PowerShell/Data/Abbr/general.csv

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