/Middle East (postal symbol),United Arab Emirates (ISO 3166 digram),Artix Entertainment,American Eagle,A&E, Arts & Entertainment Network,the original name for the U.S. TV channel now known as A&E Network
150	AEDT	Australian Eastern Daylight Time
151	AEF	American Expeditionary Force
152	AEGIS	Airborne Early warning Ground environment Interface Segment (fake etymology)
153	AESR	Aeronautical Equipment Service Record
154	AEST	Australian Eastern Standard Time
155	aet	After extra time (Football)
156	AEW	Airborne Early Warning,Airborne Electronic Warfare
157	AF	Afghanistan (ISO 3166 digram),Air Force,As f*ck
158	aF	Attofarad
159	AFA	U.S. Air Force Academy,Asociación del Fútbol Argentino (Spanish for 'Argentine Football Association')
160	AFAIC	As Far As I'm Concerned
161	AFAICT	As Far As I Can Tell
162	AFAIK	As Far As I Know
163	AFAIR	As Far As I Remember/Recall
164	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
165	AFATDS	Advanced Field Artillery Tactical Data System
166	AFCEA	Armed Forces Communications and Electronics Association
167	AFDB	African Development Bank
168	AFES	Automatic Fire Extinguishing System
169	AFG	Afghanistan (ISO 3166 trigram)
170	AFI	French Territory of the Afars and Issas (ISO 3166 trigram; obsolete since 1977),'Agencia Federal de Investigaciónes' (México)
171	AFIST	Abrams Full Crew Interactive Skills Trainer
172	AFJ	April Fool's Joke
173	AFK	Away From Keyboard (Internet chat abbreviation)
174	AFLAC	American Family Life Assurance Company of Columbus
175	AFO	Association of Field Ornithologists
176	AFOSR	U.S. Air Force Office of Scientific Research
177	AFP	Agence France-Presse (French,'French Press Agency'), Australian Federal Police
178	AFQT	Armed Forces Qualification Test
179	AFRC	Air Force Reserve Command
180	AFRL	Air Force Research Laboratory
181	AFROTC	Air Force Reserve Officer Training Corps
182	AFRRI	(U.S.) Armed Forces Radiobiology Research Institute
183	AFRTS	Armed Forces Radio and Television Service
184	AFSC	U.S. Air Force Staff College (obsolete; replaced with JFSC), U.S. Air Force Systems Command
185	AFSCN	U.S. Air Force Satellite Control Network
186	AFSPC	Air Force Space Command
187	AFT	American Farmland Trust
188	AFV	armoured fighting vehicle
189	AG	air gunner,Aktiengesellschaft (German,'incorporated'),Antigua and Barbuda (ISO 3166 digram),Assemblies of God
190	ag	Attogram
191	Ag	Silver (Latin for 'argentum')
192	AGA	AB Gas-accumulator ('ah-gah',Swedish company),Advanced Graphics Architecture
193	AGARD	Advisory Group for Aerospace Research and Development
194	AGARDograph	Advanced Guidance for Alliance Research and Development publication
195	AGASA	Akeno Giant Air Shower Array (cosmic ray detector)
196	AGB	Internal Nintendo initialism (Advanced Game Boy) for Game Boy Advance
197	AGC	Adjutant General's Corps (British Army)
198	AGDC	Australian Game Developers' Conference
199	AGI	Auxiliary Group Intelligence
200	AGM	Annual General Meeting
201	AGN	Active Galactic Nucleus
202	AGO	Angola (ISO 3166 trigram)
203	AGP	Accelerated Graphics Port
204	AGRICOLA	Agriculture Online Access
205	AGS	Alaska Ground Station (LandSat)
206	AGTS	Advanced Gunnery Training System
207	AGU	American Geophysical Union
208	AGW	Autonomous Guided Weapon
209	Ah	Ampere-hour
210	AH	Attack Helicopter
211	aH	Attohenry
212	AHA	American Heart Association
213	AHCPR	Agency for Health Care Policy and Research (obsolete; replaced with AHRQ)
214	AHEC	Australian Health Ethics Committee
215	AHPCRC	Army High Performance Computing Research Center
216	AHQ	Air Headquarters
217	AHRQ	Agency for Healthcare Research and Quality
218	AHS	American Housing Survey
219	AI	Air Interdiction,Amnesty International,Artificial Insemination,Artificial Intelligence,Anguilla (ISO 3166 digram)
220	AIA	Aerospace Industries Association,American Institute of Architects,Anguilla (ISO 3166 trigram)
221	AIAA	American Institute of Aeronautics and Astronautics
222	AIC	African Independent Church,Animal Identification Coordinator
223	AICD	Australian Institute of Company Directors
224	AICMFP	And I Claim My Five Pounds
225	AID	U.S. Agency for International Development
226	AIDS	Acquired Immune Deficiency Syndrome
227	AIM	Australian Institute of Management
228	AIMP	Aurora Incremental Modernization Project
229	AIPAC	American Israel Public Affairs Committee
230	AIR	Aircraft Inventory Record
231	AIRFA	American Indian Religious Freedom Act
232	AIRS	Aerometric Information Retrieval System (obsolete; replaced with AFS)
233	AIS	Australian Institute of Sport,Automatic Identification System
234	AISB	(British Society for the Study of) Artificial Intelligence and the Simulation of Behaviour
235	aJ	Attojoule
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 (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 (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	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 (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	Argentina (ISO 3166 digram),Arkansas (postal symbol),Armour,Arunachal Pradesh (Indian state code)
326	Ar	Argon
327	ARAG	Advanced Research and Assessment Group
328	ARB	Administrative Review Board
329	ARBA	Army Review Boards Agency
330	ARCA	Automobile Racing Club of America
331	ARCENT	United States Army Central Command
332	ARDA	Advanced Research and Development Activity (became DTO 2006)
333	ARF	ASEAN Regional Forum
334	ARG	Argentina (ISO 3166 trigram)
335	ARH	Armed Reconnaissance Helicopter
336	ARNet	Acquisition Reform Network
337	ARP	Applied Research Programme
338	ARPA	Advanced Research Projects Agency
339	ARRC	ACE Rapid Reaction Corps
340	ARRF	Allied Rapid Reaction Force
341	ARRL	American Radio Relay League
342	ARSC	Arctic Region Supercomputing Center
343	ARSPACE	U.S. Army Space Command
344	ARTCC	Air Route Traffic Control Center
345	ARWG	Army Research Working Group
346	AS	ActionScript
347	AS	American Samoa (postal symbol; ISO 3166 digram),Assam / Asom (Indian state code)
348	As	Arsenic
349	aS	Attosiemens
350	ASA	AcetylSalicylic Acid,American Standards Association,Army Security Agency,Atlantic Southeast Airlines
351	ASAP	As Soon As Possible
352	ASARS	Advanced Synthetic Aperture Radar System,Airborne Search and Rescue System
353	asbl	association sans but lucratif (French 'Non-profit organisation')
354	ASBO	Anti-Social Behaviour Order
355	ASCAP	American Society of Composers,Authors,and Publishers
356	ASCC	Army Service Component Commander,Automatic Sequence Controlled Calculator,Air Standardization Coordinating Committee
357	ASCII	American Standard Code for Information Interchange
358	ASD	(U.S.) Assistant Secretary of Defense,autism spectrum disorder
359	ASDIC	Allied Submarine Detection Investigation Committee (Sonar)
360	ASEAN	Association of Southeast Asian Nations
361	ASFAR	Americans for a Society Free of Age Restrictions
362	ASG	Area Support Group
363	ASIC	Australian Securities and Investments Commission,Aviation Security Identification Card
364	ASICS	Anima sana in corpore sano (Latin for 'A sound mind in a sound body') (athletic shoe manufacturer)
365	ASIO	Australian Security Intelligence Organisation,Audio stream input output
366	ASIP	Advanced System Improvement Program,Army Stationing and Installation Plan,Application-specific instruction-set processor
367	ASL	Above Sea Level,American Sign Language (also known as Ameslan),'Age,Sex,Location?' (Internet slang)
368	ASM	Air-to-Surface Missile,American Samoa (ISO 3166 trigram),American Society for Metals,American Society for Microbiology
369	ASMB	American Society for Matrix Biology,Adult Swim Message Board
370	ASME	American Society of Mechanical Engineers,American Society of Magazine ors
371	ASMP	Air-Sol Moyenne Portée missile (French 'Medium-range air to surface'),Asymmetric multiprocessing
372	ASN	Associate of Science in Nursing
373	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
374	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
375	ASPI	Australian Strategic Policy Institute
376	ASR	Alkali-silica reaction,Anti Slip Regulation
377	ASRAAM	Advanced Short-Range Air-to-Air Missile
378	ASSC	Association for the Scientific Study of Consciousness
379	AST	Atlantic Standard Time (UTC−4 hours)
380	ASTIA	Armed Services Technical Information Agency
381	ASTM	American Society for Testing and Materials
382	ASTREA	Aerial Support To Regional Enforcement Agencies (sheriff's air support unit)
383	ASUW	AntiSUrface Warfare
384	ASVAB	Armed Services Vocational Aptitude Battery(taken by juniors in high school in the USA)
385	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)
386	ASW	AntiSubmarine Warfare
387	ASWORG	(U.S.) AntiSubmarine Warfare Operations Research Group
388	ASX	Advanced Stream Redirector,Australian Securities Exchange
389	AT	Anti-Tank,Austria (ISO 3166 digram),Advanced Technology (IBM Personal Computer/AT)
390	At	Astatine
391	aT	Attotesla
392	ATA	Advanced Technology Attachment (IBM Personal Computer),Afghan Transitional Authority,Allen Telescope Array,Antarctica (ISO 3166 trigram)
393	ATAC	Air Transportable Acoustic Communications
394	ATAPI	Advanced Technology Attachment Packet Interface
395	ATAT	Aiken Tactical Airsoft Team / Star Wars vehicle
396	ATB	Active Time Battle,British Antarctic Territory (ISO 3166 trigram; merged with AQ in 1979)
397	ATC	Air Training Corps, U.S. Air Transport Command (1942-1948), Athletic Trainer,Certified
398	ATESS	Aerospace and Telecommunications Engineering Support Squadron
399	ATF	French Southern Territories (ISO 3166 trigram),(U.S.) Bureau of Alcohol,Tobacco,Firearms and Explosives
400	ATG	Antigua and Barbuda (ISO 3166 and FIFA trigram)
401	ATGM	Anti-Tank Guided Missile
402	ATGW	Anti-Tank Guided Weapon
403	ATK	Attack
404	ATL	Atlanta,Georgia,the largest city and capital of Georgia
405	ATLAS	All-Terrain Lifter Army System,Assessment Tool for LAnd Systems
406	ATM	At The Moment
407	ATN	Dronning Maud Land (ISO 3166 trigram; merged with AQ in 1983)
408	ATO	Air Tasking Order,Australian Taxation Office
409	ATP	Adenosine TriPhosphate,Allied Tactical Publication,Ammunition Transfer Point
410	ATSD	(U.S.) Assistant Secretary of Defense
411	ATSDR	Agency for Toxic Substances and Disease Registry
412	ATV	All-Terrain Vehicle
413	ATWA	Air,Trees,Water,Animals
414	AU	African Union (was OAU before 2000),American University,Astronomical Unit,Australia (ISO 3166 digram)
415	Au	Gold (Latin 'Aurum')
416	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)
417	AUS	Australia (ISO 3166 trigram)
418	AUSCANNZUKUS	Australia,Canada,New Zealand,United Kingdom,United States (security designation)
419	Auslan	Australian Sign Language
420	AUT	Austria (ISO 3166 trigram)
421	AUTL	Army Universal Task List
422	AV	Audio-Visual,Aviation
423	Av	Aperture value (photographic mode)
424	aV	Attovolt
425	AVA	American Viticultural Area
426	AVB	Audio Video Bridging
427	AVDLR	Aviation Depot Level Repair
428	AVGP	Armoured Vehicle, General Purpose
429	AVIM	Aviation Intermediate Maintenance
430	AVLB	Armoured Vehicle Launched Body
431	AVM	Air Vice-Marshal, Arteriovenous malformation
432	AVO	Apprehended Violence Order
433	AVP	Arubaanse Volkspartij
434	AVP	Association of Volleyball Professionals
435	AVRE	Armoured Vehicle Royal Engineers
436	AVTB	Armoured Vehicle Test Bed,Aviation Test Bed
437	AVUM	Aviation Unit Maintenance
438	AVVO	Acute Vaginal Venereal Outbreak
439	AW	Aruba (ISO 3166 digram)
440	aW	Attowatt
441	AWA	American Wrestling Association
442	AWC	Air Warfare Centre
443	AWD	All Wheel Drive
444	AWE	Advanced Warfighting Experiment
445	AWP	Awaiting Parts (SM&R code)
446	AWSIM	Air Warfare SIMulation
447	AWST	Australian Western Standard Time
448	AWW	Above Water Warfare
449	AX	Åland Islands (ISO 3166 digram)
450	AXP	Ambulance eXchange Point
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),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,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)
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,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),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)
501	BR	Brazil (ISO 3166 digram) ,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 (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	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)
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	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 (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
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)
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,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,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	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	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	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 (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	CMMC	Corps Materiel Management Centre
787	CMML	Chronic MyeloMonocytic Leukemia,Continuous Media Markup Language
788	CMOS	Canadian Meteorological and Oceanographic Society,(The) Chicago Manual of Style,Complementary Metal Oxide Semiconductor
789	CMP	Common [Operating/Operational] Maritime Picture
790	CMPD	Charlotte Mecklenburg Police Department
791	CMPD	Chronic Myeloproliferative Disease
792	CMR	Cameroon (ISO 3166 trigram),Coaxial Main Rotors (helicopter type)
793	CMS	Centers for Medicare and Medicaid Services,The Chicago Manual of Style
794	CMT	Country Music Television
795	CMU	Carnegie Mellon University,Central Michigan University,Concrete Masonry Unit
796	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)
797	CMYK	Cyan Magenta Yellow Key/blacK (colour model)
798	CN	Canadian National (railway; also the AAR reporting mark for said company),China (ISO 3166 digram)
799	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
800	CNBC	Consumer News and Business Channel
801	CND	Campaign for Nuclear Disarmament,Computer Network Defence
802	CNE	Canadian National Exhibition,Computer Network Exploitation,Certified Network Engineer
803	CNF	Cost and Freight
804	CNI	Clinical Nursing Intern
805	CNI	Communications,Navigation and Identification
806	CNN	Cable News Network,Cellular Nonlinear Network
807	CNV	Copy-Number Variable (genetics)
808	Co	Cobalt
809	COB	Close Of Business [day]
810	COBRA	Consolidated Omnibus Budget Reconciliation Act of 1985
811	COD	Cash On Delivery,Democratic Republic of the Congo (ISO 3166 trigram)
812	CoDA	Co-Dependents Anonymous
813	COGENT	Cognitive Objects within a Graphical EnviroNmenT
814	COIL	Chemical Oxygen Iodine Laser
815	COK	Cook Islands (ISO 3166 trigram)
816	COL	Colombia (ISO 3166 trigram)
817	COLA	Cost Of Living Adjustment
818	CONAD	U.S. Continental Air Defense Command
819	CONMEBOL	Confederación Sudamericana de Fútbol or Confederação Sul-Americana de Futebol (respectively Spanish and Portuguese for 'South American Football Confederation')
820	CONUS	Continental United States
821	COO	Chief Operating Officer
822	COPE	U.K. Committee On Publication Ethics
823	COPUS	U.K. Committee on the Public Understanding of Science
824	CORD	Common Operational Requirements Document
825	CORE	Consortium for Oceanographic Research and Education
826	COS	Cooper Ornithological Society
827	COSER	COoperative SERvice
828	CoT	Car of Tomorrow (former NASCAR race car design)
829	COTS	Commercial Off The Shelf
830	CP	Canadian Pacific,Check Point,Command Post,Club Penguin
831	CPA	Certified Public Accountant
832	CPAC	Conservative Political Action Conference,Cable Public Affairs Channel ('see-pack')
833	CPCU	Certified Property Casualty Underwriter
834	CPD	Capabilities Production Document
835	CPE	Certificate of Proficiency in English
836	CPE	Certified Professional Ergonomist
837	CPF	Calibration Parameter File,Canadian Patrol Frigate
838	CPG	Clinical Practice Guideline
839	CPIM	Certification on Production and Inventory Management
840	CPIR	Computationally-Private Information Retrieval
841	CPON	Certified Pediatric Oncology Nurse
842	CPPCC	Chinese People's Political Consultative Conference
843	CPR	Canadian Pacific Railway
844	CPR	Cardiopulmonary resuscitation
845	CPSM	Continuous Phase Shift Modulation
846	CPSU	Communist Party of the Soviet Union
847	CPT	Contingency Planning Team
848	CPU	Contract Postal Unit
849	CPV	Cape Verde (ISO 3166 trigram)
850	CPX	Command Post eXercise
851	CQ	Carrier Qualification,Central Queensland,Charge of Quarters,Congressional Quarterly,Constellation Airlines (IATA airline designator)
852	CQD	Close Quarters Drill (Morse distress code preceding SOS: CQ 'calling all stations',D 'Distress'; often incorrectly interpreted as 'Come Quick,Distress')
853	Cr	Chromium
854	CR	Costa Rica (ISO 3166 digram)
855	CRAM	Combined Radiometric Correction Model
856	CRD	Capstone Requirements Document
857	CREB	Cyclic AMP-response Element Binding (protein)
858	CREEP	Committee for the Re-Election of the President,a pejorative nickname used by opponents
859	CREN	Christian Real Estate Network Real Estate Association
860	CRI	China Radio International,Costa Rica (ISO 3166 trigram)
861	CRIPL	Consolidated Remain-In-Place List
862	CRM	Cardiac Rhythm Management,Customer Relationship Management
863	CRO	Croatia (IOC and FIFA trigram,but not ISO 3166)
864	CRP	Committee for the Re-Election of the President,Control and Reporting Post
865	CRT	Cardiac Resynchronization Therapy,Cathode Ray Tube,Chinese Remainder Theorem
866	CRTC	Canadian Radio-television and Telecommunications Commission
867	Cs	Caesium
868	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
869	CSC	Closed Spacelike Curve (relativity),Compact system camera,Computer Sciences Corporation,Computer Security Centre,CSCC Canadian Society of Clinical Chemists
870	CSERIAC	(U.S. DoD) Crew Systems Ergonomics Information Analysis Center
871	CSG	Corps Support Group
872	CSI	see entry
873	CSICOP	Committee for the Scientific Investigation of Claims of the Paranormal (became the Committee for Skeptical Inquiry in 2006)
874	CSIP	Commercial Stable Image Platform (AMD)
875	CSIS	Canadian Security Intelligence Service ('seessiss'),(U.S.) Center for Strategic & International Studies
876	CSK	Czechoslovakia (ISO 3166 trigram; obsolete since 1993)
877	CSL	U.K. Central Science Laboratory
878	CSPI	Center for Science in the Public Interest
879	CSR	Control Supply Rate
880	CSR	Corporate Social Responsibility
881	CSRC	Conflict Studies Research Centre
882	CSRF	Cross-Site Request Forgery
883	CST	Central Standard Time (UTC−6 hours)
884	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)
885	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')
886	CTBT	Comprehensive [Nuclear] Test Ban Treaty
887	CTDB	Compact Terrain Data Base (file format)
888	CTE	Canton and Enderbury Islands (ISO 3166 trigram; obsolete 1984),Chronic traumatic encephalopathy
889	CTGF	connective tissue growth factor
890	CTI	Co-operative Target Identification
891	CTIL	Critical Tracked Items List
892	CTIS	Central Tire Inflation System
893	CTMS	Clinical Trial Management System
894	CTO	Chief Technical Officer,Chief Technology Officer
895	CTS	Clear-To-Send,Collective Training Standards,Communications Technology Service,Contract Technical Services,Conversation Time Sharing,COSMIC Top Secret
896	CTSS	Compatible Time-Sharing System
897	CTU	Counter Terrorist Unit (fictional branch of the Central Intelligence Agency in the television action series 24)
898	CTVT	Canine Transmissible Venereal Tumour
899	CU	Carrie Underwood, Cuba (ISO 3166 digram)
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
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 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	DA	Debtors Anonymous,U.S. Department of the Army,District Attorney
929	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')
930	DAES	Defence Acquisition Executive Summary,(UK MoD) Directorate of Analysis,Experimentation and Simulation
931	DAF	Dissolved Air Flotation,a technique used in water treatment
932	DAFIF	Digital Aeronautical Flight Information File
933	DAK	Disney's Animal Kingdom
934	DAO	Division Ammunition Officer
935	DAQ	Data acquisition,Delivered Audio Quality
936	DARE	Drug Abuse Resistance Education
937	DARO	(U.S.) Defense Airborne Reconnaissance Office
938	DARPA	U.S. Defense Advanced Research Projects Agency
939	DART	Disaster Assistance Response Team,Dublin Area Rapid Transit
940	DAS	Defensive Aids Suite
941	DASD	(U.S.) Deputy Assistant Secretary of Defense
942	DASL	Datapoint's Advanced Systems Language
943	DAU	(U.S.) Defense Acquisition University
944	DAWN	(U.S.) Drug Abuse Warning Network
945	dB	Decibel
946	DB	Deutsche Bahn
947	Db	Dubnium
948	DBA	De Bellis Antiquitatis (miniature wargaming rules)
949	DBBL	(U.S. Army Simulation Center) Dismounted Battlespace Battle Laboratory
950	DBDO	Desert BDO
951	DBE	Dame Commander of the Order of the British Empire
952	DBF	Detection By Fire (weapon launch signature)
953	DBR	De Bellis Renationis (miniature wargaming rules)
954	DBRA	Davis-Bacon Related Acts
955	DBS	Direct Broadcast Services (television)
956	DC	da capo,Italian Democrazia Cristiana,Digital Compass,Direct Current,District of Columbia (postal symbol),Douglas Aircraft Company,Dublin Core,Duty Cycle
957	DCA	Defensive Counter Air,Drum Corps Associates,DiChloroAcetate
958	DCAA	(U.S.) Defense Contract Audit Agency
959	DCAS	Devon and Cornwall Archery Society
960	DCC	Dallas Christian College
961	DCD	[Organ] Donation after Cardiac Death
962	DCE	Data Communication Equipment
963	DCFC	Death Cab for Cutie
964	DCI	Detection,Classification and Identification,Drum Corps International,Duellists' Convocation International,now known simply by the initials
965	DCL	Disney Cruise Line
966	DCN	Deacon
967	DCOM	Disney Channel Original Movie
968	DCSOPS	Deputy Chief of Staff for Operations and plans
969	DCW	Digital Chart of the World
970	DCYSC	Discovery Channel Young Scientist Challenge
971	DD	due diligence and dear daughter (increasingly prevalent on social mailing lists,blogs,and bulletin boards)
972	DDA	Deputy District Attorney
973	DDN	U.S. Defense Data Network
974	DDS	Doctor of Dental Surgery
975	DDT	Dichloro-Diphenyl-Trichloroethane (insecticide),Dynamic Debugging Tool (computing),DE[edit]
976	DE	Delaware (postal symbol),Germany (ISO 3166 digram)
977	DEA	Drug Enforcement Administration
978	DEA	Drug Enforcement Agency
979	DEC	Department of Environmental Conservation,Digital Equipment Corporation,Disasters Emergency Committee
980	DeCA	(U.S.) Defense Commissary Agency
981	DEFCON	Defence readiness condition
982	DEFRA	(UK) Department for Environment,Food and Rural Affairs
983	DELT	Dual Ended Line Test (ing)
984	DEM	Data Exchange Mechanism,Digital Elevation Model
985	DEN	Denmark (IOC and FIFA trigram,but not ISO 3166)
986	DEPSECDEF	(U.S.) Deputy Secretary of Defense
987	DERA	British Defence Evaluation and Research Agency (1995-2001)
988	DES	Deep Ecliptic Survey
989	DEU	Germany (ISO 3166 trigram)
990	DF	Direct Fire,Direction Finding,Distrito Federal (Spanish and Portuguese for 'federal district')
991	DFAS	(U.S.) Defense Finance and Accounting Service
992	DFB	Deutscher Fußball-Bund (German for 'German Football Association')
993	DFCB	Data Format Control Book
994	DfID	UK Department for International Development
995	DFM	Discrete Field Model see Superluminal motion
996	DFM	Dynamic Flowgraph Methodology
997	DFSP	Dermatofibrosarcoma protuberans
998	DfT	UK Department for Transport
999	DFTBA	Don't Forget To Be Awesome,a term commonly used by the Vlogbrothers
1000	DG	Dei gratia (Latin,'by the grace of God'),Director-General,Data General
1001	DGA	Direction générale des armées (French 'Armed Forces General Directorate')
1002	DGPS	Differential GPS
1003	DGZ	Desired Ground Zero
1004	DHA	DocosaHexaenoic Acid
1005	DHHS	(U.S.) Department of Health and Human Services
1006	DHRA	(U.S.) DoD Human Resources Activity
1007	DHS	U.S. Department of Homeland Security
1008	DHSS	UK Department of Health and Social Security
1009	DHTFYSS	U.S. Don't Have Time For You Silly S****
1010	DHY	Dahomey (ISO 3166 trigram; became BEN for Benin in 1977)
1011	DIA	U.S. Defense Intelligence Agency
1012	DIAC	Department of Immigration and Citizenship (Australia) [1]
1013	DiC	Design Island Centre (computing usually used in a teaching situation)
1014	DICASS	DIrectional Command Activated Sonobuoy System
1015	DIFAR	DIrectional Frequency Analysis and Recording
1016	DIME	Dense Inert Metal Explosive
1017	DIP	Dual In-line Package (electronics)
1018	DIPS	Defense independent pitching statistics
1019	DIR	Defence Industrial Research
1020	DISCOM	Division Support Command
1021	DISE	Deployable Intelligence Support Element
1022	DISSTAF	DIS Search and Target Acquisition Fidelity experiment
1023	DITY	Do-It-Yourself
1024	DIVAD	Division Air Defence
1025	DIY	Do It Yourself
1026	DJI	Djibouti (ISO 3166 trigram)
1027	DK	Denmark (ISO 3166 digram)
1028	DL	Dexter's Laboratory
1029	DLIC	Detachment Left-In-Contact
1030	DLIR	Depot-Level Inspection and Repair
1031	DLPMC	DorsoLateral PreMotor Cortex
1032	DLRP	Data Link Reference Point
1033	DLS	Deep Lens Survey
1034	DLSA	(U.S.) Defense Legal Services Agency
1035	DLSc	Diploma in Library Science
1036	DLTBGYD	Don't let the bastards grind you down
1037	DMC	(U.S.) Defense Management Council
1038	DMCA	Digital Millennium Copyright Act
1039	DMM	Digital Multimeter
1040	DMOC	Distributed Mission Operations Centre
1041	DMPA	(U.S.) Defense Medical Programs Activity
1042	DMPFC	DorsoMedial PreFrontal Cortex
1043	DMPK	Drug Metabolism and Pharmacokinetics
1044	DMRB	Design Manual for Roads and Bridges
1045	DMS	U.S. Defense Message System
1046	DMSP	U.S. Defense Meteorological Satellite Program
1047	DMT	Dimethyltryptamine
1048	DMV	Department of Motor Vehicles
1049	DMZ	DeMilitarized Zone
1050	DN	Deacon
1051	DNAW	Day Night All Weather
1052	DNDi	Drugs for Neglected Diseases initiative
1053	DNDO	U.S. Domestic Nuclear Detection Office
1054	DNK	Denmark (ISO 3166 trigram)
1055	DNM	Defence Nuclear Material
1056	DNR	Do Not Resuscitate
1057	DNS	Domain Name System
1058	DO	Dominican Republic (ISO 3166 digram),Doctor of Osteopathic Medicine
1059	DOA	Dead On Arrival,Dead or Alive
1060	DOB	Date Of Birth
1061	DOD	U.S. Department of Defense
1062	DODAF	U.S. Department of Defense Architectural Framework
1063	DoDD	U.S. Department of Defense Directive
1064	DoDEA	(U.S.) Department of Defense Education Activity
1065	DOE	U.S. Department of Energy
1066	DOHC	Dual-OverHead-Cam engine
1067	DOI	U.S. Department of the Interior
1068	DORA	Defence of the Realm Act
1069	DOS	Density of State
1070	DOTA	short-form for DEFENSE OF THE ANCIENTS a popular online epic game
1071	DotD	Deal of the Day (marketing gimmick)
1072	DOW	Died of Wounds
1073	DP	Division de production (Algerian petroleum company)
1074	DPA	UK Defence Procurement Agency
1075	DPCO	Double-Pole Change Over
1076	DPDT	Double-Pole Double-Throw
1077	DPI	Dots Per Inch
1078	DPICM	Dual-Purpose Improved Conventional Munition
1079	DPKO	UN Department for Peacekeeping Operations
1080	DPMO	(U.S.) Defense Prisoner of War/Missing Personnel Office
1081	DPPDB	Digital Point Positioning Database
1082	DPRK	Democratic People's Republic of Korea
1083	DPST	Double-Pole Single-Throw
1084	DQ	Dairy Queen
1085	DR	Dead Reckoning,Danmarks Radio (Danish Broadcasting Corporation)
1086	DRC	Democratic Republic of the Congo
1087	DRDC	Defence Research & Development Canada
1088	DREA	Defence Research Establishment Atlantic (obsolete 2002)
1089	DRES	Defence Research Establishment Suffield (obsolete 2002)
1090	DRET	Defence Research Establishment Toronto (obsolete 2002)
1091	DREV	Defence Research Establishment Valcartier (obsolete 2002)
1092	DRIC	(U.S.) Defense Research Information Center
1093	DRMS	(U.S.) Defense Revitalization and Marketing Service
1094	DRPR	Drawing Practices
1095	DRT	Document Related Technologies
1096	Ds	Darmstadtium
1097	DSAS	Disney Sing Along Songs
1098	DSB	(U.S.) Defense Science Board
1099	DSCS	U.S. Defense Satellite Communications System
1100	DSCSOC	DSCS Operations Center
1101	DSE	Dry Sheep Equivalent
1102	DSG	Direct-Shift Gearbox
1103	DSID	Dismounted Soldier Identification System
1104	DSL	Digital Subscriber Line
1105	DSLR	Digital single-lens reflex (camera)
1106	DSM	Diagnostic and Statistical Manual of Mental Disorders
1107	DSN	Deep Space Network
1108	DSPL	Design Specialists and Plans Language
1109	DSR	Deformed Special Relativity
1110	DST	Daylight Saving Time
1111	DSTL	British Defence Science and Technology Laboratory
1112	DSWA	(U.S.) Defense Special Weapons Agency
1113	DTA	Dental Technologists Association
1114	DTD	Digital Terrain Data
1115	DTG	Date-Time Group
1116	DTH	Direct To Home (television)
1117	DTI	UK Department of Trade and Industry
1118	DTIC	(U.S.) Defense Technical Information Center
1119	DTL	Diode-Transistor Logic (electronics)
1120	DTMF	Dual-tone multi-frequency signaling
1121	DTO	Disruptive Technology Office (was ARDA)
1122	DTR	Determine The Relationship
1123	DTSA	(U.S.) Defense Technology Security Administration
1124	DUMBO	Down Under the Manhattan Bridge Overpass (Brooklyn neighborhood)
1125	DUSD	(U.S.) Deputy Under-Secretary of Defense
1126	DVLC	UK Driver and Vehicle Licencing Centre
1127	DVM	Doctor of Veterinary Medicine
1128	DVO	Direct View Optics
1129	DVOM	Digital Volt-Ohm Meter
1130	DVP	various meanings (disambiguation page)
1131	DW	Drum Workshop
1132	DWIM	Do What I Mean
1133	DWM	Doctor Who Magazine
1134	DWTS	Dancing with the Stars
1135	DWW	Down with Webster
1136	DXA	Dual-energy X-ray Absorptiometry
1137	DXM	DeXtroMethorphan
1138	DY	Dahomey (ISO 3166 digram; obsolete since 1977)
1139	Dy	Dysprosium
1140	DZA	Algeria (ISO 3166 trigram)
1141	E	East
1142	EABU	Explain Acronyms Before Use
1143	EAC	Echelons Above Corps
1144	EAPC	Euro-Atlantic Partnership Council
1145	EAST	Experimental Advanced Superconducting Tokamak
1146	EBD	Electronic Brake Distribution
1147	EBE	Extraterrestrial Biological Entity
1148	EBSA	Employee Benefits Security Administration
1149	EBW	Electron Beam Welding
1150	EBW	Exploding BridgeWire
1151	ECASS	European Centre for Analysis in the Social Sciences [1]
1152	ECBR	European Coalition for Biomedical Research
1153	ECCM	Electronic Counter-Counter-Measures
1154	ECFS	Electronic Case Filing System
1155	ECG	Electrocardiogram
1156	ECHR	European Convention on Human Rights
1157	ECJ	European Court of Justice
1158	ECL	Emitter Coupled Logic (electronics)
1159	ECommHR	European Commission on Human Rights
1160	ECSC	European Coal and Steel Community (distant ancestor of the EU)
1161	ECT	ElectroConvulsive Therapy
1162	ECtHR	European Court of Human Rights
1163	EDA	European Defence Agency
1164	EDAC	Error Detection And Correction
1165	EDCS	Environmental Data Coding Specification
1166	EDH	Eastman Dental Hospital
1167	EDSA	Epifanio de los Santos Avenue (a major thoroughfare in Manila with great significance to post-1980 Philippines history)
1168	EDT	Eastern Daylight Saving Time (UTC−4 hours)
1169	EEC	European Economic Community (predecessor of the EU)
1170	EEG	ElectroEncephaloGram
1171	EENT	End Evening Nautical Twilight
1172	EEO	Equal Employment Opportunity
1173	EEOC	(U.S.) Equal Employment Opportunity Commission
1174	EEZ	Economic Exclusion Zone or Exclusive Economic Zone
1175	EFF	Electronic Frontier Foundation
1176	EFL	English as a Foreign Language
1177	EFM	Enterprise Feedback Management
1178	EFOA	European Fuel Oxygenates Association
1179	EFSA	European Food Safety Authority
1180	EFT	Electronic Fund Transfer
1181	EFV	Expeditionary Fighting Vehicle
1182	EG	Egypt (ISO 3166 digram)
1183	EGCG	EpiGalloCatechin-3-Gallate
1184	EGIS	Erieye Ground Interface Segment
1185	EGRET	Energetic Gamma-Ray Experiment Telescope
1186	EGY	Egypt (ISO 3166 trigram)
1187	EHF	Extremely High Frequency
1188	EHR	Equipment History Record
1189	Ei	Exbi
1190	EIA	Environmental Impact Assessment
1191	EIAH	Encyclopedia of Iranian Architectural History
1192	EIAH	Environnements Informatiques pour l'Apprentissage Humain
1193	EIC	East India Company
1194	EICS	East India Company's Service
1195	eID	electronic ID
1196	EIRP	Effective Isotropic Radiated Power
1197	EIS	Environmental Impact Statement
1198	EJ	Exajoule
1199	EK	Exakelvin
1200	EKG	Electrocardiogram (from German Elektrokardiogramm)
1201	EKMS	Electronic Key Management System
1202	EL	Exalitre
1203	ELINT	Electronic Intelligence
1204	ELL	English Language Learner
1205	ELM	Edge-Localised Mode (plasma physics)
1206	ELO	Electric Light Orchestra
1207	ELSS	Emergency Life Support Stores
1208	EM	ElectroMagnetism/ElectroMagnetic
1209	Em	Exametre
1210	EMA	European Medicines Agency
1211	EMCON	(Electromagnetic) Emissions Control
1212	EMDG	Euro-Missile Dynamics Group
1213	EMDR	Eye Movement Desensitisation and Reprocessing
1214	EMEA	Europe,Middle East and Africa
1215	EMG	ElectroMyoGraph
1216	EMP	ElectroMagnetic Pulse
1217	EMS	Emergency Medical Services
1218	EMT	Emergency Medical Technician
1219	EN	Corps of Engineers,Exanewton
1220	ENCODE	Encyclopedia of DNA Elements (human genome data project)
1221	ENE	East North-East
1222	ENG	England (FIFA trigram; not eligible for an ISO 3166 or IOC trigram)
1223	ENTEC	Euro NATO Training Engineer Centre
1224	ENVL	Envelope
1225	ENY	Enemy
1226	EOD	Explosive Ordnance Disposal
1227	EOG	ElectroOculoGraphy
1228	EOM	End of Message
1229	EOSAT	Earth Observation Satellite
1230	EOSDIS	Earth Observation Satellite Data and Information System
1231	EP	European Parliament
1232	EP	Extended play
1233	EPCOT	Experimental Prototype Community Of Tomorrow
1234	EPGS	EOS Polar Ground Sites
1235	EPIRB	Emergency Position Indicating Radio Beacon
1236	EPL	English Premier League
1237	EPOS	Electronic Point Of Sale
1238	EPPA	Employee Polygraph Protection Act
1239	EPR	European Pressurised [Nuclear] Reactor
1240	EQ	Emotional Quotient
1241	Er	Erbium
1242	ERCIM	European Research Consortium for Informatics and Mathematics
1243	ERI	Eritrea (ISO 3166 trigram)
1244	ERLAWS	Eastern Ruapehu Lahar Alarm and Warning System
1245	EROS	Earth Resources Observation System
1246	ERP	Engineer Regulating Point
1247	ERR	Eesti Rahvusringhääling
1248	ERS	Earth Resources Survey
1249	ERTS	Earth Resources Technology Satellite (became Landsat)
1250	ERV	Endogenous RetroVirus
1251	ES	Electronic warfare Support,Exasiemens,Spain (ISO 3166 digram; from the country's native name of España)
1252	ESD	ElectroStatic Discharge
1253	ESDP	European Security and Defence Policy
1254	ESE	East South-East
1255	ESH	Western Sahara (ISO 3166 trigram)
1256	ESL	English as a Second Language
1257	ESM	Electronic warfare Support Measures
1258	ESO	European Southern Observatory
1259	ESOL	English for Speakers of Other Languages
1260	ESPN	Entertainment and Sports Programming Network
1261	ESU	Emergency Services Unit
1262	ESV	Engineer Support Vehicle
1263	ET	Ethiopia (ISO 3166 digram)
1264	ETH	Ethiopia (ISO 3166 trigram)
1265	ETI	Extra-Terrestrial Intelligence
1266	ETLA	Extended TLA
1267	ETT	Embedded Training Team
1268	EU	European Union
1269	Eu	Europium
1270	EUCOM	(U.S.) European Command
1271	EUUSA	European Union and United States of America
1272	EV	Exavolt
1273	EVIL	Electronic viewfinder (with) interchangeable lens (a type of digital camera)
1274	EWTN	Eternal Word Television Network
1275	Exatesla	Extra Terrestrial
1276	EXREP	Expeditious Repair (SM&R code)
1277	EZ	Extraction Zone
1278	f	Femto
1279	fA	Femtoampere
1280	FA	Food Addicts in Recovery Anonymous
1281	FAA	Financial Aid Administrator,Fleet Air Arm,Functional Area Analysis
1282	FAAD	Forward Area Air Defence
1283	FAADEZ	Forward Area Air Defence Engagement Zone
1284	FAAFP	Fellow of the American Academy of Family Physicians
1285	FAAN	Fellow of the American Academy of Neurology
1286	FAAN	Fellow of the American Academy of Nursing
1287	FAAQ	Frequently Asked and Anticipated Questions
1288	FAASV	Field Artillery Ammunition Supply Vehicle
1289	FAB	Feline Advisory Bureau (UK feline charity)
1290	FACA	(US) Federal Advisory Committee Act
1291	FACH	Fuerza Aérea de Chile
1292	FACN	Fellow of the American College of Nutrition
1293	FACP	Fellow of the American College of Physicians
1294	FACTS	Flexible Alternating Current Transmission System
1295	FAM	Foreign Affairs Manual
1296	FAO	Food and Agriculture Organization
1297	FAPA	Fellow of the American Psychological Association
1298	FAPHA	Fellow of the American Public Health Association
1299	FARP	Forward Arming and Refuelling Point / Forward Area Rearm/refuel Point
1300	FASCAM	Family of Scatterable Mines[1]
1301	FASD	Fetal Alcohol Spectrum Disorder
1302	FASEB	Federation of American Societies for Experimental Biology
1303	FAT	Field Artillery Tractor
1304	FAVS	Future Armoured Vehicle System
1305	FAW	Football Association of Wales
1306	FBCS	Fellow of the British Computer Society
1307	FBIDST	Fellow of the British Institute of Dental and Surgical Technologists
1308	FBIS	Foreign Broadcast Information Service
1309	FBM	Board foot
1310	fC	Femtocoulomb
1311	FCC	U.S. Federal Communications Commission
1312	FCE	First Certificate in English
1313	FCF	Financial Free Cash Flow
1314	FCLA	Fraud Claims Law Associate
1315	FCO	UK Foreign and Commonwealth Office
1316	FCW	Florida Championship Wrestling
1317	FD	Falun Dafa
1318	FDA	Food and Drug Administration (U.S.)
1319	FDBK	(I) Feedback
1320	Fe	Iron (Latin Ferrum)
1321	FEAST	Forum for European-Australian Science and Technology Cooperation
1322	FEATS	Festival of European Anglophone Theatrical Societies link title
1323	FEBA	Forward Edge of the Battle Area
1324	FED	Field Emission Display
1325	FEDEP	Federation Development Process (Simulation)
1326	FEF	Frontal Eye Field (neurophysiology)
1327	FEMA	Farm Equipment Manufacturers Association, U.S. Federal Emergency Management Agency,Fire Equipment Manufacturers' Association
1328	FENS	Federation of European Neuroscience Societies
1329	FES	Flywheel Energy Storage
1330	FEST	Frankfurt English Speaking Theatre link title
1331	FET	Field-effect transistor
1332	FEZ	Fighter Engagement Zone
1333	fF	Femtofarad
1334	FF	Final Fantasy
1335	FFB	Frum From Birth (referring to an observant Jew born into a religiously observant family)
1336	FFC	Free For Chat
1337	FFE	Fukuoka Futures Exchange
1338	FFF	Fédération française de football (French for: French Football Federation)
1339	FFG	Guided Missile Frigate (hull classification symbol)
1340	FFOV	Forward Field Of View
1341	FFR	Fédération française de rugby (French for: French Rugby (Union) Federation)
1342	FFS	For Fuck's Sake
1343	FFT	Final Fantasy Tactics
1344	FG	Falun Gong
1345	fg	Femtogram
1346	FG	Fog (METAR Code)
1347	FGOTUS	First Gentleman of the United States
1348	FGR	Flickr Group Roulette
1349	fH	Femtohenry
1350	FHFIF	Foster's Home for Imaginary Friends
1351	FHI	Family Health International, Fuji Heavy Industries,Ltd.
1352	FI	Finland (ISO 3166 digram)
1353	FIAT	Fabbrica Italiana Automobili Torino (Italian for: Italian Car Factory of Turin)
1354	FIB	Fucking Illinois Bastard (Wisconsin slang, variants exist)
1355	FIBUA	Fighting In Built-Up Areas
1356	FIC	Fellowship for Intentional Community
1357	FID	Foreign Internal Defence
1358	FIE	Fly-In Echelon
1359	FIFA	Fédération internationale de football association (French for: International Association Football Federation)
1360	FIFe	Fédération internationale féline (French for: International Feline Federation)
1361	FIFO	First In, First Out
1362	FIFRA	Federal Insecticide, Fungicide, and Rodenticide Act
1363	FIGJAM	Fuck I'm Good, Just Ask Me
1364	FIMPT	Fellow of the Institute of Maxillofacial Prosthetists and Technologists
1365	FIN	Finland (ISO 3166 trigram)
1366	FINA	Fédération internationale de natation (French for: International Swimming Federation)
1367	FIRES	Fever Induced Refractory Epilepsy Syndrome or Febrile Infection-Related Epilepsy Syndrome
1368	FIS	Fédération internationale de ski (French for: International Ski Federation)
1369	FISA	Fédération Internationale des Sociétés d'Aviron (French for: International Federation of Rowing Associations)
1370	FISH	Fluorescence In-Situ Hybridisation
1371	FiST	Fire Support Team
1372	FITS	Flexible Image Transport System
1373	FIU	Florida International University
1374	fJ	Femtojoule
1375	FJ	Fiji (ISO 3166 digram)
1376	FJI	Fiji (ISO 3166 trigram)
1377	FJN	Financial Job Network
1378	FK	Falkland Islands (ISO 3166 digram)
1379	fK	Femtokelvin
1380	FKSM	Fort Knox Supplemental Manual
1381	FKT	Fastest Known Time
1382	fL	Femtolitre
1383	FL	Florida (postal symbol)
1384	fl	floruit (Latin for: living) (genealogy)
1385	FLA	Florida,Front Line Assembly,Future Large Aircraft
1386	FLAB	Four-letter abbreviation
1387	FLAC	Free Legal Advice Centres
1388	FLAC	Free Lossless Audio Codec
1389	FLAK	Flug-Abwehr-Kanone (German for: Anti-Aircraft Guns)
1390	FLB	Forward Logistics Base
1391	FLET	Forward Line of Enemy Troops
1392	FLG	Falun Gong
1393	FLIP	Flight Information Publication
1394	FLIR	Forward Looking InfraRed (sensor)
1395	FLK	Falkland Islands (ISO 3166 trigram)
1396	FLOT	Forward Line of Own Troops
1397	FLOTUS	First Lady of the United States (the wife of the President of the United States)
1398	FLQ	Free Legal Questions
1399	FLQ	Front de libération du Québec (French for: Québec Liberation Front)
1400	FLSA	Fair Labor Standards Act
1401	FLTSAT	Fleet Satellite
1402	FLTSATCOM	Fleet Satellite Communication System
1403	FLUBOS	Fat, Lazy, Useless, Bag Of Shit
1404	FM	Factory Mutual
1405	FM	Federal Magistrate (Australian post-nominal),Federated States of Micronesia (postal symbol; ISO 3166 digram),Field Manual,Flight Manager,Frequency Modulation (electronics)
1406	fm	Femtometre
1407	Fm	Fermium
1408	FMC	Federal Magistrates' Court (an Australian federal court,formerly FMS),Food Machinery Corporation (original name of the company now known as FMC Corporation)
1409	FMCA	Federal Magistrates' Court of Australia (used for citing decisions of the FMC other than family law decisions)
1410	FMCAfam	Federal Magistrates' Court of Australia: family (used for citing family law decisions of the FMC)
1411	FMCG	Fast Moving Consumer Goods
1412	FME	Formal Methods Europe
1413	FMECA	Failure Modes and Effect Criticality Analysis
1414	FMJD	Fédération Mondiale du Jeu de Dames
1415	FMLA	Family Medical Leave Act
1416	FoE	Friends of the Earth
1417	FOGC	Federal Oil and Gas Council
1418	FOH	Front Of House
1419	FOIA	Freedom of Information Act
1420	FOM	Federation Object Model
1421	FONSI	Finding of No Significant Impact
1422	FOO	Forward Observation Officer
1423	FOOP	Friends Of Organ Pipes (Volunteer group)
1424	FoS	Family of Systems
1425	FOSE	Fallout 3 Script Extender
1426	FOSE	Federal Office Systems Expo
1427	FOT	Free on truck
1428	FOTA	Fellow of the Orthodontic Technicians Association
1429	FOTC	Flight of the Conchords
1430	FOUO	For Official Use Only
1431	FPF	Federação Portuguesa de Futebol (Portuguese for: Portuguese Football Federation), Final Protective Fire
1432	FPS	Fire Prevention System
1433	FQ	French Southern and Antarctic Territories (ISO 3166 digram; obsolete 1979)
1434	FR	France (ISO 3166 digram)
1435	Fr	Francium
1436	FRA	Federal Railroad Administration, France (ISO 3166 trigram)
1437	FRAND	Fair,reasonable,and non-discriminatory (concept in standards-setting and intellectual property law)
1438	FRCP	Federal Rules of Civil Procedure,Fellow of the Royal College of Physicians
1439	FRICBM	Full Range ICBM
1440	FRO	Faroe Islands (ISO 3166 trigram)
1441	FRS	Fellow of the Royal Society, U.S. Federal Reserve System
1442	FRSA	Fellow of the Royal Society of Art
1443	FRY	Federal Republic of Yugoslavia
1444	fs	Femtosecond
1445	fS	Femtosiemens
1446	FSA	Fire Support Area, UK Food Standards Agency, Functional Solution Analysis
1447	FSC	Federal Supply Classification, Forest Stewardship Council (ecological pressure group)
1448	FSCL	Fire Support Co-ordination Line
1449	FSE	Fire Support Element
1450	FSF	Free Software Foundation
1451	FSH	Follicle Stimulating Hormone
1452	FSI	Fuel Stratified Injection
1453	FSS	Fire Support Station
1454	FSSP	Families of Structurally Similar Proteins
1455	FSTC	Foreign Science Technology Center (now NGIC)
1456	fT	Femtotesla
1457	FTC	Federal Trade Commission
1458	FTE	Full Time Equivalent
1459	FTL	Faster Than Light
1460	FTS	Flight Termination System used during some rocket launches
1461	FTS	Fuck That Shit
1462	FU	Smoke (METAR Code)
1463	FUBAR	Fucked/Fouled Up Beyond All Recognition/Repair
1464	fV	Femtovolt
1465	fW	Femtowatt
1466	FW	Forward
1467	FWC	Football World Cup
1468	FWF	Fixed Word Format
1469	FWI	French West Indies
1470	FWIW	For What It's Worth
1471	FWS	U.S. Fish and Wildlife Service
1472	FWT	Fresh Water Tank
1473	FXX	Metropolitan France (ISO 3166 trigram; obsolete 1997)
1474	FYA	For Your Agenda
1475	FYDP	Five-Year Defense Plan (U.S.)
1476	FYI	For Your Information
1477	FYROM	Former Yugoslav Republic of Macedonia
1478	FZDZ	Freezing Drizzle (METAR Code)
1479	FZFG	Freezing Fog (METAR Code)
1480	FZRA	Freezing Rain (METAR Code)
1481	g	Gram
1482	G3	Heckler & Koch G3
1483	GAAR	General Anti-Avoidance Rule (tax evasion)
1484	GAB	Gabon (ISO 3166 trigram)
1485	GABA	Gamma-AminoButyric Acid
1486	GAD	Generalized Anxiety Disorder
1487	GAF	Garfield and Friends
1488	GAO	U.S. Government Accountability Office
1489	GAW	Global Atmospheric Watch
1490	GB	United Kingdom of Great Britain and Northern Ireland (ISO 3166 digram) [glamour boy 7-9/10]
1491	GBBC	Great (Global) Backyard Bird Count
1492	GBE	Knight/Dame Grand Cross of the Order of the British Empire
1493	GBR	United Kingdom of Great Britain and Northern Ireland (ISO 3166 trigram)
1494	GCA	Graduate in Claims Administration
1495	GCD	see entry
1496	GCF	Greatest Common Factor
1497	GCI	Ground-controlled interception
1498	GCN	Gamma-ray burst Coordination Network
1499	GCS	Global Coordinate System
1500	GCSE	General Certificate of Secondary Education (UK)
1501	Gd	Gadolinium
1502	GD	Grenada (ISO 3166 digram)
1503	GDL	Game Definition Language
1504	GDR	General Distribution Release (Microsoft Term for a software service release; between Hotfix and Service Pack)
1505	GDR	German Democratic Republic (cf. DDR)
1506	GDW	Game Designers Workshop
1507	Ge	Germanium
1508	GEBCO	General Bathymetric Chart of the Oceans
1509	GEC	Great Engineering Challenge
1510	GED	General Educational Development (high school equivalency credential in the U.S. and Canada)
1511	GEEP	Geophysical Equipment Exploration Platform
1512	GEN	Full General (four stars) in the U.S. Army
1513	GeV	Gigaelectron-volt
1514	GEV	Ground Effect Vehicle
1515	GFCI	Ground Fault Circuit Interruptor (aka GFI)
1516	GFI	Ground Fault Interruptor (aka GFCI)
1517	GFL	German Football League (Germany's Bundesliga for American football; the English-language name is used in German without translation)
1518	GFN	Global Footprint Network
1519	GGK	Good God Karma
1520	GHA	Ghana (ISO 3166 trigram)
1521	GHB	gamma-Hydroxybutyric acid
1522	Gi	Gibi
1523	GIB	Gibraltar (ISO 3166 trigram)
1524	GIG	Global Information Grid
1525	GINO	Godzilla In Name Only
1526	GISS	General Impression of Size and Shape,Goddard Institute for Space Studies
1527	GJ	Gigajoule,Gujarat (Indian state code)
1528	GJD	Geocentric Julian Day
1529	GK	Gigakelvin
1530	GLAAD	Gay and Lesbian Alliance Against Defamation
1531	GLAC	General Ledger Accounting Code
1532	GLAST	Gamma-ray Large Area Space Telescope
1533	GLBA	Gramm-Leach-Bliley Act
1534	GLC	Gas-liquid chromatography
1535	GLP	Guadeloupe (ISO 3166 trigram)
1536	GLV	Gained Life Value
1537	Gm	Gigametre
1538	GM	The Gambia (ISO 3166 digram),GameMaster (role-playing),General Motors,Genetically Modified,Guru Meditation (computing)
1539	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
1540	GMB	The Gambia (ISO 3166 trigram),General,Municipal,Boilermakers (and Allied Trade Union)
1541	GMFSC	Ground Mobile Forces Satellite Communications
1542	GMO	Genetically Modified Organism
1543	GMPCS	Global Mobile Personal Communications by Satellite
1544	GNAS	Grand National Archery Society
1545	GNB	Guinea-Bissau (ISO 3166 trigram)
1546	GNP	Gross National Product
1547	GNQ	Equatorial Guinea (ISO 3166 trigram)
1548	GnRH	Gonadotropin-Releasing Hormone
1549	GOA	General of the Army (United States only)
1550	GOAT	Greatest Of All Time
1551	GOC	General Officer Commanding
1552	GOES	Geostationary Operational Environmental Satellite
1553	GOP	Grand Old Party
1554	gorp	granola,oats,raisins,peanuts (another name for trail mix),probably a backronym
1555	GOSC	General Officer Steering Committee
1556	GOSH	Great Ormond Street Hospital
1557	GOSP	Gas/Oil Separation Plant
1558	GOTS	Government off-the-shelf
1559	GOYADIN	Get Off Your Arse,Do It Now (anti-procrastination mantra)
1560	GP	General Practitioner,General Purpose,Grand Prix,Guadeloupe (ISO 3166 digram)
1561	GPA	Grade Point Average
1562	GPC	Global Path Cache
1563	GPIB	General-Purpose Instrumentation/Interface Bus
1564	GPO	General Post Office
1565	GPPC	Genetics and Public Policy Center
1566	GPR	Ground-Penetrating Radar
1567	GPS	General Problem Solver,Global Positioning System
1568	GPT	General Purpose Technology, Get paid to surf (an online business model)
1569	GQ	Equatorial Guinea (ISO 3166 digram),Gentlemen's Quarterly (the original name of the magazine now known simply as GQ),GR[edit]
1570	GR	Greece (ISO 3166 digram),Hail (METAR Code)
1571	GRAIL	Gravity Recovery and Interior Laboratory
1572	GRAS	Generally recognized as safe (FDA list)
1573	GRB	Gamma-Ray Burst
1574	GRC	Greece (ISO 3166 trigram)
1575	GRD	Grenada (ISO 3166 trigram)
1576	GRE	Graduate Record Examination,Greece (IOC and FIFA trigram,but not ISO 3166)
1577	grep	[search] Globally for Regular Expression,Print [lines]
1578	GRID	Gay-Related Immune Deficiency (original name of AIDS)
1579	GRid	Global Release Identifier,a music industry identifier from the RIAA and IFPI
1580	GriT	Girl raised in Texas (Woman presenting firm southern traits/beliefs)
1581	GRL	Greenland (ISO 3166 trigram)
1582	GRN	Grenada (IOC and FIFA trigram,but not ISO 3166),Goods Received Note
1583	Gs	Gigasecond
1584	GSA	U.S. General Services Administration
1585	GSD	Graphical Situation Display
1586	GSGB	(God send glamour boy 9-10/10)
1587	GSK	GlaxoSmithKline [good sexual karma]
1588	GSN	Game Show Network
1589	GSO	General Services Officer (U.S. Department of State)
1590	GSOH	Good Sense Of Humour
1591	GSP	Georges St-Pierre (Canadian MMA fighter)
1592	GSR	Gun Shot Residue
1593	GSS	Generic Security Services
1594	GSW	Gunshot wound
1595	GTD	Getting Things Done
1596	GTG	Got To Go (Internet chat)
1597	GTGN	Getty Thesaurus of Geographic Names
1598	GTK	Good To Know (Internet chat)
1599	GTM	Guatemala (ISO 3166 trigram)
1600	GU	Guam (postal symbol; ISO 3166 digram)
1601	GUF	French Guiana (ISO 3166 trigram)
1602	GUILT	Gangliated Utrophin Immuno Latency Toxin
1603	GULCR	Grupo de Usuarios de Linux de Costa Rica
1604	GUT	Grand Unification Theory
1605	GV	Gigavolt
1606	GWARS	Ground Warfare System (simulation)
1607	GWAS	Grand Western Archery Society
1608	GWOT	Global War on Terrorism
1609	GXE	Gene-enivronment interaction
1610	GXM	Matrox Graphics eXpansion Module
1611	GY	Guyana (ISO 3166 digram)
1612	GZ	Ground Zero
1613	GZK	Greisen-Zatsepin-Kuzmin cut-off (cosmic ray energies)
1614	h	Hecto
1615	H	Henry
1616	H1	First half of the year
1617	H2	Second half of the year
1618	HA	High Availability
1619	HAARP	High Frequency Active Auroral Research Program
1620	HAART	Highly Active Anti-Retroviral Therapy
1621	HAI	Human Awareness Institute
1622	HAL	Hardware Abstraction Layer
1623	HALO	High Altitude Low Opening (parachute jump)
1624	HAM	Amateur radio operator
1625	HANS	Head And Neck Support (device used in many race cars)
1626	HARM	High-speed Anti-Radiation Missile
1627	HAW	Heavy Antitank Weapon
1628	HAWK	Homing All the Way Killer (air defence system)
1629	HAZ	Heat-Affected Zone
1630	HAZMAT	Hazardous Materials
1631	HBCD	HexaBromoCycloDodecane
1632	HBO	Home Box Office
1633	HBR	Harvard Business Review
1634	HBT	Heterojunction Bipolar Transistor
1635	HBV	Hepatitis B Virus
1636	HCCI	Homogeneous Charge Compression Ignition
1637	HCF	Highest Common Factor
1638	HCSC	Higher Command and Staff Course
1639	HDL	High-Density Lipoprotein
1640	HDM	Human Decision-Making
1641	HDRA	Henry Doubleday Research Association
1642	He	Helium
1643	HE	High Explosive
1644	HEAT	High Explosive Anti-Tank (ammunition)
1645	HEBA	Hellenic Basketball Clubs Association
1646	HEER	High-Explosive Extended Range (ammunition)
1647	HEIC	Honourable East India Company
1648	HEMP	High-Altitude Electromagnetic Pulse
1649	HEOSS	High Earth Orbit Space Surveillance
1650	HEP	High-Explosive Plastic (ammunition)
1651	HEPA	High-Efficiency Particulate Air (filter)
1652	HESV	Heavy Engineering Support Vehicle
1653	HETT	Heavy Equipment Transporting Truck / Heavy Equipment Truck Tractor
1654	HEU	Highly Enriched Uranium
1655	Hf	Hafnium
1656	HF	High Frequency
1657	HFE	Human Fertilisation and Embryology (UK Act)
1658	HFE	The common-emitter current gain in a BJT transistor (also represented by βF). See: BJT
1659	HFEA	Human Fertilisation and Embryology Authority (UK)
1660	Hg	Mercury (Latin Hydrargyrum)
1661	HGC	UK Human Genetics Commission
1662	HGF	Human Growth Factor
1663	HGTV	Home & Garden Television
1664	HI	Hawaii (postal symbol)
1665	HIH	His (or Her) Imperial Highness
1666	HIM	His (or Her) Imperial Majesty
1667	HIMAD	High to Medium Altitude Air Defence (see also H/MAD)
1668	HIMEZ	High Altitude Missile Engagement Zone
1669	HIMYM	How I Met Your Mother
1670	HIPAA	U.S. Health Insurance Portability and Accountability Act
1671	Hipparcos	HIgh Precision Parallax COllecting Satellite
1672	Hird	Hurd of interfaces representing depth (cf. HURD)
1673	HiRISE	High Resolution Imaging Science Experiment
1674	HIT	Health Information Technology
1675	HIV	Human Immunodeficiency Virus
1676	HIWT	Hobart Institute of Welding Technology
1677	HJD	Heliocentric Julian Day
1678	HK	Hong Kong (ISO 3166 digram)
1679	HKG	Hong Kong (ISO 3166 trigram)
1680	HKS	HyperKinetic Syndrome
1681	hL	Hectolitre
1682	HL	Holding Line
1683	HLL	High-Level Language
1684	HLN	Headline News
1685	HLOS	High Level Output Specification
1686	HM	Heard Island and McDonald Islands (ISO 3166 digram)
1687	HMCE	Her/His Majesty's Customs and Excise (former UK government department; succeeded by HM Revenue and Customs)
1688	HMD	Heard and McDonald Islands (ISO 3166 trigram)
1689	HMF	HydroxyMethyl Furfural
1690	HMO	Health maintenance organization
1691	HMP	Her Majesty's Prison
1692	HMRC	Her/His Majesty's Revenue and Customs
1693	HMSO	Her Majesty's Stationery Office
1694	HMV	His Master's Voice
1695	HN	Honduras (ISO 3166 digram)
1696	HND	Honduras (ISO 3166 trigram)
1697	Ho	Holmium
1698	HOLLAND	Hope Our Love Lasts And Never Dies
1699	HOSTAC	Helicopter Operations from Ships Other Than Aircraft Carriers
1700	HOT	Highly Optimised Tolerance
1701	HOTAS	Hands on throttle-and-stick
1702	HOV	High Occupancy Vehicle
1703	hp	horse power
1704	HPA	UK Health Protection Agency
1705	HPCL	Hindustan Petroleum Corporation Limited
1706	HPLC	High Performance Liquid Chromatography
1707	HPT	High[er] Payoff Target
1708	HPV	Human Papilloma Virus
1709	HQ	HeadQuarters
1710	HRBL	High-level Representation of Behavior Language (original name of the Herbal language)
1711	HRD	Human Resource Development
1712	HRF	High iness Forces
1713	HRH	His (or Her) Royal Highness
1714	HRM	His (or Her) Royal Majesty
1715	HRM	Human Resource Management
1716	HRT	Hormone Replacement Therapy
1717	Hs	Hassium
1718	HSBC	The Hong Kong and Shanghai Banking Corporation
1719	HSC	Higher School Certificate
1720	HSM	High School Musical
1721	HSMAD	Human Science/Modeling and Analysis Data
1722	HSN	Home Shopping Network
1723	HSPH	Harvard School of Public Health
1724	HSSI	High-Speed Serial Interface
1725	HST	see entry
1726	HTA	HyperText Application
1727	HTFU	Harden The Fuck Up
1728	HTH	Hope That Helps
1729	HTI	Haiti (ISO 3166 trigram)
1730	HTR	Heated Towel Rail
1731	HTS	High-Temperature Superconducting wire
1732	HTTP	HyperText Transfer Protocol
1733	HU	Hungary (ISO 3166 digram)
1734	HUHA	Head up his/her ass (Marine salute; probably a backcronym)
1735	HUN	Hungary (ISO 3166 trigram)
1736	HURD	Hird of Unix-Replacing Daemons (cf. Hird)
1737	HV	Upper Volta (ISO 3166 digram; obsolete 1984)
1738	HVAP	High Velocity Armour Piercing (ammunition)
1739	HVHF	High velocity human factors
1740	HVM	High Velocity Missile
1741	HVO	Upper Volta (ISO 3166 trigram; obsolete 1984)
1742	HWM	Hardware morphing (computer graphics rendering)
1743	HXB	The glycoprotein Tenascian C
1744	HZ	Haze (METAR Code)
1745	Hz	Hertz
1746	IA	Iowa (postal symbol)
1747	IAAL	I Am A Lawyer
1748	IAB	International Association for Biologicals
1749	IAD	Ion Assisted Deposition
1750	IADS	Integrated Air Defence System
1751	IAEA	International Atomic Energy Agency
1752	IAF	{i} Industrial Areas Foundation
1753	IAFG	Information Assurance Focus Group
1754	IANA	Internet Assigned Numbers Authority
1755	IANAL	I Am Not A Lawyer
1756	IAS	Image Assessment System
1757	IASIP	It's Always Sunny in Philadelphia
1758	IATA	International Air Transport Association
1759	IATF	International Automotive Task Force
1760	IATSE	International Alliance of Theatrical Stage Employees
1761	IAUC	International Astronomical Union Circular
1762	IAW	In Accordance With
1763	IB	International Baccalaureate
1764	IBA	Important Bird Area
1765	IBD	Inflammatory Bowel Disease
1766	IBDM	Information Based Decision Making
1767	IBM	International Business Machines
1768	IBRD	International Bank for Reconstruction and Development (part of the World Bank)
1769	IBS	Irritable Bowel Syndrome
1770	IC	Ice Crystals (METAR Code),Integrated Circuit,[inner circle]
1771	ICANN	Internet Corporation for Assigned Names and Numbers
1772	ICAO	International Civil Aviation Organization
1773	ICBM	Intercontinental Ballistic Missile
1774	ICBN	International Code of Botanical Nomenclature
1775	ICE	In case of emergency, Immigration and Customs Enforcement
1776	ICES	International Council for the Exploration of the Sea
1777	ICF	Intelligent Community Forum
1778	ICMP	Internet Control Message Protocol
1779	ICNAF	International Commission for the Northwest Atlantic Fisheries (became NAFO in 1978)
1780	ICO	Intermediate Circular Orbit
1781	ICPE	International Conference on Pharmacoepidemiology,the annual conference of the International Society for Pharmacoepidemiology
1782	ICRAF	International Centre for Research in Agroforestry (a.k.a. World Agroforestry Centre since 2002)
1783	ICRISAT	International Crops Research Institute for the Semi-Arid Tropics
1784	ICRL	Individual Component Repair List
1785	ICRS	International Celestial Reference System
1786	ICSI	Intracytoplasmic Sperm Injection
1787	ICT	Information and communication technologies
1788	ICTH	Island Closest to Heaven/Hell Final Fantasy VIII
1789	ICV	Infantry Carrier Vehicle
1790	ICYMI	In Case You Missed It
1791	ID	Idaho (postal symbol),Identity,Indonesia (ISO 3166 digram),Infantry Division,Intelligent Design,ID10T Error,Idiot User Error (IT help desk inside joke)
1792	IDC	International Data Corporation
1793	IDDI	I don't do initialisms (see irony)
1794	IDGAF	I don't give a fuck
1795	IDK	I don't know
1796	IDL	Interface Definition Language
1797	IDN	Indonesia (ISO 3166 trigram)
1798	IEA	International Energy Agency
1799	IEC	International Electrotechnical Commission
1800	IED	Improvised Explosive Device
1801	IELTS	International English Language Testing System
1802	IER	Information Exchange Requirement
1803	IET	Initial Entry Training
1804	IET	Institution of Engineering and Technology
1805	IETF	Internet Engineering Task Force
1806	IEW	Intelligence and Electronic Warfare
1807	IFAB	International Football Association Board
1808	IFAH	International Federation for Animal Health
1809	IFAP	International Federation of Agricultural Producers
1810	IFO	Identified Flying Object (see also UFO)
1811	IFOV	Instantaneous Field of View
1812	IFPI	International Federation of Phonographic Industries
1813	IFRB	International Frequency Registration Board
1814	IFV	Infantry Fighting Vehicle
1815	IG	Inspector General
1816	IGNOU	Indira Gandhi National Open University
1817	IGS	International Ground Station
1818	IHH	Idiopathic Hypogonadotropic Hypogonadism
1819	IHO	International Hydrographic Organization
1820	IHR	Institute for Historical Review
1821	IHSI	Institutum Historicum Societatis Iesu (Jesuit Historical Institute)
1822	II	Two (in Roman numerals)
1823	IICA	Inter-American Institute for Cooperation on Agriculture
1824	IIE	Innovative Interstellar Explorer
1825	III	Three (in Roman numerals)
1826	IIRC	If I Recall/Remember Correctly
1827	IISS	International Institute for Strategic Studies
1828	IJN	Imperial Japanese Navy (World War II)
1829	IJWP	Interim Joint Warfare Publication
1830	ILDS	Improved Landmine Detection System
1831	ILO	International Labour Organization
1832	ILRI	International Livestock Research Institute
1833	ILY	I Love You [pronounced ILL-LEE]
1834	IM	Instant Message (internet speech)
1835	IMBD	International Migratory Bird Day
1836	IMDb	Internet Movie Database
1837	IME	In My Experience
1838	IMHO	In My Humble/Honest Opinion
1839	IML	International Mister Leather
1840	IMNSHO	In My Not So Humble Opinion
1841	IMPAC	International Merchant Purchase Authorization Card
1842	IMPACT	International Medical Products Anti-Counterfeiting Taskforce
1843	IMPATT	IMPact Avalanche Transit Time diode
1844	IMPT	Institute of Maxillofacial Prosthetists and Technologists
1845	IMRL	Individual Material iness List
1846	IMRO-Internal Macedonian Revolutionary Organization	Irish Music Rights Organisation
1847	IMsL	International Ms. Leather
1848	IMT	Integrated Management Tool
1849	IMU	International Mathematical Union
1850	IN	India (ISO 3166 digram),Indiana (postal symbol),Infantry
1851	In	Indium
1852	INA	Immigration and Nationality Act
1853	INAS	International Near-Earth Asteroid Survey
1854	INCITS	InterNational Committee for Information Technology Standards
1855	IND	India (ISO 3166 trigram)
1856	INDIGO	(U.S.) INtelligence DIvision Gaming Operation
1857	inet	the Internet
1858	INFORMS	(U.S.) Institute for Operations Research and the Management Sciences
1859	INFOSEC	Information Security
1860	INLA	Irish National Liberation Army
1861	INMARSAT	International Maritime Satellite organization
1862	INRIA	Institut national de recherche en informatique et en automatique
1863	INS	Immigration and Naturalization Service
1864	InSAR	Interferometric synthetic aperture radar
1865	INST	Information Standards and Technology
1866	INTERFET	International Force for East Timor
1867	INTSUM	Intelligence Summary
1868	IO	British Indian Ocean Territory (ISO 3166 digram)
1869	IOT	British Indian Ocean Territory (ISO 3166 trigram)
1870	IPB	Intelligence Preparation of the Battlefield
1871	IPL	Inferior Parietal Lobule
1872	IPO	Initial Public Offering
1873	IPT	Integrated Product/Project Team
1874	IPTS	Institute for Prospective Technological Studies
1875	IPTV	Internet Protocol TeleVision
1876	IPW	Interrogation of Prisoners of War
1877	Ir	Iridium
1878	IRAD	Internal Research and Development
1879	IRAN	(I) Inspect and Repair As Necessary
1880	IRAS	Infrared Astronomical Satellite
1881	IRB	International Rugby Board
1882	IRBM	Intermediate Range Ballistic Missile
1883	IREA	Intermountain Rural Electric Association
1884	IRINN	Islamic Republic of Iran News Network
1885	IRL	Ireland (ISO 3166 trigram),Industrial Research Limited,Indy Racing League,In real life
1886	IRN	Iran (ISO 3166 trigram)
1887	IRO	International Refugee Organisation
1888	IRQ	Iraq (ISO 3166 trigram)
1889	IRS	U.S. Internal Revenue Service
1890	IRST	Infra-red Search and Track
1891	IS	Iceland (ISO 3166 digram)
1892	ISAAA	International Service for the Acquisition of Agri-biotech Applications
1893	ISAR	Inverse SAR (Synthetic Aperture Radar)
1894	ISB	Intermediate Staging Base
1895	ISBN	International Standard Book Number (ISO 2108)
1896	ISCCP	International Satellite Cloud Climatology Project
1897	ISCII	Indian Standard Code for Information Interchange
1898	ISDN	Integrated Services Digital Network
1899	ISEF	Intel International Science and Engineering Fair
1900	ISEN	Internet Search Environment Number
1901	ISF	Internal Security Force
1902	ISIL	Islamic State of Iraq and the Levant
1903	ISIS	Institute for Science and International Security, or: Islamic State of Iraq and Syria
1904	ISL	Iceland (ISO 3166 trigram)
1905	ISLN	International Standard Lawyer Number (used initially by LexisNexis Martindale-Hubbell)
1906	ISMB	International Society of Matrix Biologists
1907	ISMC	Intelligent Sounding Meaningless Conversation
1908	ISOGP	Indian Society of Orthodontics for General Practitioners [2]
1909	ISPE	International Society for Pharmacoepidemiology
1910	ISRO	Indian Space Research Organisation
1911	ISSCR	International Society for Stem Cell Research
1912	ISSN	International standard serial number (ISO 3297)
1913	ISTC	Institute of Scientific and Technical Communications (UK)
1914	ISTS	Intel Science Talent Search
1915	ITA	Italy (ISO 3166 trigram)
1916	ITAG	Inertial Terrain-Aided Guidance
1917	ITALY	I'll Truly Always Love You
1918	ITAS	Improved Target Acquisition Sight
1919	ITC	InferoTemporal Cortex (neurophysiology)
1920	ITCZ	Intertropical Convergence Zone
1921	ITEC	Information Technology Exposition & Conference
1922	ITEMS	Interactive Tactical Environment Management System
1923	ITER	International Thermonuclear Experimental Reactor
1924	ITF	International Tennis Federation
1925	ITK	In The Know
1926	ITN	Independent Television News (British)
1927	ITT	International Telephone and Telegraph (U.S.)
1928	ITTO	International Tropical Timber Organization
1929	IUCN	International Union for the Conservation of Nature and Natural Resources (World Conservation Union)
1930	IV	Four (in Roman numerals),IntraVenous (as in intravenous drip or intravenous therapy)
1931	Iveco	Industrial Vehicles Corporation
1932	IVF	In Vitro Fertilisation
1933	IVI	Interchangeable Virtual Instrument
1934	IVIS	Inter-Vehicle Information System
1935	IVL	Inter-Visibility Line
1936	IVM	In Vitro [Oocyte] Maturation
1937	IVO	In Vicinity Of
1938	IW	Information Warfare
1939	IWARS	Infantry Warrior Simulation
1940	IWC	International Whaling Commission
1941	IWW	Industrial Workers of the World
1942	IX	Nine (in Roman numerals)
1943	IXT	IntraText digital library; IntraText lexical hypertext
1944	J	Joule
1945	J1	Joint [Manpower &] Personnel Directorate
1946	J2	Joint Intelligence Directorate
1947	J3	Joint Operations Directorate
1948	J4	Joint Logistics Directorate
1949	J5	Joint Strategic Plans & Policy Directorate
1950	J7	Joint Operational Plans & Interoperability Directorate
1951	JAFT	Just A Field Test
1952	JAL	Japan Airlines
1953	JALLC	Joint Analysis and Lessons Learned Centre (NATO)
1954	JAM	Jamaica (ISO 3166 trigram)
1955	JAMA	Journal of the American Medical Association
1956	JANET	Joint Academic Network
1957	JATO	Jet-Assisted Take-Off
1958	JB	Jail Bait
1959	JB	Junior Branch
1960	JBFSA	Joint Blue Force Situational Awareness
1961	JCDB	Joint Common Data Base
1962	JCDS	Joint Chiefs of the Defence Staff
1963	JCIDS	Joint Capabilities Integration and Development System
1964	JCL	Job Control Language
1965	JCP	Java Community Process
1966	JCS	Joint Chiefs of Staff
1967	JCW	Juggalo Championship Wrestling
1968	JDBC	Java Data Base Connectivity
1969	JDEM	Joint Dark Energy Mission
1970	JDL	Jewish Defense League
1971	JEFX	Joint Expeditionary Force eXperiment
1972	JET	Joint European Torus
1973	JEZ	Joint Engagement Zone
1974	JFACC	Joint Force Air Component Commander
1975	JFACTSU	U.S. Joint Forward Air Control Training and Standards Unit
1976	JFC	Joint Force Commander
1977	JFK	John Fitzgerald Kennedy or the airport named after him.
1978	JFLCC	Joint Force Land Component Commander
1979	JFMCC	Joint Force Maritime Component Commander
1980	JFO	Journal of Field Ornithology
1981	JFSOCC	Joint Force Special Operations Component Commander
1982	JFTX	Joint Field Training Exercise
1983	JH	Japan Highway Public Corporation
1984	JH	Jharkhand (Indian state code)
1985	JI	Joint Implementation
1986	JIB	Joint Information Bureau
1987	JIC	Joint Intelligence Centre
1988	JINI	Java Intelligent Network Infrastructure
1989	JITC	Joint Interoperability Test Command
1990	JIVE	Joint Institute for VLBI (Very Long Baseline Interferometry) in Europe
1991	JJAP	Japanese Journal of Applied Physics
1992	JL	Japan Airlines (IATA airline designator)
1993	JLA	Justice League of America
1994	JM	Jamaica (ISO 3166 digram)
1995	JMS	Java Message Service
1996	JO	Jordan (ISO 3166 digram)
1997	JOA	Joint Operations Area
1998	JOPES	Joint Operations Planning and Execution System
1999	JOR	Jordan (ISO 3166 trigram)
2000	JOTS	Joint Operations Tactical System
2001	JPL	Jet Propulsion Laboratory
2002	JPN	Japan (ISO 3166 trigram)
2003	JPOW	Joint Project Optic Windmill
2004	JRDF	Joint Rapid Deployment Forces
2005	JRE	Java Runtime Environment
2006	JREF	James Randi Educational Foundation
2007	JROC	Joint Requirements Oversight Council
2008	JROCM	JROC Memorandum
2009	JRRF	Joint Rapid Reaction Force
2010	JRSAI	Journal of the Royal Society of Antiquaries of Ireland
2011	JSAP	Japan Society of Applied Physics
2012	JSCSC	Joint Services Command and Staff College
2013	JSEAD	Joint Suppression of Enemy Air Defence (see SEAD)
2014	JSF	Joint Strike Fighter
2015	JSIMS	Joint Simulation System
2016	JSOA	Joint Special Operations Area
2017	JSOTF	Joint Special Operations Task Force
2018	JSP	JavaServer Page
2019	JSP	Joint Services Publication
2020	JSR	Java Specification Request
2021	JSS	Joint Support Ship Project
2022	JTC	Joint Training Confederation
2023	JTF	Joint Task Force
2024	JTFEX	Joint Task Force Exercise
2025	JTLS	Joint Theater Level Simulation
2026	JTMD	Joint Theatre Missile Defence
2027	JTN	Johnston Atoll (ISO 3166 trigram; obsolete 1986)
2028	JUGFET	JUnction Gate Field-Effect Transistor
2029	JUICE	JUpiter ICy Moon Explorer
2030	JUO	Joint Urban Operations
2031	JV	Joint Venture,Junior Varsity
2032	JW	Jehovah's Witnesses
2033	JWARS	Joint Warfare System (simulation)
2034	JWP	Joint Warfare Publication
2035	JY	Japanese Yen
2036	JZ	Joint Zone
2037	K	Kelvin,Potassium (Latin Kalium),Tanker (aircraft designation code)
2038	k	Kilo-
2039	K	picokelvin
2040	K9	Canine Police Unit
2041	Ka	Kamov Design Bureau
2042	kA	Kiloampere
2043	KA	Knowledge Acquisition,Karnataka (Indian state code)
2044	KAF	Kandahar Air Field
2045	KANUKOKA	Kalaallit Nunaanni Kommunit Kattuffiannit (Kalaallisut, Greenlandic Communities Association
2046	KARNAC	Knowledge Aided Retrieval in Activity Context
2047	KARR	Knight Automated Roving Robot (Knight Rider character)
2048	KATUSA	Korean Augmentation To United States Army
2049	KAZ	Kazakhstan (ISO 3166 trigram)
2050	KBE	Knight Commander of the Order of the British Empire
2051	KBO	Kuiper Belt Object
2052	KBVB	Koninklijke Belgische Voetbalbond (Dutch for Royal Belgian Football Association)
2053	kC	Kilocoulomb
2054	KCK	Kansas City,Kansas,Koma Civakên Kurdistan (Kurdish, Union of Communities in Kurdistan)
2055	KCL	King's College London
2056	KCMO	Kansas City,Missouri (pronounced: K-C-Moe)
2057	KCS	Kansas City Southern Railway (AAR reporting mark)
2058	KD	Kawasaki Disease,Kraft Dinner
2059	KE	Kenya (ISO 3166 digram),Kinetic Energy,Knowledge Engineering
2060	KEDO	Korean Peninsula Energy Development Organization
2061	KEN	Kenya (ISO 3166 trigram)
2062	KERA	Kentucky Education Reform Act (of 1990)
2063	kerma	Kinetic Energy Released in MAterial / in MAtter / per unit MAss
2064	KESR	Kent and East Sussex Railway.
2065	KET	Kentucky Educational Television,Key English Test
2066	kF	Kilofarad
2067	KFC	Kentucky Fried Chicken
2068	KFOR	UN Kosovo Force
2069	KFUPM	King Fahd University of Petroleum & Minerals
2070	KG	Kyrgyzstan (ISO 3166 digram)
2071	KGO	Knight of the Guelphic Order of Hanover
2072	KGZ	Kyrgyzstan (ISO 3166 trigram)
2073	KH	Cambodia (ISO 3166 digram)
2074	kH	Kilohenry
2075	KHL	Kontinental Hockey League
2076	KHM	Cambodia (ISO 3166 trigram)
2077	KHz	Kilohertz
2078	Ki	Kibi
2079	KI	Kiribati (ISO 3166 digram)
2080	KIA	Killed In Action
2081	KIDS	Knowledge-based Integrated Design System
2082	KIR	Kiribati (ISO 3166 trigram)
2083	KISS	Keep It Simple,Stupid / Keep It Short and Simple,Korean Intelligence Support System
2084	KIT	Keep In Touch
2085	KITECH	Korean Institute of Industrial Technology
2086	KITT	Knight Industries Two Thousand, Knight Industries Three Thousand
2087	kJ	Kilojoule
2088	kK	Kilokelvin
2089	KKK	Ku Klux Klan
2090	kL	Kilolitre
2091	KLENOT	KLEť Observatory Near Earth and Other unusual objects observations Team and Telescope
2092	KLOC	Kilo Lines Of Code
2093	KM	Comoros,Knowledge Management
2094	kN	Kilonewton
2095	KNA	Saint Kitts and Nevis (ISO 3166 trigram)
2096	KNVB	Koninklijke Nederlandse Voetbal Bond (Dutch for Royal Dutch Football Association)
2097	KO	Knocked Out
2098	KOR	Republic of Korea (ISO 3166 trigram)
2099	KP	Kim Possible
2100	KPMG	Klynveld,Peat,Marwick,Goerdeler
2101	KPNO	Kitt Peak National Observatory
2102	KQ	Kenya Airways (IATA airline designator)
2103	KR	Kiribati (FIPS 10-4 country code), Republic of Korea (ISO 3166 digram)
2104	Kr	Krypton
2105	KS	Kansas (postal symbol)
2106	kS	Kilosiemens
2107	KSC	Kennedy Space Center
2108	KSI	Killed or Seriously Injured
2109	KSU	Kansas State University
2110	KT	Knight of the Order of the Thistle, Knights Templar
2111	kT	Kilotesla
2112	KTS	Knight of the Tower and Sword (of Portugal)
2113	KUW	Kuwait (UNDP country code,IOC and FIFA trigram,but not ISO 3166)
2114	kV	Kilovolt
2115	KV	Kosovo
2116	kW	Kilowatt
2117	KW	Kuwait (ISO 3166 digram)
2118	KWB	Kids' WB!
2119	KWT	Kuwait (ISO 3166 trigram)
2120	KX	Cayman Airways (IATA airline designator)
2121	KY	Cayman Islands (ISO 3166 digram), Kentucky (postal symbol)
2122	KZ	Kazakhstan (ISO 3166 digram)
2123	KZN	KwaZulu-Natal
2124	La	Lanthanum
2125	LA	Laos (ISO 3166 digram), Louisiana (postal symbol), Los Angeles
2126	LAAS	Local Area Augmentation System, Los Angeles Astronomical Society
2127	LAB	Logistics Assault Base
2128	LabVIEW	Laboratory Virtual Instrumentation Engineering Workbench
2129	LACMA	Los Angeles County Museum of Art
2130	LAD	Laser Aiming Device
2131	LADW	Local Air Defence Warning
2132	LAESI	Local Authority & Emergency Service Information
2133	LANL	Los Alamos National Laboratory
2134	LAO	Laos (ISO 3166 trigram)
2135	LAR	Light Armoured Reconnaissance, Logistics Assistance Representative
2136	LARC	Livermore Advanced Research Computer (cf. LLNL)
2137	LARP	Live-Action Role-Playing
2138	Laser	Light Amplification by Stimulated Emission of Radiation (cf. Maser)
2139	LAT	Lowest Astronomical Tide (nautical charts),Licensed Athletic Trainer (used in many of the United States; see www.oata.org)
2140	LATA	Local Access Transport Area
2141	LATCH	Lower Anchors and Tethers for Children (U.S. standard for attachment points for child safety seats in passenger cars)
2142	LAV	Land Assault Vehicle, Light Armoured Vehicle, Lymphadenopathy-Associated Virus
2143	LAW	Light Antitank Weapon
2144	LAX	Los Angeles International Airport, The Latin American Xchange (professional wrestling)
2145	LB	Lebanon (ISO 3166 digram)
2146	LBH	Light Battlefield Helicopter, Lyman-Birge-Hopfield bands
2147	LBJ	Lady Bird Johnson,LeBron James,Light Bulb Joke,Little Beagle Johnson (the dog owned by Lyndon and Lady Bird Johnson),Lyndon Baines Johnson
2148	LBN	Lebanon (ISO 3166 trigram)
2149	LBNL	Lawrence Berkeley National Laboratory
2150	LBR	Liberia (ISO 3166 trigram)
2151	LBS	Location-Based Services
2152	LBT	Large Binocular Telescope
2153	LBW	Leg Before Wicket
2154	LBY	Libya (ISO 3166 trigram)
2155	LCA	Saint Lucia (ISO 3166 trigram)
2156	LCC	Land Component Commander
2157	LCCP	Light Contingency Communications Package
2158	LCD	Liquid Crystal Display
2159	LCM	Least/Lowest Common Multiple
2160	LCS	League of Legends Championship Series
2161	LDA	Lateral Drift Apparatus (paratroops)
2162	LDC	Lesser Developing/Developed Country
2163	LDL	Low-Density Lipoprotein
2164	LDV	Local Defence Volunteers (British Home Guard)
2165	LDW	Lane Departure Warning (ADAS)
2166	LEC	Local Exchange Carrier
2167	LED	Light-Emitting Diode
2168	LEGAD	Legal Advice
2169	Legs	level emotion gad speed
2170	LEMOSS	Long-Endurance MObile Submarine Simulator
2171	LEN	Large Extension Node
2172	LEP	Large Electron-Positron collider
2173	LER	Loss-Exchange Ratio
2174	LEU	Low-Enriched Uranium
2175	LF	Low Frequency
2176	LFO	Low Frequency Oscillation / Oscillator
2177	LFTR	Liquid fluoride thorium reactor
2178	LGB	Lesbian,Gay,Bisexual
2179	LGBT	Lesbian,Gay,Bisexual,Transgender
2180	LGBTQ	Lesbian,Gay,Bisexual,Transgender,Queer
2181	LGLO	Love God,Love Others
2182	LGM	Little Green Men
2183	LGS	Landsat Ground Station
2184	LH	Luteinising Hormone
2185	LHC	Large Hadron Collider
2186	LHS	Left Hand Side
2187	LI	Fifty-one (in Roman numerals),Liechtenstein (ISO 3166 digram)
2188	Li	Lithium
2189	LIBOR	London Interbank Offered Rate
2190	LIBS	Laser Induced Breakdown Spectroscopy
2191	LIE	Liechtenstein (ISO 3166 trigram)
2192	LIGO	Laser Interferometer Gravitational-Wave Observatory
2193	LINEAR	Lincoln Near-Earth Asteroid Research
2194	LISA	Laser Interferometer Space Antenna
2195	LIVE	Liquid Inertial Vibration Eliminator
2196	LJJ	Lord Justices of Appeal
2197	LK	Sri Lanka (ISO 3166 digram)
2198	LKA	Sri Lanka (ISO 3166 trigram)
2199	LKR4	Linkwitz-Riley 4th order (audio crossover type)
2200	LLAD	Low Level Air Defence
2201	LLB	Legum Baccalaureus (Latin: Bachelor of Laws)
2202	LLC	Limited Liability Company
2203	LLLTV	Low-Light Level Television
2204	LLNL	Lawrence Livermore National Laboratory
2205	LLP	Limited Liability Partnership
2206	LLTR	Low-Level Transit Route
2207	LMAO	Laughing My Ass Off (Internet shorthand)
2208	LMB	Lick My Balls
2209	LMFAO	Laughing My F**king Ass Off (Internet shorthand,electro-hop duo)
2210	LMN	Lifetime Movie Network
2211	LMS	Like My Status (Internet shorthand)
2212	LMV	() Light Motor Vehicle
2213	LNER	London and North Eastern Railway
2214	LNG	Liquefied Natural Gas
2215	LNO	Liaison Officer
2216	LNR	Ligue Nationale de Rugby (French for: 'National Rugby League')
2217	LOA	Limit Of Advance
2218	LOC	Level of Operational Capability, Limited Operational Capability
2219	LOD	Limit of Detection,see Detection limit
2220	LoD	Lines of Development (UK)
2221	LOFAR	Low Frequency Analysis and Recording
2222	LOGPAC	Logistics Package
2223	LOL	Laughing Out Loud (Internet shorthand)
2224	LOMEZ	Low Altitude Missile Engagement Zone
2225	LONEOS	Lowell Observatory Near-Earth-Object Search
2226	LOOGY	Lefty One-Out GuY,a sometimes pejorative nickname for the left-handed specialist in baseball
2227	LORTID	LOng Range Target IDentification
2228	LOS	Line Of Sight
2229	LOSAT	Line-Of-Sight Anti-Tank (missile)
2230	LOTA	Licentiate of the Orthodontic Technicians Association
2231	LOTIS	Livermore Optical Transient Imaging System
2232	LOTS	Logistics Over-The-Shore
2233	LP	Linkin Park,Linkup Point,Listening Post,Long Playing record,Louisiana Pacific (cf. LP Field)
2234	LPC	Linear Predictive Coding
2235	LPD	Landing Platform Dock (Navy hull classification),Low Probability of Detection
2236	LPG	Liquefied Petroleum Gas (cf. LNG)
2237	LPI	Low Probability of Intercept
2238	LPS	Landsat Processing System,LipoPolySaccharide
2239	Lr	Lawrencium
2240	LR	Liberia (ISO 3166 digram)
2241	LRC	Logistics iness Center
2242	LRGW	Long-Range Guided Weapon
2243	LRICBM	Limited Range ICBM
2244	LRIP	Low Rate Initial Production
2245	LRP	Logistics Release Point
2246	LRPE	Long-Range Planning Element
2247	LRS	Long Range Surveillance
2248	LRU	Line-Replaceable Unit
2249	LSAT	Law School Admission Test (often pronounced as 'el-SAT')
2250	LSI	Large-Scale Integration
2251	LSIF	Labour Sponsored Investment Fund
2252	LSND	Liquid Scintillator Neutrino Detector
2253	LSO	Lesotho (ISO 3166 trigram)
2254	LSST	Large Synoptic Survey Telescope
2255	LST	Landing Ship,Tank (World War II; also known,not entirely affectionately,as 'Large Slow Target')
2256	LSVW	Light Support Vehicle,Wheeled
2257	LT	Lithuania (ISO 3166 digram)
2258	Lt	Lieutenant
2259	LtC	Lieutenant-Colonel (U.S.)
2260	LTC	Long-Term Costing
2261	Ltd	Limited
2262	LTDP	Long-Term Defence Plan
2263	LTG	Lieutenant General,Lightning (METAR Code)
2264	LTI	Linear Time-Invariant
2265	LTM	Acronym for Laughing To Myself
2266	LTP	Long-Term Potentiation
2267	LTU	Lithuania (ISO 3166 trigram)
2268	LU	Acronym Love You
2269	LU	Loonatics Unleashed
2270	Lu	Lutetium
2271	LUCA	Last Universal Common Ancestor
2272	LUG	Linux User Group
2273	LULU	Locally Unwanted Land Use (urbanism)
2274	LUT	Limited User Test (ing),Local User Terminal
2275	LUVW	Light Utility Vehicle,Wheeled
2276	LUX	Luxembourg (ISO 3166 trigram)
2277	LV	Las Vegas,Latvia (ISO 3166 digram),Launch Vehicle,Leading Vehicle,Leave,Left Ventricle,Level Valve,Linking Verb,Liverpool Victoria
2278	LVA	Latvia (ISO 3166 trigram)
2279	LVAD	Left Ventricular Assist Device,Low-Velocity Airdrop
2280	LVEF	Left Ventricular Ejection Fraction
2281	LW	Land Warrior,Low Water (nautical charts)
2282	Lw	Lawrencium (obsolete 1963)
2283	LWR	Laser warning receiver
2284	LWRC	Land Warfare Resources Corporation
2285	LWS	Land Warrior System
2286	LX	Electrics (theatrical term)
2287	LX	Luxembourg (amateur radio ITU prefix),Swiss International Air Lines (IATA code)
2288	LY	Libya (ISO 3166 digram),Lithuania (amateur radio ITU prefix)
2289	LYAO	Laugh Your Ass Off
2290	LYLAS	Love You Like A Sister
2291	LZ	Bulgaria (amateur radio ITU prefix),Landing Zone
2292	M	Mega-,One thousand (in Roman numerals)
2293	m	Metre,Milli
2294	MA	Marijuana Anonymous,Master of Arts,Massachusetts (postal symbol),Megaampere,Morocco (ISO 3166 digram)
2295	Ma	Megaannum
2296	mA	Milliampere
2297	MAA	Mathematical Association of America
2298	MAAC	Metro Atlantic Athletic Conference
2299	MACE	Multi-Agent Computing Environment
2300	MACHO	MAssive Compact Halo Object
2301	MADD	Mothers Against Drunk Driving,MyoAdenylate Deaminase Deficiency,Multiply-Add
2302	MAF	Maintenance Action Form
2303	MAGIC	Major Atmospheric Gamma-ray Imaging Cherenkov (telescope)
2304	MAGNETAR	Metaprogrammable AGent NETwork ARchitecture
2305	MAGTF	Marine Air-Ground Task Force
2306	Mahasz	Magyar Hanglemezkiadók Szövetsége (Hungarian for: 'Association of Hungarian Record Companies')
2307	MALD	Miniature Air-Launched Decoy
2308	MANPADS	MAN-Portable Air Defence System
2309	MANPRINT	MANpower and PeRsonnel INTegration
2310	MAO	Molėtų astronomijos observatorija (Moletai Astronomical Observatory),MonoAmine Oxidase
2311	MAOI	Monoamine oxidase inhibitor
2312	MAPS	Monitoring Avian Productivity and Survivorship
2313	MAR	Morocco (ISO 3166 trigram)
2314	MarBEF	Marine Biodiversity and Ecosystem Functioning
2315	MARCENT	United States Marine Forces Central Command
2316	MARFORCC	Marine Force Component Commander
2317	MASAS	Monte Agliale Supernovae and Asteroid Survey
2318	Maser	Microwave Amplification by Stimulated Emission of Radiation
2319	MASH	Mobile Army Surgical Hospital
2320	MASINT	Measurement And Signature Intelligence
2321	MAVS	Mobile Artillery Vehicle System
2322	MB	Manitoba (postal symbol),Medal of Bravery (Canada)
2323	MBA	Main Battle Area,Main Belt Asteroid,Masters of Business Administration
2324	MBBL	(U.S. Armor Center) Mounted Battlespace Battle Laboratory
2325	MBCC	Migratory Bird Conservation Commission (U.S.)
2326	MBCS	Multi-Byte Character Set
2327	MBI	Moody Bible Institute
2328	MBIDST	Member of the British Institute of Dental and Surgical Technologists
2329	MBM	Meat and Bone Meal
2330	MBT	Main Battle Tank
2331	MBTI	Myers-Briggs Type Indicator
2332	mC	Millicoulomb
2333	MCDL	Model Composition Definition Language
2334	MCFT	Modified Compression Field Theory
2335	MCG	Melbourne Cricket Ground
2336	MCIS	Mellon Collie and the Infinite Sadness
2337	MCM	Mine Counter-Measures
2338	MCMV	Mine Counter-Measure Vessel
2339	MCR	My Chemical Romance
2340	MCSF	Marine Corps Security Forces
2341	MCT	Movement Control Team
2342	MCTIS	Mounted Co-operative Target Identification System
2343	Md	Mendelevium
2344	MDNA	Madonna's 12th studio album title (2012)
2345	MDO	Membership Driven Organisation
2346	MDP	Markov Decision Process
2347	MDT	Mountain Daylight Time (UTC-6 hours)
2348	MDV	Maldives (ISO 3166 trigram)
2349	Me	Messerschmitt
2350	MEAC	Mid-Eastern Athletic Conference (ME-ac)
2351	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)
2352	MEDEVAC	Medical evacuation
2353	MEDS	Mission Essential Data Set
2354	MEG	MagnetoEncephaloGraphy
2355	MELT	Metallic Line/Loop Test (ing)
2356	MEMS	Microelectromechanical System
2357	MER	Mars Exploration Rover
2358	MERL	Mitsubishi Electric Research Laboratories
2359	MES	Manufacturing Execution Systems
2360	METAR	[Meteorological] Aviation Routine weather report
2361	METOC	Meteorological and Oceanographic
2362	MeV	Megaelectronvolt
2363	MEX	Mexico (ISO 3166 trigram)
2364	MEZ	Missile Engagement Zone
2365	MF	Megafarad
2366	mF	Millifarad
2367	MG	Machine Gun,Madagascar (ISO 3166 digram),Major General,Morris Garage
2368	MGPAM	My Gym Partner's a Monkey
2369	MGS	Mobile Gun System
2370	mH	Millihenry
2371	MHC	Major Histocompatibility Complex
2372	MHHW	Mean Higher High Water (nautical charts)
2373	MHL	Marshall Islands (ISO 3166 trigram)
2374	MHLW	Mean Higher Low Water (nautical charts)
2375	MHRA	(UK) Medicines and Healthcare products Regulatory Agency
2376	MHW	Mean High Water (nautical charts)
2377	MHWN	Mean High Water Neaps (nautical charts)
2378	MHWS	Mean High Water Springs (nautical charts)
2379	MHz	Megahertz
2380	Mi	Mebi
2381	MIA	Missing In Action
2382	MICLIC	Mine Clearing Line Charge
2383	MICOM	Missile Command
2384	MID	Midway Islands (ISO 3166 trigram; obsolete 1986)
2385	MIDAS	Man-machine Integration Design and Analysis System
2386	MIDI	Musical Instrument Digital Interface
2387	MIDS	Multi-Function Information Distribution System
2388	MIFG	Shallow Fog (METAR Code)
2389	MIKE	Monitoring of Illegal Killing of Elephants
2390	MIL	Man-In-the-Loop
2391	MILC	Mirrorless interchangeable-lens camera
2392	MILF	Mother I'd Like to Fuck
2393	MIMOSA	MIcroMeasurements Of Satellite Acceleration
2394	MIMPT	Member of the Institute of Maxillofacial Prosthetists and Technologists
2395	MIRA	MILAN Infra-Red Acquisition (thermal sight)
2396	MIRV	Multiple Independent Reentry Vehicle
2397	MISREP	Mission Report
2398	MISSI	Multilevel Information System Security Initiative
2399	MITL	Man-In-The-Loop
2400	MITS	see entry
2401	mJ	Millijoule
2402	MJD	Modified Julian Day
2403	mK	Millikelvin
2404	MKG	Michael Kidd-Gilchrist (American basketball player)
2405	MKSA	Metre-Kilogram-Second-Ampere (system of units)
2406	mL	Millilitre
2407	MLB	Major League Baseball
2408	MLC	Member of the Legislative Council (in India)
2409	MLE	Maximum likelihood estimation
2410	MLHW	Mean Lower High Water (nautical charts)
2411	MLI	Mali (ISO 3166 trigram)
2412	MLL	Major League Lacrosse
2413	MLLW	Mean Lower Low Water (nautical charts)
2414	MLP	My Little Pony
2415	MLRS	Multiple-Launch Rocket System
2416	MLT	Malta (ISO 3166 trigram)
2417	MLW	Mean Low Water (nautical charts)
2418	MLWN	Mean Low Water Neaps (nautical charts)
2419	MLWS	Mean Low Water Springs (nautical charts)
2420	Mm	Megametre
2421	mm	Millimetre
2422	MMEV	Multi-Mission Effects Vehicle
2423	MMI	Magical MonkeyZ Inc.
2424	MMI	Man-Machine Interface
2425	MMI	McLean Meditation Institute
2426	MMIC	McLean Meditation Institute Certified
2427	MMO	Massively Multiplayer Online (computer game)
2428	MMOR	Master of Management in Operations Research
2429	MMORPG	Massively multiplayer online role-playing game
2430	MMPR	Mighty Morphin Power Rangers
2431	MMS	Multimission Modular Spacecraft
2432	Mn	Manganese
2433	mN	Millinewton
2434	MNB	Multinational Brigade
2435	MNE	Montenegro (ISO 3166 trigram)
2436	MNMF	Multi-National Maritime Force
2437	MNP	Northern Mariana Islands (ISO 3166 trigram)
2438	MNS	Mission Needs Statement
2439	Mo	Molybdenum
2440	MOA	Museum of Art (Brigham Young University)
2441	MOCAS	Mechanization Of Contract Administration Services
2442	MoD	Ministry of Defence (United Kingdom) and various other countries
2443	modem	Modulator-Demodulator
2444	Moe	Marvel of entertainment
2445	MOE	Measure Of Effectiveness
2446	MOF	Ministry of Finance (Japan)
2447	MOFA	Ministry of Foreign Affairs (Japan)
2448	MOID	Minimum Orbital Intersection Distance
2449	MOJWA	Movement for Oneness and Jihad in West Africa
2450	MOLO	Mobile Other Licensed Operator (UK)
2451	MOM	Master's Degree in Oriental medicine
2452	MOM	Message Oriented Middleware
2453	MoM	Multiple of the median
2454	MoMA	Museum of Modern Art (NYC)
2455	MOND	Modified Newtonian Dynamics
2456	MOO	Measure Of Outcome
2457	MOPP	Mission-Oriented Protective Posture
2458	MORP	Meteorite Observation and Recovery Project
2459	MOSFET	Metal-Oxide-Semiconductor Field-Effect Transistor
2460	MOT	Ministry of Transport (UK)
2461	MOTA	Member of the Orthodontic Technicians Association
2462	MOTESS	Moving Object and Transient Event Search System
2463	MOU	Memorandum Of Understanding
2464	MOW	Maintenance of way (also MW)
2465	MOZ	Mozambique (ISO 3166 trigram)
2466	MPa	Megapascal
2467	mPa	Millipascal
2468	MPAA	Motion Picture Association of America
2469	MPEC	Minor Planet Electronic Circular
2470	MPEG	Motion Pictures (Coding) Experts Group
2471	MPEV	Multi-Purpose Engineering Vehicle
2472	MPF	Maritime Prepositioning Force
2473	MPFC	Medial PreFrontal Cortex
2474	MPG	Miles Per Gallon
2475	MPMC	Medial PreMotor Cortex
2476	MPSI	Member of the Pharmaceutical Society of Ireland
2477	MPSoC	MultiProcessor System-on-Chip
2478	MPSRON	Maritime Propositioning Ship Squadron
2479	MR	Mauritania (ISO 3166 digram)
2480	MRAV	Multi-Role Armoured Vehicle
2481	MRBM	Medium Range Ballistic Missile
2482	MRC	Maintenance Requirements Card
2483	MRD	Motorized Rifle Division
2484	MRGW	Medium-Range Guided Weapon
2485	MRI	Magnetic Resonance Imaging
2486	MRL	Multiple Rocket Launcher
2487	MRPharmS	Member of the Royal Pharmaceutical Society (Great Britain)
2488	MRS	Magnetic Resonance Spectroscopy
2489	MRSA	Methicillin-resistant Staphylococcus aureus
2490	MRTFB	U.S. Major Range and Test Facility Base
2491	Ms	Megasecond
2492	mS	Millisiemens
2493	MSD	Minimum Safe Distance
2494	MSDB	Multi Source Data Base
2495	MSE	Multiple Subscriber Element
2496	MSG	Message
2497	MSLP	Mean Sea Level Pressure
2498	MSNBC	Microsoft National Broadcasting Company Cable news channel (see also msnbc.com)
2499	MSO	Multiple System Operator
2500	MSPB	Merit Systems Protection Board
2501	MSSA	Methicillin-susceptible Staphylococcus aureus
2502	Mt	Meitnerium
2503	mT	Millitesla
2504	MTBF	Mean Time Between Failures
2505	MtF	Male-to-female transsexual
2506	MTG	Magic: The Gathering
2507	MTQ	Martinique (ISO 3166 trigram)
2508	MTT	Methylthiazol tetrazolium (assay)
2509	MTTF	Mean Time To Failure
2510	MTTR	Mean Time To Recover
2511	MTWS	MAGTF Tactical Warfare System
2512	MUS	Mauritius (ISO 3166 trigram)
2513	mV	Millivolt
2514	MVC	Missouri Valley Conference
2515	MVFC	Missouri Valley Football Conference
2516	MVNO	Mobile virtual network operator
2517	mW	Milliwatt
2518	MWESH	Machismo Wizards Extended SHelter (operating system)
2519	MWI	Malawi (ISO 3166 trigram)
2520	MWOA	Mount Wilson Observatory Association
2521	MWTB	Mounted Warfare Test Bed
2522	MY	Malaysia (ISO 3166 digram)
2523	MYOB	Mind Your Own Business
2524	MYS	Malaysia (ISO 3166 trigram)
2525	MYT	Mayotte (ISO 3166 trigram)
2526	n	Nano
2527	N/A	Not Available, Not Applicable, or: No Answer
2528	N3F	National Fantasy Fan Federation
2529	nA	Nanoampere
2530	Na	Sodium (Latin Natrium)
2531	NAA	N-Acetylaspartate
2532	NAAD	North American Air Defense
2533	NAAQS	National Ambient Air Quality Standards
2534	NAAWS	NATO Anti-Air Warfare System
2535	NAC	National Agency Check,U.S. Naval Avionics Center,U.S. Navy Advanced Concepts,North Atlantic Council,Northern Area Command
2536	NACC	North Atlantic Cooperation Council
2537	NACISA	NATO Communications and Information Systems Agency
2538	NACMA	NATO Air Command and Control System Management Agency
2539	NACRA	North America Caribbean Rugby Association (more specifically rugby union)
2540	NAEC	U.S. Naval Air Engineering Center
2541	NAFERA	Native American Free Exercise of Religion Act
2542	NAFLD	NonAlcoholic Fatty Liver Disease
2543	NAFO	Northwest Atlantic Fisheries Organization
2544	NAFTA	North American Free Trade Agreement
2545	NAGPRA	Native American Graves Protection and Repatriation Act
2546	NAICS	North American Industry Classification System
2547	NAIL	Neurotics Anonymous
2548	NAILS	National Airspace Integrated Logistics System
2549	NAIRU	Non Accelerating Inflation Rate of Unemployment
2550	NAK	Negative Acknowledge
2551	NAM	Namibia (ISO 3166 trigram)
2552	NAMBLA	North American Man-Boy Love Association
2553	NAMRL	Naval Aerospace Medical Research Laboratory
2554	NaN	Not A Number (computing)
2555	NAO	UK National Audit Office
2556	NAPS	Navy Acquisition Procedures Supplement
2557	NARA	(U.S.) National Archives and Records Administration
2558	NARAL	National Abortion Rights Action League
2559	NARDAC	Naval Regional Data Automation Center
2560	NARDIC	U.S. Navy Acquisition Research and Development Information Center
2561	NARPV	National Association for Remotely Piloted Vehicles
2562	NASCAR	National Association for Stock Car Auto Racing
2563	NASDAQ	National Association of Securities Dealers Automated Quotations
2564	NASED	National Association of State Election Directors [1][2]
2565	NASH	Non-Alcoholic Steatohepatitis
2566	NASP	National Aerospace Plane
2567	NASS	National Association of Secretaries of State [3]
2568	NatGeo	National Geographic
2569	NaUKMA	National University of Kyiv-Mohyla Academy
2570	NAV	Navigation[al]
2571	NAVCAMS	Naval Communications Area Master Station
2572	NAVCC	National Audio-Visual Conservation Center
2573	NAVCENT	Naval Forces U.S. Central Command
2574	NAVDAC	Naval Data Automation Command
2575	NAVEUR	Naval Forces U.S. European Command
2576	NAVFOR	Naval Force
2577	NAVMACS	Naval Modular Automatic Communication Subsystem
2578	NAVNET	Navy Network
2579	NAVS	Non-Cooperative Airborne Vector Scoring
2580	NAVSAT	Navigation Satellite
2581	NAVSPACECOM	U.S. Navy Space Command
2582	NAVSPASUR	U.S. Naval Space Surveillance System
2583	NAVSTAR	Navigation Satellite Timing And Ranging
2584	NAVTACNET	Navy Tactical Network
2585	NAWC	U.S. Naval Air Warfare Center
2586	Nb	Niobium
2587	NBA	National Basketball Association
2588	NBL	National Basketball League (Australia)
2589	NBT	Nitroblue tetrazolium (assay)
2590	nC	Nanocoulomb
2591	NCA	National Command Authority
2592	NCAR	U.S. National Center for Atmospheric Research
2593	NCB	National Codification Bureau
2594	NCCAM	U.S. National Center for Complementary and Alternative Medicine
2595	NCCUSL	National Conference of Commissioners on Uniform State Laws (U.S.)
2596	NCDDR	U.S. National Center for the Dissemination of Disability Research
2597	NCI	U.S. National Cancer Institute
2598	NCL	New Caledonia (ISO 3166 trigram)
2599	NCLR	National Council of La Raza
2600	NCMO	No Commitment Make Out
2601	NCO	Non-Commissioned Officer
2602	NCP	Net Contracted Purchases
2603	NCR	National Cash Register Co.
2604	NCTR	Non-Co-operative Target Recognition
2605	NCW	Network Centric Warfare
2606	Nd	Neodymium
2607	NDAA	U.S. National Defense Authorization Act
2608	NDBP	Non-Departmental Public Body (Scotland)
2609	NDP	New Democratic Party (Canada)
2610	NDS	Nintendo DS
2611	Ne	Neon
2612	NECTEC	National Electronics and Computer Technology Center (Thailand)
2613	NEMS	National Energy Modeling System (USDOE-EIA)
2614	NEPA	National Environmental Policy Act
2615	NER	Niger (ISO 3166 trigram)
2616	NERICA	New Rice for Africa
2617	NESP	NSA/CSS Enterprise Standards Program
2618	NET	National Educational Television
2619	NETCU	(UK) National Extremism Tactical Co-ordination Unit
2620	NETL	(US) National Energy Technology Laboratory
2621	NETWARS	Network Warfare Simulation
2622	NEX	Navy EXchange
2623	nF	Nanofarad
2624	NF	Norfolk Island (ISO 3166 digram)
2625	NFER	National Foundation for Educational Research
2626	NFG	No Fucking Good
2627	NFHS	National Federation of State High School Associations
2628	NFI	Not F****** Interested
2629	NFK	Norfolk Island (ISO 3166 trigram)
2630	Nfld	Newfoundland
2631	NFPA	National Fluid Power Association (United States)
2632	NFT	No Further Text
2633	NGA	U.S. National Geospatial-Intelligence Agency, Nigeria (ISO 3166 trigram)
2634	NGATS	New Generation Army Targetry System
2635	NGH	Northern General Hospital
2636	NGO	non-governmental organization
2637	NGS	Naval Gunfire Support
2638	nH	Nanohenry
2639	NHANES	National Health and Nutrition Examination Survey
2640	NHB	New Hebrides (ISO 3166 trigram; obsolete 1980)
2641	NHB	No Holds Barred radio (Link)
2642	NHL	National Hockey League
2643	NHRA	National Hot Rod Association
2644	NHS	National Health Service (UK)
2645	Ni	Nickel
2646	NIAAA	U.S. National Institute on Alcohol Abuse and Alcoholism
2647	NIAG	NATO Industrial Advisory Group
2648	NIAID	National Institute of Allergies and Infectious Disease
2649	NIAMD	National Institute of Arthritis and Musculoskeletal Diseases
2650	NIB	New In Box (Internet auction/trading listings)
2651	NIBP	Non-invasive blood pressure monitor
2652	NicA	Nicotine Anonymous
2653	NICAP	National Investigations Committee on Aerial Phenomena
2654	NICE	UK. National Institute for Health and Clinical Excellence
2655	NICHD	National Institute of Child Health and Human Development [4]
2656	NICP	National Inventory Control Point
2657	NIDDK	National Institute of Diabetes and Digestive and Kidney Diseases
2658	NIDRR	National Institute on Disability Research and Rehabilitation
2659	NIEHS	National Institute of Environmental Health Sciences
2660	NIIN	National Item Identification Number
2661	NIMA	National Imagery and Mapping Agency (became NGA)
2662	NIMBY	Not In My Back Yard (See NOME)
2663	NIMG	Not In My Generation
2664	NIN	Nine Inch Nails (band)
2665	NIPR	National Institute of Polar Research (Japan)
2666	NIR	Northern Ireland (FIFA trigram; not eligible for an ISO 3166 or IOC trigram)
2667	NISAC	U.S. National Infrastructure Simulation and Analysis Center
2668	NISCAP	NSA Information System Certification and Accreditation Program
2669	NISER	National Institute of Science Education and Research
2670	NIST	National Institute of Standards and Technology
2671	NITFS	National Imagery Transmission Format Standard
2672	NIU	Niue (ISO 3166 trigram)
2673	nJ	Nanojoule
2674	NJ	New Jersey (postal symbol)
2675	NJHS	National Junior Honor Society
2676	NJPW	New Japan Pro Wrestling
2677	nK	Nanokelvin
2678	NKA	No Known Allergies
2679	nL	Nanolitre
2680	NLB	Non-Linear Battlefield
2681	NLD	Netherlands (ISO 3166 trigram)
2682	NLF	National Liberation Front (disambiguation)
2683	NLL	National Lacrosse League
2684	NLP	Natural Language Processing,Neuro-Linguistic Programming (pseudoscience)
2685	NLRB	National Labor Relations Board
2686	NLW	Non-Lethal Weapon
2687	nm	Nanometre
2688	NM	New Mexico (postal symbol)
2689	NMCI	Navy Marine Corps Intranet
2690	NMCS	Not Mission Capable Supply (SM&R code)
2691	NMD	U.S. National Missile Defense
2692	NMHNFG	Not Made Here,No Fucking Good
2693	NMN	No middle name
2694	NMR	Nuclear Magnetic Resonance
2695	NMSG	NATO Modelling and Simulation Group
2696	nN	Nanonewton
2697	NNE	North North-East
2698	NNSA	U.S. National Nuclear Security Administration
2699	NNW	North North-West
2700	NO	Nitric Oxide,Normally Open,Norway (ISO 3166 and FIPS 10-4 country code digram)
2701	No	Nobelium
2702	NOAA	U.S. National Oceanic and Atmospheric Administration
2703	NOAF	Norwegian Air Force
2704	NOAO	National Optical Astronomy Observatory
2705	NOC	UK. National Oceanography Centre
2706	NODEF	NATO Oceanographic Data Exchange Format
2707	NOGI	New Orleans Grande Isle (award for diving)
2708	NOLA	New Orleans,Louisiana (LA is the official postal code for Louisiana)
2709	NOLF	Navy OutLying Field
2710	NoMBO	Non-mine,Mine-like Bottom Object
2711	NOME	Not on Mars Either
2712	NOME	Not on Mars Either (see NIMBY)
2713	NOPA	National Office Products Alliance,National Office Products Association
2714	NOR	Norway (ISO 3166 trigram)
2715	NORELPREF	No religious preference
2716	NORTHAG	Northern Army Group
2717	NOS	Network Operating System,New Old Stock (Internet auction/trading listings),Nitric Oxide Synthase (enzyme)
2718	NOSA	NATO OSI Security Architecture
2719	NOTAFLOF	No One Turned Away For Lack Of Funds
2720	NOW	National Organization for Women
2721	NP	National Permit,A permit in India for trucks so they can go anywhere in the nation
2722	Np	Neap tide (nautical charts),Neptunium
2723	NP	Nepal (ISO 3166 and FIPS 10-4 country code digram)
2724	NPB	Nippon Professional Baseball
2725	NPC	National Postgraduate Committee,National Provincial Championship (New Zealand rugby competition,now defunct),Navigation Planning Chart
2726	NPCS	Non-Passenger Coaching stock (in Railways)
2727	NPD	Nationaldemokratische Partei Deutschlands (German)
2728	NPDI	New Product Development and Introduction
2729	NPG	Needline/Network Participation Group
2730	NPH	Normal Pressure Hydrocephalus
2731	NPL	National Priorities List,Nepal (ISO 3166 trigram)
2732	NPO	nothing by mouth
2733	NPOV	Neutral Point Of View
2734	NQ	Dronning Maud Land (ISO 3166 digram; obsolete 1983)
2735	NQOCD	Not Quite Our Class,Dear (or Darling). (Upper-class English slang)
2736	NR	Nauru (ISO 3166 and FIPS 10-4 country code digram)
2737	NRA	National Rifle Association
2738	NRAO	National Radio Astronomy Observatory
2739	NRC	(U.S.) National Research Council,Nuclear Regulatory Commission (U.S.)
2740	NRDC	(U.S.) Natural Resources Defense Council
2741	NREL	(U.S.) National Renewable Energy Laboratory
2742	NRK	Norsk Rikskringkasting (Norwegian Broadcasting Corporation)
2743	NRMP	National Resident Matching Program (U.S. medicine)
2744	NRO	(U.S.) National Reconnaissance Office
2745	NRT	Near Real Time
2746	NRTA	National Rat Terrier Association,National Retail Tenants Association,National Retired Teachers Association,Northwest Regional Transmission Association
2747	NRU	Nauru (ISO 3166 trigram)
2748	ns	Nanosecond
2749	nS	Nanosiemens
2750	NS	Norfolk Southern Railway (AAR reporting mark),Nova Scotia (postal symbol),Suriname (FIPS 10-4 country code)
2751	NSA	U.S. National Security Agency,Naval Support Activity,No Strings Attached
2752	NSABB	National Science Advisory Board for Biosecurity
2753	NSAID	Non-Steroidal Anti-Inflammatory Drug
2754	NSB	Norges Statsbaner (Norwegian State Railways)
2755	NSC	National Security Council
2756	NSDAP	Nationalsozialistische Deutsche Arbeiterpartei (German: 'German National Socialist Workers Party',the formal name of the Nazi Party)
2757	NSDL	National Science Digital Library (US)
2758	NSG	National System for Geospatial-Intelligence
2759	NSN	National Stock Number
2760	NSNA	National Student Nurses' Association
2761	NSO	National Standardization Office (ABCA)
2762	NSS	(U.S.) Naval Simulation System
2763	NST	(UK) Nimrod Software Team
2764	NSTAC	National Security Telecommunications Advisory Committee
2765	NSV	Nikitin-Sokolov-Volkov heavy machine gun (Russian НСВ Никитина-Соколова-Волкова) ru:ПулеметНСВ-12,7 'Утес'
2766	NSW	New South Wales (postal symbol)
2767	nT	Nanotesla
2768	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)
2769	NTC	National Training Center,Negative Temperature Coefficient (thermistor)
2770	NTDS	Naval Tactical Data System
2771	NTP	Network Time Protocol
2772	NTR	Network Time Reference
2773	NTRA	National Thoroughbred Racing Association
2774	NTSB	National Transportation Safety Board
2775	NTSC	National Television Standards Committee (colloquially,Never Twice the Same Color)
2776	NTV	Non-Tactical Vehicle
2777	NTY	(Internet Abbreviations:) Not Tested Yet; (Alternatively) No Thank You
2778	NTZ	Iraq-Saudi Arabia Neutral Zone (ISO 3166 trigram; obsolete 1993)
2779	NU	Nicaragua (FIPS 10-4 country code),Niue (ISO 3166 digram),Nunavut (postal symbol)
2780	NUL	Null character (ASCII code of control character),National Urban League
2781	NUTS	Nuclear Utilization Target Selection
2782	NUWC	U.S. Naval Undersea Warfare Center
2783	nV	Nanovolt
2784	NVEOL	Night Vision and Electro-Optics Laboratory
2785	NVESD	CERDEC Night Vision and Electronic Sensors Directorate,Fort Belvoir,Virginia
2786	NVG	Night Vision Goggles
2787	NVL	Night Vision Laboratory
2788	nW	Nanowatt
2789	NW	North-West
2790	NW	Nuclear Weapon
2791	NWA	National Wrestling Alliance
2792	NWF	National Wildlife Federation
2793	NWFZ	Nuclear-Weapon-Free Zone
2794	NWHN	U.S. National Women's Health Network
2795	nWo	New World Order (see article for explanation of idiosyncratic capitalization)
2796	NWOAHM	New Wave of American Heavy Metal
2797	NWOBHM	New Wave of British Heavy Metal (sometimes pronounced /n.ˈwɒbm/ as if it were an acronym)
2798	NWRA	National Wildlife Rehabilitators Association
2799	NWSL	National Women's Soccer League (U.S.)
2800	NWT	North-West Territories
2801	NXA	21st arcade game in the Pump It Up series
2802	NXD	Native XML
2803	NXE	New Xbox Experience
2804	NXG	New Cross Gate station
2805	NXL	National XBall League
2806	NXN	Nike Cross Nationals
2807	NY	New York (postal symbol)
2808	NYC	New York City
2809	NYT	New York Times
2810	NYHA	New York Heart Association
2811	NYO	National Youth Orchestra of Great Britain
2812	NYSE	New York Stock Exchange
2813	NZ	New Zealand (ISO 3166 and FIPS 10-4 country code digram)
2814	NZC	New Zealand Cricket
2815	NZL	New Zealand (ISO 3166 trigram)
2816	NzL	Noze looan (online/event listings)
2817	NZOSS	New Zealand Open Source Society
2818	NZRU	New Zealand Rugby Union
2819	OAC	On Approved Credit
2820	OAP	Old Age Pensioner (UK)
2821	OARSI	Osteoarthritis Research Society International
2822	OAS	Organization of American States
2823	OASIS	Ontario Agencies Supporting Individuals with Special Needs
2824	OASIS	Ontario Association of Sewage Industry Services
2825	OASP	Operational Analysis Support Paper/Plan
2826	OAU	Organization for African Unity
2827	OBE	Officer of the Order of the British Empire
2828	OBX	Outer Banks (North Carolina)
2829	OC	Officer Commanding
2830	OCD	Obsessive-Compulsive Disorder
2831	OCFS	Oracle Cluster File System
2832	OCFS2	Oracle Cluster File System Release 2
2833	OCMCC	[2] Orchard County MCC
2834	OCN	Oncology Certified Nurse
2835	OCO	Oort Cloud Object
2836	OCR	Optical Character Recognition
2837	OCS	see entry
2838	ODAS	OCA-DLR Asteroid Survey
2839	ODBC	Open DataBase Connectivity
2840	OEA	(U.S.) Office of Economic Adjustment
2841	OECD	Organisation for Economic Co-operation and Development (international)
2842	OED	Oxford English Dictionary
2843	OEG	Operation Exposure Guidance
2844	OEIS	On-Line Encyclopedia of Integer Sequences
2845	OEM	Original Equipment Manufacturer
2846	OFA	Occipital Face Area
2847	OFDA	U.S Agency for International Development's Office of Foreign Disaster Assistance
2848	OGC	Open Geospatial Consortium
2849	OGD	Other Government Department
2850	OGO	Other Government Organization
2851	OH	Ohio (postal symbol)
2852	OHC	OverHead-Cam engine
2853	OHHLA	Original Hip-Hop Lyrics Archive
2854	OHIP	Ontario Health Insurance Plan
2855	OHMS	On Her (or His) Majesty's Service (also written: O.H.M.S.)
2856	OHP	Observatoire de Haute-Provence
2857	OHSS	Ovarian Hyperstimulation Syndrome
2858	OIC	Officer In Charge
2859	OIF	Operation Iraqi Freedom
2860	OIOC	Oriental & India Office Collections (in the British Library)
2861	OJT	On-the-Job Training
2862	OKC	Oklahoma City
2863	OLED	Organic Light-Emitting Diode
2864	OLS	Operational Linescan System
2865	OMD	Orchestral Manoeuvres in the Dark (1980s pop group)
2866	OME	Osaka Mercantile Exchange
2867	OMFG	Oh My Fucking God
2868	OMG	Oh My God or Or My Gosh
2869	OMGW	Oh My Gosh it's Windy
2870	OMN	Oman (ISO 3166 trigram)
2871	OMNCS	U.S. Office of the Manager for the National Communications System
2872	OMP	Order of Mapungubwe in Platinum
2873	OMS	Order of Mapungubwe in Silver
2874	OMT	Object Model Template
2875	ON	Ontario (postal symbol)
2876	ONC	Orthopaedic Nurse Certified
2877	ONG	Orthodontic National Group
2878	ONI	(U.S.) Office of Naval Intelligence
2879	ONS	Operational Needs Statement
2880	OOAD	Object Oriented Analysis and Design
2881	OOBE	Out-of-body experience
2882	OOCL	Orient Overseas Container Line
2883	OODA	Observation,Orientation,Decision,Action loop (a.k.a. Boyd's Loop)
2884	OOF	Out of Facility
2885	OOMF	One Of My Followers
2886	OOO	Out Of the Office
2887	OOTW	Operations Other Than War
2888	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
2889	OPAC	Online Public Access Catalogue
2890	OPCON	Operational control
2891	OPCW	Organisation for the Prohibition of Chemical Weapons
2892	OPEC	Organization of the Petroleum Exporting Countries
2893	OPFOR	Opposing force
2894	OPINTEL	Operational Intelligence
2895	OPLAN	Operation plan (also OpPlan)
2896	OPORD	Operation order
2897	OPSEC	Operations security,Open Platform for Security
2898	OPSI	Overwhelming post splenectomy infection,UK Office of Public Sector Information
2899	OPTAR	Operational target
2900	OPV	Offshore Patrol Vessel
2901	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)
2902	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
2903	ORAU	Oak Ridge Associated Universities
2904	ORB	Object Request Broker
2905	ORBAT	Order of Battle
2906	ORD	Office of Research and Development,Operational Requirements Document
2907	ORF	Operational iness Float
2908	ORISE	Oak Ridge Institute for Science and Education
2909	ORNL	Oak Ridge National Laboratory
2910	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
2911	ORSA	Oxacillin-resistant Staphylococcus aureus,Operations Research Society of America
2912	OS	Operating System
2913	Os	Osmium
2914	OSA	Order of St. Augustine
2915	OSCE	Organisation for Security and Cooperation in Europe
2916	OSD	U.S. Office of the Secretary of Defense,On-screen Display
2917	OSDL	Open Source Development Labs
2918	OSE	Own Separate Entrance
2919	OSERS	U.S. Department of Education Office of Special Education and Rehabilitative Services
2920	OSETI	Optical SETI also Optical SETI
2921	OSHA	Occupational Safety and Health Administration
2922	OSI	Office of Strategic Influence,Ontario Swine Improvement,Open Source Initiative,Open Systems Interconnection
2923	OSIA	(U.S.) On-Site Inspection Agency
2924	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)
2925	OSL	Open Source License, Optically Stimulated Luminescence, Orbiting Solar Laboratory
2926	OSM	One Saturday Morning
2927	OSOTPBOIAS	One Sec,On The Phone,Be Off In A Sec
2928	OSPA	Operations Security Professional's Association site of OSPA
2929	OSPA	Oregon School Psychologists Association [3]
2930	OSRH	Oružane Snage Republike Hrvatske (en: Armed forces of the Republic of Croatia)
2931	OSS	Office of Strategic Services (1942-1945, forerunner of CIA)
2932	OSU	Ohio State University,Oklahoma State University
2933	OTA	Office of Technology Assessment, Orthodontic Technicians Association
2934	OTAC	Orthodontic Technicians Association Conference,Orthodontic Technicians Association Council
2935	OTC	Over-The-Counter (drugs)
2936	OTD	Off the derech (referring to an Orthodox Jew who has stopped practicing the tenets of his or her faith)
2937	OTEA	(U.S. Army) Operational Test Evaluation Agency
2938	OTI	Office of Transition Initiatives (United States Agency for International Development)
2939	OTOH	On The Other Hand
2940	OTS	Off the scale,sexually untouchable except for a lot of money
2941	OTSBH	Over The Shoulder Boulder Holder
2942	OTW	On The Way
2943	OTYBL	Over To You Blue Leader
2944	OTYRL	Over To You Red Leader
2945	OU	University of Oklahoma
2946	OW	Old Wykehamist
2947	OWN	Oprah Winfrey Network
2948	OX	IATA code for Orient Thai Airlines
2949	OXC	Optical cross-connect
2950	OXM	Official Xbox Magazine
2951	OXT	Oxytocin
2952	OZ	(?) Australia
2953	p	pico
2954	P2P	Peer-to-peer (networking)
2955	pA	picoampere
2956	PAA	Position Area for Artillery
2957	PABX	Private Automated Branch eXchange (company phone system)
2958	PACOM	(U.S.) Pacific Command
2959	PADI	Professional Association of Diving Instructors
2960	PAEK	PolyArylEtherKetone
2961	PAFC	Plymouth Argyle Football Club
2962	PAH	Polycyclic aromatic hydrocarbon
2963	PAHO	Pan American Health Organization
2964	PAK	Pakistan (ISO 3166 trigram)
2965	PAM	Precision Attack Missile
2966	PANS	Pretty Advanced/Awesome Network Services (cf. POTS)
2967	PARC	Palo Alto Research Center
2968	PAROS	Prevention of an Arms Race in Outer Space (treaty)
2969	PARP	(NATO Partnership for Peace) Planning And Review Process
2970	PARWIG	Power Augmented Ram Wing In Ground (aeroplane wing shape)
2971	PAS	See entry
2972	PASR	Personnel Accounting and Strength Reporting
2973	PATH	Port Authority Trans-Hudson
2974	PAYD	Pay As You Drive
2975	PAYE	Pay As You Earn
2976	Pb	Lead (Latin Plumbum)
2977	PB	PolyButylene
2978	PBB	PolyBrominated Biphenyl
2979	PBCK	Problem Between Chair and Keyboard (computer help desk in-joke)
2980	PBD	PolyButaDiene
2981	PBDE	PolyBrominated Diphenyl Ether
2982	PBI	PolyBenzImidazole
2983	PBN	PolyButylene Naphthalate
2984	PBOH	Please Become Old History
2985	PBT	PolyButylene Terephthalate
2986	PBX	Private Branch eXchange (company phone system)
2987	pC	picocoulomb
2988	PCAS	Planet-Crossing Asteroid Survey
2989	PCB	see entry
2990	PCCB	Porsche Ceramic Composite Brake
2991	PCCIP	President's Commission on Critical Infrastructure Protection
2992	PCE	PerChlorEthylene
2993	PCIe	Peripheral Component Interconnect Express (computer bus)
2994	PCL	Passive Coherent Location
2995	PCMCIA	Personal Computer Memory Card International Association (People Can't Memorise Computer-Industry Acronyms)
2996	PCN	Pitcairn Islands (ISO 3166 trigram)
2997	PCPI	Physician Consortium for Performance Improvement (AMA)
2998	PCR	Polymerase chain reaction
2999	PCSSD	Pulaski County Special School District
3000	PCZ	Panama Canal Zone (ISO 3166 trigram; obsolete 1980)
3001	Pd	Palladium
3002	PD	Product Director—Example: CERDEC Product Director C4ISR and Network Modernization
3003	PDL	Pure Dumb Luck (Texan punk band)
3004	PDN	Pull-Down Network
3005	PDRY	People's Democratic Republic of Yemen (obsolete since 1990)
3006	PDT	Pacific Daylight [Saving] Time (UTC-7 hours)
3007	PE	Professional Engineer
3008	PEBCAC	Problem Exists Between Chair and Computer (IT help desk in-joke)
3009	PEBKAC	Problem Exists Between Keyboard and Chair (ditto)
3010	PEEK	PolyEtherEtherKetone
3011	PEET	Partnerships for Enhancing Expertise in Taxonomy
3012	PEK	PolyEtherKetone
3013	PEPFAR	President's Emergency Plan For AIDS Relief
3014	PER	Peru (ISO 3166 trigram)
3015	perl	usually lower case Practical Extraction and Report Language
3016	PES	PolyEtherSulfone
3017	PEST	UK Public Engagement with Science and Technology
3018	PETE	PolyEthyleneTErephthalate
3019	PETP	PolyEthyleneTerePhthalate
3020	pF	picofarad
3021	PFD	Permanent Fund Dividend = personal flotation device
3022	PFE	Permanent Forest Estate
3023	PfP	Partnership for Peace
3024	Pg	petagram
3025	pg	picogram
3026	PGCE	Postgraduate Certificate in Education
3027	PGD	Pre-implantation Genetic Diagnosis
3028	PGENI	Pharmaco-Genetics for Every Nation Initiative
3029	PGH	Pre-implantation Genetic Haplotyping
3030	PGM	Precision-Guided Munition
3031	PGP	Pretty Good Privacy
3032	PHL	Philippines (ISO 3166 trigram)
3033	PHQ	Patient Health Questionnaire
3034	Pi	Pebi
3035	PIB	PolyIsoButylene
3036	PIC	Person In Charge
3037	PICNIC	Problem In Chair Not In Computer
3038	PICS	Private Investment Capital Subscription
3039	PIF	Partners in Flight
3040	PIG	Pipeline Inspection Gauge
3041	PIN	Personal Identification Number
3042	PINF	People In Need Foundation (Czech charitable organisation)
3043	PIPA	Program on International Policy Attitudes
3044	PIR	Priority Intelligence Requirement
3045	PIRA	Provisional Irish Republican Army
3046	PIREPS	Pilot Reports
3047	PITA	Pain In The Ass
3048	PJ	petajoule
3049	pJ	picojoule
3050	PJHQ	Permanent Joint Headquarters
3051	PKE	Partnership of Kindermusik Educators [1] &[2] & [2]
3052	PKI	Public Key Infrastructure (cryptography)
3053	PKU	Phenylketonuria
3054	pL	picolitre
3055	PLAID	Precision Location and Identification
3056	PLB	Personal Locator Beacon
3057	PLC	Public Limited Company (British)
3058	PLCC	Plastic Leaded Chip Carrier (electronics)
3059	PLD	Probable Line of Deployment
3060	PLEBS	People Lacking Everyday Basic Skills
3061	PLF	Parachute Landing Fall
3062	PLIF	Planar Laser-Induced Fluorescence
3063	PLL	Phase-Locked Loop (electronics)
3064	PLM	Polarized Light Microscope/Microscopy
3065	PLMBA	Phospholipid Bilayer Microarray
3066	Pln	Platoon
3067	PLO	Palestine Liberation Organization
3068	PLOKTA	Press Lots Of Keys To Abort
3069	PLP	Platonic Life Partner
3070	PLUTO	Pipe Line Under The Ocean
3071	PLW	Palau (ISO 3166 trigram)
3072	pm	picometre
3073	PMC	Primary Motor Cortex
3074	PMI	Positive Material Identification
3075	PMID	PubMed Identifier
3076	PMMA	PolyMethylMethAcrylate
3077	PMS	Premenstrual Syndrome
3078	PMSL	Piss Myself Laughing (Internet shorthand)
3079	PMT	Premenstrual Tension (UK) (see Premenstrual Syndrome)
3080	pN	piconewton
3081	PNAC	Project for the New American Century
3082	PNVS	Pilot Night Vision Sensor
3083	Po	Polonium
3084	PO	Post Office
3085	PO	Purchase Order
3086	POCD	Post-Operative Cognitive Dysfunction
3087	pod	Plain Old Documentation
3088	POFF	Plain Old Flat File
3089	POGO	Project On Government Oversight
3090	POI	Program Of Instruction
3091	POK	Plane Of Knowledge
3092	POLAD	Political Advice
3093	POMDP	Partially observable Markov decision process
3094	PooS	Poo Sniffer (Internet shorthand)
3095	POS- Point Of Sale terminal (retail industry transaction computers)	Piece Of S**t
3096	POSH	Port Outbound Starboard Home (alleged)
3097	POSSLQ	Person of the Opposite Sex Sharing Living Quarters
3098	POT	Plane Of Tranquility
3099	POTS	Plain Old Telephone Service (cf. PANS),Postural Orthostatic Tachycardia Syndrome
3100	POTUS	President of the United States
3101	POV	Point of view
3102	POW	Prisoner of war
3103	PPASC	(U.S.) Plans and Program Analysis Support Center
3104	PPCLI	Princess Patricia's Canadian Light Infantry (regiment)
3105	PPLI	Precise Participant Location & Identification
3106	PPM	Project Planning and Management
3107	PPO	PolyPhenylene Oxide
3108	PPQN	Pulses Per Quarter Note (ditto)
3109	PPQT	Pre-Production Qualification Test
3110	PPV	Pay-per-view
3111	Pr	Pastor, Priest
3112	PR	Public Relations
3113	Prb	Presbyter
3114	PRBO	Point Reyes Bird Observatory
3115	PRC	People's Republic of China
3116	PRD	CERDEC Product Realization Directorate
3117	PRFG	Partial Fog (METAR Code)
3118	PRI	Puerto Rico (ISO 3166 trigram)
3119	PRK	Democratic People's Republic of Korea (ISO 3166 trigram)
3120	PRM	Personnel iness Management
3121	PRY	Paraguay (ISO 3166 trigram)
3122	Ps	petasecond
3123	pS	picosiemens
3124	PSG	Pacific Seabird Group
3125	PSI	Portable Source Initiative
3126	PSI	Pounds per square inch
3127	PSS	Personnel System Support
3128	PST	Pacific Standard Time (UTC-8 hours)
3129	PSU	Pennsylvania State University
3130	PsyOp	Psychological Operations
3131	pT	picotesla
3132	Pt	Platinum
3133	PTA	Parent-Teacher Association
3134	PTAL	Public Transport Accessibility Level
3135	PTES	People's Trust for Endangered Species
3136	PTFE	PolyTetraFluoroEthylene
3137	PTI	Pardon the Interruption
3138	PTSD	Post-Traumatic Stress Disorder
3139	Pu	Plutonium
3140	Pub	Publication
3141	PUG	PET Users Group
3142	PUN	Pull-Up Network
3143	PUP	Pull-Up Point
3144	PUS	United States Miscellaneous Pacific Islands (ISO 3166 trigram; obsolete 1986)
3145	PV	petavolt
3146	pV	picovolt
3147	PvE	Player versus Environment
3148	PvP	Player versus Player
3149	PVR	Personal Video Recorder
3150	PvZ	Plants vs. Zombies
3151	PW	Palau (postal symbol; ISO 3166 digram)
3152	pW	picowatt
3153	PWA	Pirates With Attitude
3154	PWBA	Pension and Welfare Benefits Administration
3155	PWC	PieceWise Constant (describing a mathematical function)
3156	PwC	PricewaterhouseCoopers (international accounting firm)
3157	PWL	PieceWise Linear (describing a mathematical function)
3158	PWLC	PieceWise Linear and Concave/Convex (describing a mathematical function)
3159	PWR	Pressurized Water Reactor
3160	PX	Post eXchange
3161	PYF	French Polynesia (ISO 3166 trigram)
3162	PYMWYMI	Put Your Money Where Your Mouth Is
3163	Q1	First quarter of the year
3164	Q2	Second quarter of the year
3165	Q3	Third quarter of the year
3166	Q4	Fourth quarter of the year
3167	QA	Qatar (ISO 3166 digram)
3168	Qantas	Queensland And Northern Territory Aerial Services
3169	QAT	Qatar (ISO 3166 trigram)
3170	QB	Quarterback (football)
3171	QCD	Quantum ChromoDynamics
3172	QD	quaque die (Latin for 'daily')
3173	QDR	Quadrennial Defense Review
3174	QEH	Queen Elizabeth's Hospital
3175	QK	Air Canada Jazz (IATA airline designator)
3176	QNH	Regional mean sea level atmospheric pressure (aeronautical Q code)
3177	QPS	Quark Publishing System
3178	QS	quantum sufficit (Latin, 'as much as suffices')
3179	QSCAT	Quick Scatterometer satellite
3180	QSL	Québec Sign Language
3181	QSO	Quasi-Stellar Object
3182	Quango	(British Commonwealth) QUasi Autonomous Non-Governmental Organisation
3183	Quasar	Quasi-stellar radio source
3184	QUB	Queen's University Belfast
3185	QUIET	Q and U Imaging ExperimenT (Q and U are the Stokes parameters of the CMBR polarization)
3186	qv	quod vide (Latin, 'which see')
3187	QZ	Awair (IATA airline designator)
3188	R2I	Resistance to Interrogation
3189	RA	Radio Australia
3190	Ra	Radium
3191	RAAF	Royal Australian Air Force
3192	Rabobank	Raiffeisen-Boerenleenbank (from the two banks that merged to form the modern company)
3193	RACK	Risk Aware Consensual Kink (SM phrase)
3194	Racon	RAdar beaCON
3195	RADA	Royal Academy of Dramatic Art
3196	Radar	Radio Detection And Ranging
3197	RadB	Rad51/Dmc1 homologous protein
3198	RADb	Routing Assets Data Base
3199	RADC	Region Air Defence Commander
3200	RAE	UK Royal Aircraft Establishment (-1991)
3201	RAGBRAI	Register's Annual Great Bicycle Ride Across Iowa
3202	RAM	Royal Air Maroc
3203	Ramark	RAdar MARKer
3204	RAOC	Rear Area Operation Centre
3205	RARDE	UK Royal Armament Research and Development Establishment (1962-1991)
3206	RARE	Rapid Acquisition with Relaxation Enhancement (MRI technique)
3207	RATELO	Radiotelephone Operator
3208	Rb	Rubidium
3209	RB	Running Back (football)
3210	RBI	Runs Batted In
3211	RC	see entry
3212	RCAF	Royal Canadian Air Force
3213	RCC	Rescue Co-ordination Centre
3214	RCCO	Royal Canadian College of Organists
3215	RCHA	Royal Canadian Horse Artillery (regiment)
3216	RCMP	Royal Canadian Mounted Police
3217	RD	Radio Disney
3218	RDD	Radiological Dispersion Device
3219	RDM	Remotely Delivered/Deliverable Mine
3220	RDT	Remote Digital Terminal
3221	RDV	Remote Detection Vehicle
3222	Re	Rhenium
3223	RE	Royal Engineers
3224	REACT	Remote Electronically Activated Control Technology
3225	REAM	Retired Educators Association of Minnesota
3226	RECCE	Reconnaissance
3227	REEF	Reef Environmental Education Foundation
3228	REM	Rapid Eye Movement (sleep phase),Rosicrucian Egyptian Museum
3229	REME	Royal Electrical and Mechanical Engineers
3230	RERC	Rehabilitation Engineering Research Center
3231	RESNA	Rehabilitation Engineering and Assistive Technology Society of North America
3232	REU	Réunion (ISO 3166 trigram)
3233	Rf	Rutherfordium
3234	RFD	Request for Documentation
3235	RFE	Request for Evaluation
3236	RFEF	Real Federación Española de Fútbol (Spanish for Royal Spanish Football Federation)
3237	RFF	Right of First Refusal (legal term)
3238	RFID	Radio Frequency IDentification
3239	RFL	Rugby Football League
3240	RFP	Request for Proposal
3241	RFQ	Request for Quotation
3242	RFT	Request for Tender
3243	RFU	Rugby Football Union
3244	RG	Republican Guard
3245	Rg	Roentgenium
3246	RGB	Red Green Blue (colour model)
3247	RGBI	Red Green Blue Intensity (ditto)
3248	Rh	Rhodium
3249	RH	Southern Rhodesia (ISO 3166 digram; obsolete 1980)
3250	RHIC	Relativistic Heavy Ion Collider
3251	RHLI	Royal Hamilton Light Infantry (Canadian militia regiment)
3252	RHO	Southern Rhodesia (ISO 3166 trigram; obsolete 1980)
3253	RHU	Replacement Holding Unit
3254	RI	Rhode Island (postal symbol)
3255	RIAA	Recording Industry Association of America
3256	RIBA	Royal Institute of British Architects
3257	RIFA	Red imported fire ant
3258	RILA	Retail Industry Leaders Association
3259	RIMVS	Retinal Imaging Machine Vision System
3260	RINO	Republican In Name Only[1]
3261	RIP	Relief In Place,requiesca[n]t in pace (Latin for 'may he/she/they rest in peace')
3262	RISC	Reduced Instruction Set Computer
3263	RJD	Reduced Julian Day
3264	RKBA	Right to Keep and Bear Arms (Second Amendment to the United States Constitution)
3265	RKO	Radio-Keith-Orpheum Pictures
3266	RLP	Recognised [Operating/Operational] Land Picture
3267	RLS	Restless Leg Syndrome
3268	RLY	Rally Point
3269	RM	see separate disambiguation page
3270	RMC	Robert Menzies College
3271	RMDA	Records Management and Declassification Agency
3272	RMP	Recognised [Operating/Operational] Maritime Picture
3273	RN	Radio Netherlands
3274	Rn	Radon
3275	RNA	RiboNucleic Acid
3276	RNAD	Royal Naval Armaments Depot (UK)
3277	RNPS	Radio Network Planning System
3278	RNZ	Radio New Zealand
3279	RNZI	Radio New Zealand International
3280	ROA	Rate Of Ascent
3281	ROE	Rules Of Engagement
3282	ROFLOL	Rolling On the Floor Laughing Out Loud
3283	ROH	Ring of Honor
3284	ROK	Republic of Korea
3285	ROP	Render Output Pipeline
3286	ROPE	Research Opportunity and Performance Evidence
3287	ROS	Reactive Oxygen Species
3288	ROU	Romania (ISO 3166 trigram)
3289	ROV	Remotely Operated Vehicle
3290	ROZ	Restricted Operations Zone
3291	RPA	Regional Plan Association
3292	RPD	Recognition-Primed Decision-making
3293	RPF	Rwandan Patriotic Front
3294	RPL	Reverse Polish Lisp
3295	rpm	revolutions per minute
3296	RPN	reverse Polish notation
3297	rps	revolutions per second
3298	RPV	Remotely Piloted Vehicle
3299	RQ	Puerto Rico (FIPS 10-4 territory code)
3300	RRB	Railroad Retirement Board
3301	RRN	Recurrence Rate Number
3302	RRP	Recurrent Respiratory Papillomatosis
3303	RRS	Racing Rules of Sailing
3304	RRSP	Registered Retirement Savings Plan (Canada; roughly equivalent to the IRA in the U.S.)
3305	RS	Russia (FIPS 10-4 country code)
3306	RSI	Repetitive Strain Injury
3307	RSJ	Rolled Steel Joist (construction)
3308	RSN	Real Soon Now (coined by author Jerry Pournelle)
3309	RSPB	(UK) Royal Society for the Protection of Birds
3310	RSPCA	Royal Society for the Prevention of Cruelty to Animals
3311	RSR	Required Supply Rate
3312	RSRE	UK Royal Signals and Radar Establishment (1976-1991)
3313	RSRI	Red Sands Research Institute
3314	RTA	Road traffic accident (British)
3315	RTBF	Radio-Télévision belge de la Communauté française
3316	RTF	Rich Text Format
3317	RTFM	the Fucking/Fine Manual
3318	RTG	Radio-isotope Thermoelectric Generator also used for Rubber Tyred Gantry crane
3319	RTI	Run-Time Infrastructure (Simulation)
3320	RTL	see entry
3321	RTP	Real-time Transport Protocol
3322	RTS	see entry
3323	RTT	Round Trip Timing
3324	RU	Russia (ISO 3166 digram)
3325	Ru	Ruthenium
3326	RUC	Royal Ulster Constabulary
3327	RUS	Russia (ISO 3166 trigram)
3328	RUSI	Royal United Services Institute for Defence Studies
3329	RW	Rwanda (ISO 3166 and FIPS 10-4 country code digram)
3330	RWA	Rwanda (ISO 3166 trigram)
3331	RWH	Rain Water Harvesting
3332	RWR	Radar Warning Receiver
3333	RWS	Remote Weapon Station
3334	Rx	Medical prescription (possibly from Latin 'recipere','to take': see entry)
3335	RX	Receive
3336	SARS	Severe Acute Respiratory Syndrome
3337	SBNO	Standing but not operating (in reference to amusement parks)
3338	SCOTUS	Supreme Court of the United States
3339	SCROTUS	So-called Ruler of the United States
3340	SDHC	Secure Digital High Capacity
3341	SDXC	Secure Digital eXtended Capacity
3342	SG	Senegal (FIPS 10-4 country code), Singapore (ISO 3166 digram), Snow Grains (METAR Code), Study Group
3343	SGOTUS	Second Gentleman of the United States
3344	SHO	Showtime (see also sho.com)
3345	SIRI	Service Interface for Real Time Information
3346	Siri	Speech Interpretation and Recognition Interface (Apple iOS software)
3347	SLOTUS	Second Lady of the United States (the vice president's wife)
3348	SoCon	Southern Conference (U.S. college sports)
3349	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)
3350	SSD	South Sudan (ISO 3166 trigram)
3351	SSDC	U.S. Space and Strategic Defense Command
3352	STB	Surface Transportation Board[2]
3353	SWAC	Southwestern Athletic Conference
3354	SWAN	System for Wearable Audio Navigation
3355	SWAT	Special Weapons And Tactics
3356	SWF	Single White Female
3357	Ta	Tantalum
3358	TAACOM	U.S. Theater Army Area Command
3359	TAADCOORD	Theatre Army Air Defence Co-ordinator
3360	TAAR	Trace Amine-Associated Receptor
3361	TAC	U.S. Tactical Air Command (1946-1992)
3362	TACAN	Tactical Air Navigation
3363	TACCO	Tactical Coordinator
3364	TACCSF	U.S. Theater Aerospace Command & Control Simulation Facility
3365	TACDAR	Tactical Detection And Reporting
3366	TACSOP	Tactical SOP (Standing Operating Procedure)
3367	TADIL	Tactical Digital Information Link
3368	TAI	Target[ed] Area of Interest
3369	TAJ	Tom and Jerry
3370	TAJT	Tom and Jerry Tales
3371	TALES	Technical Advice and Lexicon for Enabling Simulation
3372	TANJ	There Ain't No Justice (used as expletive in the Ringworld novels)
3373	TANP	Terrain-Aware Network Planner
3374	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)
3375	TAPPS	Texas Association of Private and Parochial Schools
3376	TARDIS	Time And Relative Dimension In Space (from Doctor Who)
3377	TAS	Tasmania (postal symbol)
3378	TASER	Thomas A. Swift's Electric Rifle
3379	TASM	Tactical Air-to-Surface Missile
3380	TAT	Tourism Authority of Thailand
3381	TATP	TriAcetone TriPeroxide
3382	TATT	Tired All The Time (medical diagnosis in-joke)
3383	Tb	Terbium
3384	TB	Tuberculosis
3385	TBA	to be announced
3386	TBBPA	TetraBromoBisPhenol-A
3387	TBD	to be done, or: to be documented, or: to be determined, or: to be decided
3388	TBF	to be fair
3389	TBH	To Be Honest
3390	TBL	Turkish Basketball League
3391	TBS	Turner Broadcasting System
3392	TBT	Tributyltin
3393	Tc	Technetium
3394	TCAA	Top Counter-Assault Agents
3395	TCAS	Traffic Collision Avoidance System
3396	TCCCS	Tactical Command,Control and Communication System
3397	TCD	Chad (ISO 3166 trigram)
3398	TCHD	Truck Cargo Heavy Duty
3399	TCL	Tool Command Language
3400	TCM	Turner Classic Movies
3401	TCU	Texas Christian University
3402	TCW	Tasty Coma Wife
3403	TCWMS	Tele-Center Workforce Management System
3404	TDA	The Disney Afternoon
3405	TDL	Tactical Data Link
3406	TDM	Time-Division Multiplexing
3407	TDMA	Time Division Multiple Access
3408	TDP	Technology Demonstration Programme
3409	TDRS	Tracking Data and Relay Satellite
3410	Te	Tellurium
3411	TEAL	Tasman Empire Airways Limited
3412	Team	Together everyone achieves more
3413	TEAMS	The East African Marine System (fiber optic cable)
3414	TED	Technology Entertainment Design prize
3415	TENCAP	Tactical Exploitation of National Capabilities
3416	TERS	Tactical Event Reporting System
3417	TES	Tactical Event System
3418	TEST	Thesaurus of Engineering and Scientific Terms
3419	TEU	Twenty-foot equivalent unit (cargo capacity)
3420	TeVeS	Tensor Vector Scalar theory
3421	TFMPP	Trifluorophenylmethylpiperazine
3422	TFR	Total Fertility Rate
3423	TFT	Thin-Film Transistor
3424	Tg	Teragram
3425	TG	Togo (ISO 3166 digram)
3426	TGO	Togo (ISO 3166 trigram)
3427	Th	Thorium
3428	THA	Thailand (ISO 3166 trigram)
3429	THAAD	Terminal High Altitude Area Defence
3430	THEGENTRY	The High-End Group of Earth's New Technologies Research Yield
3431	THEL	Tactical High Energy Laser ACTD
3432	THG	Tetrahydrogestrinone
3433	TIA	Total Information Awareness initiative
3434	TIA	Transient Ischemic Attack
3435	TIALD	Thermal Imaging and Airborne Laser Designation
3436	TIBS	Tactical Information Broadcast System
3437	TIC	Troops In Contact
3438	TIGERS	Topologically Integrated Geographic Encoding and Referencing System
3439	TINC	There Is No Cabal
3440	TIP	Thermal Identification Panel
3441	tits	Toes in the Sand
3442	TJD	Truncated Julian Day
3443	TJK	Tajikistan (ISO 3166 trigram)
3444	TKL	Tokelau (ISO 3166 trigram)
3445	TKM	Turkmenistan (ISO 3166 trigram)
3446	Tl	Thallium
3447	TLA	Three-Letter Abbreviation/Acronym
3448	TLAM	Tomahawk Land Attack Missile
3449	TLATOJL	The Life and Times of Juniper Lee
3450	TLPM	T1 Line Performance Monitor
3451	Tm	Terametre
3452	TMAP	Texas Medication Algorithm Project
3453	TMC	The Movie Channel
3454	TMD	Theatre Missile Defence
3455	TMDK	The Mighty Don't Kneel (Australian professional wrestling stable also active in Japan)
3456	TMI	Too Much Information
3457	TMJ	TemporoMandibular Joint (syndrome)
3458	TMNT	Teenage Mutant Ninja Turtles
3459	TMPG	Transparent Multi-Platform Gateway
3460	TMR	Twin Main Rotors (helicopter type)
3461	TMS	Transcranial Magnetic Stimulation
3462	TMT	Thirty Meter Telescope
3463	TMTOWTDI	There's Than One Way To Do It (from Perl)
3464	TNA	Total Nonstop Action Wrestling
3465	TNO	Trans-Neptunian Object
3466	TOBS	Time of OBServation
3467	TOC	Table Of Contents, Tactical Operations Centre, Temporo-Occipital transition Cortex, Top of Concrete
3468	TOG	Togo (IOC and FIFA trigram,but not ISO 3166)
3469	TOGS	Thermal Observation Gunnery Sight
3470	TOMS	Total Ozone Mapping Spectrometer (satellite instrument)
3471	TON	Tonga (ISO 3166 trigram)
3472	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
3473	TOT	Time On Target
3474	TOW	Tube-launched,Optically tracked,Wire-guided (anti-tank missile)
3475	TP	East Timor (ISO 3166 digram; obsolete 2002),São Tomé and Príncipe (FIPS 10-4 country code),Training Practice,Trident Ploughshares
3476	TPE	Chinese Taipei (IOC and FIFA trigram for the country also known as Taiwan)
3477	TPI	The point is
3478	TPO	Thrombopoietin
3479	TPS	The Pennington School
3480	TPTB	The Powers That Be (often used to refer to the people responsible for the content of TV series or movies)
3481	TQ	Top Qualifier (similar to Pole Position in car racing)
3482	TRA	Technology iness Assessment
3483	TRAC	(U.S. Army) TRADOC Analysis Center
3484	TRACON	Terminal Radar Approach Control
3485	TRADOC	(U.S. Army) Training and Doctrine Command
3486	TRANSCOM	U.S. Transportation Command
3487	TRAP	Tactical Receive equipment and related Applications
3488	TRASANA	TRADOC Systems Analysis Agency
3489	TRD	Towed Radar Decoy
3490	TRIGAT	Third Generation Antitank (missile)
3491	TRL	Technology readiness level
3492	Trp	Troop
3493	TRU	Transuranic
3494	TRUEX	Training in Urban Environment Exercise
3495	TRW	Thompson Ramo Wooldridge Inc.
3496	Ts	Terasecond
3497	TS	Terasiemens,Thunderstorm (METAR code),Tunisia (FIPS 10-4 country code),TinySex,Transsexual, Tough Sh*t
3498	TSA	Theatre Storage Area,Time Slot Allocation,Transportation Security Administration,The Salvation Army
3499	TSEC	Transmission Security Encryption Code
3500	TSL	Transportation Security Laboratory
3501	TSN	The Sporting News (historic name of the periodical now known as Sporting News),The Sports Network
3502	TSO	The Stationery Office (was HMSO until 1996),(U.S.) TRICARE Support Office,Trans-Siberian Orchestra (band)
3503	TSOP	Tactical Standing Operation Procedure,The Sound of Philadelphia (classic 1970s R&B instrumental)
3504	TSR	Terminate and Stay Resident
3505	TSSIA	The Subject Says It All
3506	TT	Teratesla,Terrestrial Time,Tourist Trophy (Motorcycle sport),Trinidad and Tobago (ISO 3166 digram)
3507	TTCT	Torrance Tests of Creative Thinking
3508	TTFN	Ta Ta For Now
3509	TTL	Tax,Title,License,Through-the-lens (photography),Time 'till live,Time to live,Transistor-transistor logic
3510	TTO	Trinidad and Tobago (ISO 3166 trigram)
3511	TTP	Tactics,Techniques,and Procedures,Thrombotic thrombocytopenic purpura,Trailer Transfer Point
3512	TTTEAF	Thomas the Tank Engine and Friends
3513	TTY	TeleTYpewriter (Printer)
3514	TTYL	To You Later (Internet slang)
3515	TTZ	Tetrazolium
3516	TU	Technische Universität (German for 'Technical University'),Thammasat University (Thailand),Turkey (FIPS 10-4 country code)
3517	TUC	Trades Union Congress
3518	TUG	TeX Users Group
3519	TUI	Text-based user interface (cf. CLI),among other uses
3520	TUM	Technische Universität München (Germany)
3521	TUN	Tunisia (ISO 3166 trigram)
3522	TUNS	Technical University of Nova Scotia
3523	TUR	Turkey (ISO 3166 trigram)
3524	TUSK	Tank Urban Survival Kit
3525	TUV	Tuvalu (ISO 3166 trigram)
3526	TV	Television,Teravolt,Transvestite,Tuvalu (ISO 3166 and FIPS 10-4 country code digram)
3527	Tv	Time value,a designation seen on some camera dials for shutter priority mode
3528	TVA	Tennessee Valley Authority
3529	TVG	Television Games (Network),Tick,Very Good,Often used by School Teachers when marking homework etc. (Tick VG)[1][2]
3530	TVR	TreVor (Wilkinson) Racing
3531	TVS	Tornado vortex signature
3532	TW	Republic of China (Taiwan) (ISO 3166 and FIPS 10-4 country code digram),Terawatt
3533	TWAIN	Technology Without An Interesting Name
3534	TWE	Trans World Entertainment
3535	TWI	The Welding Institute
3536	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
3537	TWN	Republic of China (Taiwan) (ISO 3166 trigram)
3538	TWP	Technical Working Paper
3539	TWS	Thermal Weapon Sight,Track While Scan
3540	TX	Texas (postal symbol),Transmit,Turkmenistan (FIPS 10-4 country code)
3541	TXV	Thermostatic Expansion Valve
3542	TYT	Take Your Time,Internet chat abbreviation
3543	TZ	Tanzania (ISO 3166 and FIPS 10-4 country code digram)
3544	TZA	Tanzania (ISO 3166 trigram)
3545	TZC	Tetrazolium chloride
3546	U	Uranium
3547	UA	Unit of Action
3548	UAAP	University Athletic Association of the Philippines
3549	UAB	University of Alabama at Birmingham
3550	UAP	Unidentified Areal Phenomana
3551	UAV	Unmanned Aerial Vehicle,Unprotected Anal and Vaginal sex,UB[edit]
3552	UBC	United Baptist Church,University of British Columbia
3553	UBI	Universal Basic Income
3554	UBIGEO	Ubicación Geografica (Spanish for Geographical Location)
3555	UBS	Unbundled Bitstream Services,United Bank of Switzerland,United Banque Suisse
3556	UCBSA	United Cricket Board of South Africa
3557	UCF	University of Central Florida
3558	UCLA	University of California at Los Angeles
3559	UCLES	University of Cambridge Local Examinations Syndicate
3560	UCR	University of California at Riverside
3561	UCR	University of Costa Rica
3562	UCS	Union of Concerned Scientists
3563	UCSB	University of California at Santa Barbara
3564	UCSD	University of California at San Diego
3565	UDAS	Uppsala-DLR Asteroid Survey
3566	UDDI	Universal Description,Discovery and Integration
3567	UDTS	Uppsala-DLR Trojan Survey
3568	UE	Unit of Employment
3569	UEFA	Union of European Football Associations
3570	UESAC	Uppsala-ESO Survey of Asteroids and Comets
3571	UFC	Ultimate Fighting Championship
3572	UFO	Unidentified Flying Object, or: United Farmers of Ontario
3573	UGV	Unmanned Ground Vehicle
3574	UHF	Ultra High Frequency
3575	UHMW	Ultra-High Molecular Weight
3576	UHRB	Ultra-High Resolution Building (simulation)
3577	UIC	University of Illinois at Chicago
3578	UID	User ID
3579	UIUC	University of Illinois at Urbana-Champaign
3580	UJTL	Universal Joint Task List
3581	UKIP	United Kingdom Independence Party
3582	UKR	Ukraine (ISO 3166 trigram)
3583	UL	Underwriters Laboratories
3584	ULF	Ultra Low Frequency
3585	UM	U.S. Minor Outlying Islands (postal symbol; ISO 3166 digram)
3586	UMCP	Unit Maintenance Collection Point
3587	UMES	University of Maryland Eastern Shore
3588	UMI	U.S. Minor Outlying Islands (ISO 3166 trigram)
3589	UMIST	University of Manchester Institute of Science and Technology
3590	UMTS	Universal Mobile Telecommunications System
3591	UN	United Nations
3592	UNABOM	University and airline bomber (FBI case name)
3593	UNAIDS	Joint United Nations Programme on HIV/AIDS
3594	UNAMSIL	United Nations Mission in Sierra Leone
3595	UNCF	United Negro College Fund
3596	UNCLOS	United Nations Convention on the Law of the Sea
3597	UNCSGN	United Nations Conference on the Standardization of Geographical Names
3598	UNCTAD	United Nations Conference on Trade and Development
3599	UNDCP	United Nations Drug Control Programme
3600	UNDE	Union of National Defence Employees (Canada)
3601	UNDP	United Nations Development Programme
3602	UNEP	United Nations Environment Programme
3603	UNFCCC	United Nations Framework Convention on Climate Change
3604	UNFICYP	United Nations Peacekeeping Force in Cyprus
3605	UNGEGN	United Nations Group of Experts on Geographical Names
3606	UNHCR	United Nations High Commission (er) for Refugees
3607	UNICEF	United Nations Children's Fund (originally the United Nations International Children's Emergency Fund)
3608	UNICRI	United Nations Interregional Crime and Justice Research Institute
3609	UNIDO	United Nations Industrial Development Organization
3610	UNIFEM	United Nations Development Fund for Women (from the French Fonds de développement des Nations unies pour la femme)
3611	UNLV	University of Nevada,Las Vegas
3612	UNMIK	United Nations Interim Administration Mission in Kosovo
3613	UNOSOM	United Nations Operations in Somalia
3614	UNPROFOR	United Nations Protection Force (in former Yugoslavia)
3615	UNRISD	United Nations Research Institute for Social Development
3616	UNSM	Union of Nova Scotian Municipalities
3617	UNTAC	United Nations Transitional Authority in Cambodia
3618	UNTAET	United Nations Transitional Administration in East Timor
3619	UNU	United Nations University
3620	UPdM	Università Popolare della Multimedialità
3621	UPF	Universitat Pompeu Fabra (Catalan for: 'Pompeu Fabra University')
3622	UPI	United Press International
3623	UPN	United Paramount Network
3624	UPU	Universal Postal Union
3625	UR	Soviet Union (NATO country code,obsolete 1992)
3626	URBSFA	Union royale belge des sociétés de football association (French for Royal Belgian Football Association)
3627	URD	User Requirements Document
3628	URI	University of Rhode Island
3629	URU	Uruguay (IOC and FIFA trigram, but not ISO 3166)
3630	URY	Uruguay (ISO 3166 trigram)
3631	US	United States (also ISO 3166 and FIPS 10-4 country code digram)
3632	USA	United States of America (also ISO 3166 trigram), United States Army
3633	USAADAC	U.S. Army Air Defense Artillery Center,Fort Bliss,Texas
3634	USAARMC	U.S. Army ARMor Center,Fort Knox,Kentucky
3635	USAAVNC	U.S. Army AViatioN Center,Fort Rucker,Alabama
3636	USAFSPC	U.S. Air Force Space Command
3637	USAIC	U.S. Army Infantry Center,U.S. Army Intelligence Center
3638	USAID	United States Agency for International Development
3639	USAP	Union Sportive des Arlequins Perpignanais,United States Antarctic Program
3640	USAPATRIOT	Uniting and Strengthening America by Providing Appropriate Tools Required to Intercept and Obstruct Terrorism
3641	USAREUR	United States Army Europe
3642	USB	Universal Serial Bus
3643	USC	United States Code,University of South Carolina,University of Southern California
3644	USCG	United States Coast Guard
3645	USCINCSPACE	United States Commander in Chief,Space Command
3646	USDA	United States Department of Agriculture
3647	USDI	United States Department of the Interior
3648	USDOE	United States Department of Energy
3649	USDRE	(U.S.) Under-Secretary of Defense for Research and Engineering (1978-1986)
3650	USEC	United States Enrichment Corporation
3651	USFL	United States Football League
3652	USFWS	United States Fish and Wildlife Service
3653	USGS	United States Geological Survey
3654	USIA	United States Information Agency
3655	USJFCOM	United States Joint Forces Command
3656	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
3657	USMC	United States Marine Corps
3658	USMNT	United States men's national (soccer) team
3659	USN	United States Navy
3660	USNA	United States National Arboretum,United States Naval Academy
3661	USNB	United States Naval Base
3662	USNG	United States National Grid
3663	USNH	United States Naval Hospital
3664	USNI	United States Naval Institute
3665	USNO	U.S. Naval Observatory
3666	USNOFS	United States Naval Observatory Flagstaff Station
3667	USNP	United States Newspaper Program
3668	USNR	United States Navy Reserve
3669	USNS	United States Naval Ship
3670	USNY	University of the State of New York (usually pronounced 'use-knee')
3671	USNZ	University Sport New Zealand
3672	USPS	United States Postal Service
3673	USPTO	United States Patent and Trademark Office
3674	USR	User
3675	USS	United States ship (sometimes meaningless; see Star Trek)
3676	USSPACECOM	United States Space Command
3677	USSR	Union of Soviet Socialist Republics
3678	UST	Underground Storage Tank
3679	USTRANSCOM	United States Transportation Command
3680	USWNT	United States women's national (soccer) team
3681	UT	Universal Time
3682	UTEP	University of Texas at El Paso (pronounced you-tep)
3683	UTM	Universal Transverse Mercator (geographical co-ordinate system)
3684	UUA	Unitarian Universalist Association
3685	UUID	Universally Unique Identifier (see also GUID)
3686	UUV	Unmanned Underwater Vehicle
3687	UW	University of Washington
3688	UWO	University of Western Ontario
3689	UWT	Under Water Telephone
3690	UWTG	Under Water Tug
3691	UWW	United World Wrestling
3692	UXO	Unexploded Ordnance
3693	UY	Uruguay (ISO 3166 and FIPS 10-4 country code digram)
3694	UZ	Uzbekistan (ISO 3166 and FIPS 10-4 country code digram)
3695	UZB	Uzbekistan (ISO 3166 trigram)
3696	VACIS	Vehicle And Container Inspection System
3697	VACIS	Victorian Ambulance Clinical Information System
3698	VANOS	Variable Nockenwelle System
3699	VAO	Vienna Art Orchestra
3700	VAT	Vatican City-State (ISO 3166 trigram)
3701	VBA	Visual Basic for Applications
3702	vCJD	Variant Creutzfeldt-Jakob Disease
3703	VCNO	(U.S.) Vice Chief of Naval Operations
3704	VCofS	Vice Chief of Staff
3705	VCR	Video cassette recorder
3706	VCT	Saint Vincent and the Grenadines (ISO 3166 trigram)
3707	VDFS	VisualSVN Distributed File System (VDFS)
3708	VE	Venezuela (ISO 3166 digram)
3709	VEEGA	Venus Earth Earth Gravity Assist manœuvre
3710	VEN	Venezuela (ISO 3166 trigram)
3711	VERITAS	Very Energetic Radiation Imaging Telescope Array System
3712	VfD	s for deletion (used in Wikipedia)
3713	VFM	Value For Money
3714	VFMO	Very Fast Moving Object (astronomy)
3715	VFT	Virtual Function Table
3716	VFW	Veterans of Foreign Wars
3717	VG	British Virgin Islands (ISO 3166 digram)
3718	VGB	British Virgin Islands (ISO 3166 trigram)
3719	VH1	Video Hits One
3720	VHF	Very High Frequency
3721	VIA	Versatile Interface Adapter
3722	VIDS	Visual Information Display System
3723	VII	7 (in Roman numerals)
3724	VIII	8 (in Roman numerals)
3725	VIN	Vehicle Identification Number (ISO 3779)
3726	VIP	Very Important Person
3727	VISCII	VIetnamese Standard Code for Information Interchange
3728	VIT	Vellore Institute of Technology
3729	VIVO	Video In Video Out
3730	VJ	Video Jockey
3731	VLAD	Vertical Line Array DIFAR
3732	VLBA	Very Long Baseline Array
3733	VLF	Very Low Frequency
3734	VLIW	Very Long Instruction Word
3735	VLPFC	VentroLateral PreFrontal Cortex
3736	VLPMC	VentroLateral PreMotor Cortex
3737	VLSI	Very-large-scale integration
3738	VM	Vietnam (FIPS 10-4 country code)
3739	VMF	Marine Fighting Squadron of the United States Marine Corps
3740	VMF	Variable Message Format
3741	VMN	VentroMedial Nucleus (neurophysiology)
3742	VN	Vietnam (ISO 3166 digram)
3743	VNIR	Visible and Near InfraRed
3744	VNM	Vietnam (ISO 3166 trigram)
3745	VNS	see entry
3746	VOA	Voice of America
3747	VOIP	Voice Over Internet Protocol
3748	VOLT	Visual OpenType Layout Tool
3749	VON	Victorian Order of Nurses
3750	VOR	Voice of Russia
3751	VOX	Voice Operated oscillator
3752	VPOTUS	Vice President of the United States
3753	VR	Virtual Reality
3754	VRSG	Virtual Reality Scene Generator
3755	VSAT	Very Small Aperture Terminal ('vee-satt')
3756	VSHORAD	Very Short Range Air Defence
3757	VSO	Voluntary Services Overseas
3758	VSR	Very Special Relativity
3759	VTC	Video Tele-Conference
3760	VTEC	Variable valve Timing and Electronic lift Control
3761	VU	Vanuatu (ISO 3166 digram), Vedanta University
3762	VUB	Vrije Universiteit Brussel (Belgian university)
3763	VUT	Vanuatu (ISO 3166 trigram)
3764	VV	Via Voice,Village Voice
3765	VVAF	Vietnam Veterans of America Foundation
3766	VW	Volkswagen
3767	VZ	Verizon Communications (NYSE code)
3768	W	Tungsten (from German Wolfram),Watt,West
3769	W3C	World Wide Web Consortium
3770	WA	Namibia (from West Africa),Washington state (postal symbol),Western Australia (postal symbol),World Archery (Federation)
3771	WAAC	Women's Army Auxiliary Corps (Britain) (World War I UK)
3772	WAAF	Women's Auxiliary Air Force (World War II UK)
3773	WAC	Western Athletic Conference,Women's Auxiliary Corps (World War II Canada),Women's Army Corps (World War II U.S.)
3774	WACC	Weighted Average Cost of Capital (accounting)
3775	WACS	What-A-Cartoon! Show
3776	WAD	Weapons Alert Designator
3777	WAGGGS	World Association of Girl Guides and Girl Scouts
3778	WAGs	Wives And Girlfriends (most notably of England national football team players at the 2006 FIFA World Cup,although the term existed earlier)
3779	WAL	see entry
3780	WAPIMA	What a pain in my ass
3781	WAR	With All Respect
3782	WAsP	Short form of WAAAAP (Wind Atlas Analysis and Application Program)
3783	WAYP	White And Yellow Pages
3784	WB	Warner Bros.,Welcome Back (Internet shorthand)
3785	Wb	Weber
3786	WBA	Warner Bros. Animation,West Bromwich Albion (F.C.),World Boxing Association
3787	WBC	World Boxing Council
3788	WBE	Work Breakdown Element
3789	WBO	World Boxing Organization
3790	WC	Water Closet,Winston Churchill,World Cup (sports)
3791	WCBO	World Chess Boxing Organisation
3792	WCBP	World Center for Birds of Prey
3793	WCL	World Confederation of Labour
3794	WCS	Weapon Control Status,Wildlife Conservation Society
3795	WCW	World Championship Wrestling
3796	WDC	Western Design Center,World Data Center
3797	WDIN	Wildlife Disease Information Node
3798	WDWR	Walt Disney World Resort
3799	WEBS	Weapon Effectiveness Battle Simulation
3800	WEC	World Extreme Cagefighting
3801	WEEE	Waste Electrical and Electronic Equipment
3802	WEF	World Economic Forum
3803	WEM	West Edmonton Mall
3804	WEU	Western European Union
3805	WEZ	Weapon Engagement Zone
3806	WF	Wallis and Futuna Islands (ISO 3166 digram)
3807	WFC	Women's Forage Corps (World War II UK)
3808	WFD	Weapon of Focused Destruction
3809	WFF	Wallops Flight Facility
3810	WFI	Water for Injection
3811	WFH	Working from home
3812	WFP	World Food Program
3813	WFZ	Weapons Free Zone
3814	WH	Wehrmacht Heer (German World War II army vehicle licence plate code)
3815	WHAM	Wisconsin Hydrogen-Alpha Mapping (telescope)
3816	WHI	Women's Health Initiative
3817	WHIP	Walks plus hits per inning pitched
3818	WHO	World Health Organisation
3819	WHS	(U.S.) Washington Headquarters Services
3820	WI	Western Sahara (FIPS 10-4 country code),Wisconsin (postal symbol),Women's Institute
3821	WIA	Wounded In Action,Wireless Institute of Australia (Amateur Radio)
3822	WIIFM	What's in it for me?
3823	WIMP	Weakly Interacting Massive Particle, Windows,Icons,Menus,Pointers
3824	WIP	Work In Progress
3825	WIPO	World Intellectual Property Organization
3826	WIPP	[Nuclear] Waste Isolation Pilot Plant
3827	WIYN	Wisconsin Indiana Yale NOAO telescope consortium
3828	WK	Wake Island (ISO 3166 digram,obsolete 1986)
3829	WKYP	Will Keep You Posted
3830	WL	Wehrmacht Luftwaffe (German World War II air force vehicle licence plate code)
3831	WLB	Women's Land Brigade (World War II Canada)
3832	WLF	Wallis and Futuna Islands (ISO 3166 trigram)
3833	WLOG	Without Loss Of Generality (see WOLOG)
3834	WM	Wehrmacht Marine (German World War II navy vehicle licence plate code)
3835	WMANUS	West Midlands Area National Union of Students
3836	WMD	World Movement for Democracy
3837	WMI	Wildlife Management Institute
3838	WMO	World Meteorological Organization
3839	WNA	World Nuclear Association
3840	WNF	Will Not Fix
3841	WNIT	Women's National Invitation Tournament
3842	WNSD	What's New,Scooby-Doo?
3843	WNW	West North-West
3844	WO	Warrant Officer
3845	WOF	Width of Fabric
3846	WOFT	Waste Of Fucking Time
3847	WOFTAM	Waste Of Fucking Time And Money
3848	WOI	Wheels Of Italy
3849	WOM	Write Only Memory
3850	WOS	Wilson Ornithological Society
3851	WOSM	World Organization of the Scout Movement, Worldwide Oil Spill Model
3852	WOT	Waste Of Time
3853	WP	White Phosphorus (ammunition)
3854	WPB	War Production Board during World War II
3855	WPE	World Pork Expo
3856	WPK	Wider Peacekeeping
3857	WPT	World Poker Tour,World Premiere Toons
3858	WR	Wide Receiver (football)
3859	WRAC	Women's Royal Army Corps (World War II UK)
3860	WRAIR	Walter Reed Army Institute of Research
3861	WRBWWRM	We Best What We Most
3862	WRC	World Rally Championship
3863	WRC	World Religions Conference
3864	WRNG	Warning
3865	WRS	Worldwide Reference System
3866	WRT	With respect to (especially in fields such as Mathematics)
3867	WRT	NHS Workforce Review Team
3868	WRT	The Linksys routers whose model name start with 'WRT'
3869	WRT	Third party firmware for the Linksys WRT routers and compatible models from other vendors.
3870	WRT	Wallace Roberts & Todd,LLC (Urban Planning and Design)
3871	WRT	Web Runtime (WRT) is a portable application framework developed by Nokia that allows the creation of widgets on the S60 Platform.
3872	WRT	Wholesale,Trade,Retail sector,category in employment and economics statistics
3873	WRT	Wireless Receiver/Transmitter (computer networks/IT)
3874	WRT	Wireless Ronin Technologies (digital signage)
3875	WRT	World Rally Team
3876	WRT	Writer Response Theory
3877	WRVS	Women's Royal Voluntary Service,now only known by the acronym (UK)
3878	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)
3879	WSC	Weapon System Catalogue
3880	WSDL	Web Services Description Language
3881	WSJ	(The) Wall Street Journal
3882	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)
3883	WSROC	Western Sydney Regional Organisation of Councils
3884	WSSM	Winchester Super Short Magnum (family of rifle cartridges)
3885	WSTC	Women Signallers Territorial Corps (World War II UK)
3886	WSW	West South-West
3887	WTB	Wales Tourism Board,Warenterminbörse Hannover
3888	WTC	World Trade Center
3889	WTF	What the fuck?; also What a Terrible Failure (android)
3890	WTFH	What The Fucking Hell
3891	WTH	What the Hell
3892	WTO	World Trade Organization
3893	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)
3894	WUBU2	What you been up to
3895	WUU2	What you up to (Internet slang popular with teenagers)
3896	WV	West Virginia (postal symbol)
3897	WVA	World Veterinary Association
3898	WVIAC	West Virginia Intercollegiate Athletic Conference
3899	WVR	Women's Volunteer Reserve (World War II UK)
3900	WVSC	Women's Volunteer Service Corps (World War II Canada)
3901	WVU	West Virginia University
3902	WW	see entry
3903	WWE	World Wrestling Entertainment
3904	WWI	World War I
3905	WWII	World War II
3906	WWIII	World War III
3907	WWJD	What would Jesus do?
3908	WWS	Wheaton Warrenville South High School
3909	WWWF	World Wide Wrestling Federation
3910	WXO	Weather [Executive] Officer
3911	WY	Wyoming (postal symbol)
3912	WZ	Swaziland (FIPS 10-4 country code)
3913	XBML	eXtended Business Modelling Language
3914	XC	Ninety (in Roman numerals)
3915	XCBL	XML Common Business Library
3916	XD	Used in chatrooms or email for smiley face. X is the eyes; squinted D is the mouth; XD.
3917	Xe	Xenon
3918	XFA	XML Forms Architecture
3919	XFC	Xtreme Fighting Championships
3920	XFD	Fighter aircraft made by Douglas
3921	Xfe	X File Explorer
3922	XFF	X-Forwarded-For
3923	XFG	Exfoliation glaucoma
3924	XFR	Automobile made by Jaguar
3925	XFT	X FreeType interface library
3926	XG	Automobile made by Hyundai
3927	XGA	Extended Graphics Array
3928	XGP	Extreme Game Player
3929	XHTML	eXtensible Hypertext Markup Language
3930	XI	Eleven (in Roman numerals)
3931	XII	Twelve (in Roman numerals)
3932	XIII	Thirteen (in Roman numerals)
3933	XIV	Fourteen (in Roman numerals)
3934	XIX	Nineteen (in Roman numerals)
3935	XJS	Automobile made by Jaguar
3936	XKB	X keyboard extension
3937	XKE	Automobile made by Jaguar
3938	XKR	Automobile made by Jaguar
3939	XML	eXtensible Markup Language
3940	XMSF	eXtensible Modelling and Simulation Framework
3941	XNA	X-No-Archive,Xeno Nucleic Acid
3942	XNC	X Northern Captain
3943	XNU	X is Not Unix
3944	XP	eXperience Point (role-playing games)
3945	XQJ	XQuery API for Java™
3946	XRAY	X-Ray
3947	XRML	eXtensible Rights Markup Language
3948	XS	Xiaolin Showdown
3949	XSL	eXtensible Style Language
3950	XTMH	eXtreme Technology Multiprocessor Hyperlanguage
3951	XUL	XML User Interface Language
3952	XV	Fifteen (in Roman numerals)
3953	XVI	Sixteen (in Roman numerals)
3954	XVII	Seventeen (in Roman numerals)
3955	XVIII	Eighteen (in Roman numerals)
3956	XWF	Xcitement Wrestling Federation
3957	XX	Twenty (in Roman numerals)
3958	Xyl	Xylobium
3959	XZN	Triple square screw driver
3960	y	Yocto-
3961	Y2K	Year Two Thousand
3962	yA	Yoctoampere
3963	Ya	Yottayear
3964	YaBPr	Yet another Brother Pat rant
3965	YABSLAG	Yet another boy singing like a girl
3966	YAC	Youth-Adult Committee
3967	YAFLA	Yet Another Five Letter Abbreviation
3968	YAP	Young Aspiring Professional
3969	YB	Youcef Benzouada (Southern Algerian name)
3970	Yb	Ytterbium
3971	yC	Yoctocoulomb
3972	YC	Yottacoulomb
3973	YDS	Yosemite Decimal System (climbing)
3974	YE	Yemen (ISO 3166 digram)
3975	YEM	Yemen (ISO 3166 trigram)
3976	yF	Yoctofarad
3977	YF	Yottafarad
3978	yg	Yoctogram
3979	Yg	Yottagram
3980	YGCO	Yamaneko Group of Comet Observers
3981	Ygo	Yu-Gi-Oh!
3982	yH	Yoctohenry
3983	YH	Yottahenry
3984	YHBT	You Have Been Trolled
3985	YHII	You Have It Inside
3986	YHS	Ya Hoor sur!
3987	Yi	Yobi
3988	Yippie	Youth International Party + suffix
3989	yJ	Yoctojoule
3990	YJ	Yottajoule
3991	yK	Yoctokelvin
3992	YK	Yottakelvin
3993	YKYFCW	You know you're from Christchurch when (post-earthquake joke)
3994	yL	Yoctolitre
3995	YL	Yottalitre
3996	ym	Yoctometre
3997	Ym	Yottametre
3998	YMMD	You Make My Day
3999	yN	Yoctonewton
4000	YN	Yottanewton
4001	YOLO	You Only Live Once
4002	YPA	Yards per Pass Attempt (football statistic)
4003	YPIO	Your Problem Is Obvious
4004	YPO	Young Presidents' Organization
4005	ys	Yoctosecond
4006	yS	Yoctosiemens
4007	Ys	Yottasecond
4008	YS	Yottasiemens
4009	YSI	Young Scots for Independence
4010	yT	Yoctotesla
4011	YTD	Year-To-Date
4012	YTM	Yield to Maturity
4013	YTS	Youth Training Scheme
4014	YTT	Yoshi Topsy-Turvy
4015	Yuppie	Young Urban Professional + suffix
4016	yV	Yoctovolt
4017	YV	Yottavolt
4018	yW	Yoctowatt
4019	YW	Yottawatt
4020	YYH	YuYu Hakusho
4021	z	Zepto
4022	Z	Zetta
4023	zA	Zeptoampere
4024	ZAF	South Africa (ISO 3166 trigram)
4025	ZAMS	Zero age main sequence
4026	ZAS	Zylinder Abschaltung System
4027	ZBT	Zero-Balance Transfer (accounting)
4028	zC	Zeptocoulomb
4029	ZC	Zettacoulomb
4030	ZCM	(n) ZENworks Configuration Management
4031	ZCMK	Zone Control Master Key
4032	ZCU	Zimbabwe Cricket Union
4033	\a	Atto-