| 項目 |
| A |
| Å［angstrom］ |
| A 海域［sea area A］ |
| A 型 |
| A 株 |
| A 規約 |
| A クラス［A class］ |
| A 判 |
| a［atto］ |
| a. |
| a［acceleration］ |
| ＠［at］ |
| AA1［affirmative action］ |
| AA2［Alcoholics Anonymous］ |
| AA3［American Airlines］ |
| AA4［Asia Africa］ |
| AA 会議［Asian-African Conference］ |
| AA グループ［Asian-African group］ |
| AAA1（トリプルエー） |
| AAA, 3A2 |
| AAA3［Agricultural Adjustment Administration］ |
| AAA4［American Arbitration Association］ |
| AAA5［American Automobile Association］ |
| AAA6［Asia-Africa Latin America］ |
| AAAI（トリプルエーアイ）［American Association for Artificial Intelligence］ |
| AAAS（トリプルエーエス）［American Association for the Advancement of Science］ |
| AACE［Association of Advocators for Consumers Everyday-life］ |
| AAF［American Advertising Federation］ |
| AAIAL［American Academy and Institute of Arts and Letters］ |
| AALA1（アーラ）［Asia, Africa, Latin America］ |
| AALA2［Asian-African Latin-American People's Conference］ |
| AAM［air-to-air missile］ |
| AAMA［American Automobile Manufacturers Association］ |
| A & R［assembly and repair］ |
| AAPC［Asia-African Peoples' Conference］ |
| AAR［against all risks］ |
| AAR［Association to Aid Refugees］ |
| AARP［American Association of Retired Persons］ |
| AATC［automatic air traffic control］ |
| AB |
| ABA1［abscisic acid］ |
| ABA2［American Bankers Association］ |
| ABA3［American Bar Association］ |
| ABAC［APEC Business Advisory Council］ |
| ABC1 |
| ABC2［ABC World Airways Guide］ |
| ABC3［activity-based costing］ |
| ABC4［American Broadcasting Company］ |
| ABC5［Audit Bureau of Circulations］ |
| ABC 火災 |
| ABC 兵器［atomic, biological and chemical weapons］ |
| ABCC［Atomic Bomb Casualties Commission］ |
| ABCD ライン［ABCD-Line］ |
| ABF［Asia Boxing Federation］ |
| Abilimpic［(和) ability＋Olympic］ |
| ABM［antiballistic missile］ |
| ABO 式血液型［ABO system; ABO blood group］ |
| ABPI［Association of the British Pharmaceutical Industry］ |
| ABS1［American Bureau of Shipping］ |
| ABS2［antilock-brake system］ |
| ABS3［Army Broadcasting Service］ |
| ABS4［asset-backed securities］ |
| ABS 樹脂［acrylonitrile butadiene styrene resin］ |
| ABS 洗剤［alkylbenzen sulfonate］ |
| ABSDF［All Burma Students' Democratic Front］ |
| ABU［Asian-Pacific Broadcasting Union］ |
| ABWR［advanced boiling water reactor］ |
| AC1［adaptive control］ |
| AC2［adult children］ |
| AC3［Advertising Council］ |
| AC4［alternating current］ |
| A.C.［(ラ) ante Christum］ |
| Ac［actinium］ |
| ac.［acre］ |
| a/c［account］ |
| ACAP（エーキャップ）［Association of Consumer Affairs Professionals］ |
| ACAS［airborne collision avoidance system］ |
| ACC1［All Japan Radio TV Commercial Council］ |
| ACC2［Arab Cooperation Council］ |
| ACC3［area control center］ |
| ACCS［Association of Copyright for Computer Software］ |
| ACCU［Asian Culture Center of UNESCO］ |
| ACDA［Arms Control and Disarmament Agency］ |
| AC/DC［alternating currentdirect current］ |
| ACE［angiotensin-converting enzyme］ |
| ACE Japan［Japan Association for Cultural Exchange］ |
| ACL［allowable cabin load］ |
| ACLU［American Civil Liberties Union］ |
| ACM1［advanced composite material］ |
| ACM2［Arab Common Market］ |
| ACM3［Association for Computing Machinery］ |
| ACP 諸国［African, Caribbean and Pacific Countries］ |
| ACPC［Association of Coffee Producing Countries］ |
| ACPF［Asia Crime Prevention Foundation］ |
| ACPI［advanced configuration and power interface］ |
| ACR［automatic career routing］ |
| ACRR［American Council on Race Relations］ |
| ACRS［Advisory Committee on Reactor Safeguards］ |
| ACS［Association of Caribbean States; (ス) la Asociacion de Estados del Caribe］ |
| ACSA［acquisition and cross-servicing agreement］ |
| ACT1［Action for Children's Television］ |
| ACT2［active control technology］ |
| ACT3（アクト）［American College Test］ |
| ACT4［automatically controlled transportation system］ |
| ACTH（アクス）［adrenocorticotrophic hormone］ |
| ACU1［arithmetic and control unit］ |
| ACU2［Asian Clearing Union］ |
| ACU3［automatic calling unit］ |
| ACV［air-cushion vehicle］ |
| AD1［analog-to-digital］ |
| AD2［art director］ |
| AD3［assistant director］ |
| AD4［automatic depositor］ |
| AD5［Principality of Andorra］ |
| A.D.［(ラ) anno Domini］ |
| AD 変換器［analog-to-digital converter］ |
| AD 法［anti-dumping law］ |
| ad（アド）［advertisement］ |
| ADA1（エイダ） |
| ADA2［adenosine deaminase］ |
| ADA3［Americans with Disabilities Act］ |
| ADAMS（アダムス）［TV-Asahi Data And Multimedia Service］ |
| ADB1［African Development Bank］ |
| ADB2［Asian Development Bank］ |
| ADC1［Air Defense Command］ |
| ADC2［analog-to-digital converter］ |
| ADEOS（アデオス）［Advanced Earth Observing Satellite］ |
| ADF1［African Development Fund］ |
| ADF2［Air Defense Force］ |
| ADF3［Asian Development Fund］ |
| ADF4［automatic direction finder］ |
| ADH［antidiuretic hormone］ |
| ADI［acceptable daily intake］ |
| ADIZ［air defense identification zone］ |
| ADL1［activity of daily living］ |
| ADL2［Adelaide］ |
| ad lib［(ラ) ad libitum］ |
| Adm., ADM［admiral］ |
| ADMD［Association for Dignified Mental Death］ |
| ADP1［adenosine diphosphate］ |
| ADP2［automatic data processing］ |
| ADPCM［adaptive differential pulse code modulation］ |
| ADR［American Depositary Receipt］ |
| ADR 機関［alternative dispute resolution facilities］ |
| ADSL［asymmetric digital subscriber line］ |
| AE1［account executive］ |
| AE2［automatic exposure］ |
| AE3［United Arab Emirates］ |
| AE 剤［air entraining agent］ |
| AEA1［Association of Educational support for Asia］ |
| AEA2［Atomic Energy Authority］ |
| AEC1［African Economic Community］ |
| AEC2［Atomic Energy Commission of Japan］ |
| AEF［African Education Fund international］ |
| AEI［American Enterprise Institute for Public Policy Research］ |
| AESJ［Atomic Energy Society of Japan］ |
| AET［Assistant English Teacher］ |
| AF1［Air Force］ |
| AF2［Air France］ |
| AF3［aramid fiber］ |
| AF4［auto-focus］ |
| AF5［Islamic State of Afghanistan］ |
| AF2 |
| AFC1［airfuel ratio control］ |
| AFC2［American Football Conference］ |
| AFC3［Asian Football Confederation］ |
| AFC4［automatic flight control］ |
| AFC5［automatic frequency control］ |
| AFC6［automatic fuel control］ |
| AFCS［automatic flight control system］ |
| AFDB［African Development Bank］ |
| AFDC［Aid to Families with Dependent Children］ |
| AFG［Islamic State of Afghanistan］ |
| AFI［American Film Institute］ |
| AFL-CIO［American Federation of Labor and Congress of Industrial Organizations］ |
| AFM［atomic force microscope］ |
| A.F.P.［(フ) Agence France-Presse］ |
| AFRTS［Armed Forces Radio and Television Service］ |
| AFS［American Field Service］ |
| AFSC［American Friends Service Committee］ |
| AFTA（アフタ）［ASEAN Free Trade Area］ |
| AFWJ［Association of Foreign Wives of Japanese］ |
| AG1［(ド) Aktiengesellschaft］ |
| AG2［Antigua and Barbuda］ |
| AG3［Attorney General］ |
| Ag［(ラ) argentum］ |
| AGIL 図式 |
| AGP［accelerated graphics port］ |
| AGS［American Geographical Society］ |
| AGT［automated guideway transit］ |
| AGV［automatic （automated）guided vehicle］ |
| Ah［ampere-hour］ |
| AHA［American Hockey Association］ |
| AHC［acute hemorrhagic conjunctivitis］ |
| AHO［Netherlands Antilles］ |
| AHRC［Asian Human Rights Commission］ |
| AHT［animal health technician］ |
| AI1［Air India］ |
| AI2［Amnesty International］ |
| AI3［Anguilla］ |
| AI4［artificial insemination］ |
| AI5［artificial intelligence］ |
| AIA［American Institute of Architects］ |
| A.I.B.A.［(フ) Association internationale de boxe amateur］ |
| AIBD［Association of International Bond Dealers］ |
| AICO［ASEAN Industrial Cooperation］ |
| AID1［Agency for International Development］ |
| AID2［artificial insemination by donor］ |
| AIDA（アイダ）の法則［attention, interest, desire, action］ |
| AIDCA（アイドカ）の法則 |
| AIDMA（アイドマ）の法則 |
| AIDS（エイズ）［acquired immunodeficiency syndrome］ |
| AIESEC（アイセック）［(フ) Association internationale des etudiants en sciences economiques et commerciales］ |
| .aiff［Apple interchange file format］ |
| AIH［artificial insemination by husband］ |
| AIM1［Alternative Investment Market］ |
| AIM2［American Indian Movement］ |
| AIM3［Association of International Marathons and Roadraces］ |
| AIPAC［American Israel Public Affairs Committee］ |
| A.I.P.H.［(フ) Association internationale des producteurs de l'horticulture］ |
| AIQ 制［automatic import quota system］ |
| AJJF［All Japan Judo Federation］ |
| AJKF［All Japan Kendo Federation］ |
| AKL［Auckland］ |
| AL1［American League］ |
| AL2［American Legion］ |
| AL3［artificial life］ |
| AL4［Republic of Albania］ |
| Al［aluminium; aluminum］ |
| ALA1［Alliance for Labor Action］ |
| ALA2［American Library Association］ |
| ALADI［(ス) Asociacion Latinoamericana de Integracion］ |
| ALB［Republic of Albania］ |
| ALBM［air-launched ballistic missile］ |
| ALC［autoclaved lightweight concrete］ |
| ALE［atomic layer epitaxy］ |
| ALFLEX（アルフレックス）［Automatic Landing Flight Experiment］ |
| ALG［Democratic and People's Republic of Algeria］ |
| ALGOL（アルゴル）［algorithmic language］ |
| ALM［assets and liabilities management］ |
| ALOTS［airborne light-weight optical tracking system］ |
| ALS1［amyotrophic lateral sclerosis］ |
| ALS2［antilymphocyte serum］ |
| ALS3［automatic landing system］ |
| ALU［arithmetic and logic unit］ |
| AM1［amplitude modulation］ |
| AM2［Republic of Armenia］ |
| A.M., a.m.［(ラ) ante meridiem］ |
| AM ステレオ［amplitude modulation stereo］ |
| AM 放送［amplitude modulation broadcasting］ |
| Am［americium］ |
| AMA1［American Management Association］ |
| AMA2［American Marketing Association］ |
| AMA3［American Medical Association］ |
| AMDA（アムダ）［Association of Medical Doctors of Asia］ |
| AMeDAS（アメダス）［Automated Meteorological Data Acquisition System］ |
| AMEI［Association of Musical Electronics Industry］ |
| AMEX, Amex1（アメックス）［American Express Card］ |
| AMEX, Amex2（アメックス）［American Stock Exchange; American Exchange］ |
| AMF［Asian Multimedia Forum］ |
| amp.［ampere］ |
| AMS1［aggregate measurement of support］ |
| AMS2［Amsterdam］ |
| Amtrak（アムトラック）［American Track］ |
| AMU1［Arab Maghreb Union］ |
| AMU2［Asian Monetary Unit］ |
| AN［Netherlands Antilles］ |
| ANA1［All Nippon Airways］ |
| ANA2［American Nurses' Association］ |
| ANA3［antinuclear antibody］ |
| ANC1［African National Congress］ |
| ANC2［Anchorage］ |
| AND［Principality of Andorra］ |
| &（アンパサンド）［ampersand］ |
| AND 回路［AND circuit］ |
| ANFO（アンホ）［ammonium nitrate fuel oil］ |
| ANG［Republic of Angola］ |
| ANGEL（エンジェル）［Advanced Number Guide system by Electronic computer］ |
| ANK 文字［alphabet, numeric, kana character］ |
| ANOC［Association of National Olympic Congress］ |
| ANPA［American Newspaper Publishers Association］ |
| ANS［Asian News Service］ |
| ANSA（アンサ）［(イ) Agenzia Nazionale Stampa Associata］ |
| ANSER（アンサー）［Automatic Answer Network System for Electronic Request］ |
| ANSI（アンシ）［American National Standards Institute］ |
| ANSP（アンスプ）［Agency for National Security and Planning］ |
| ANT［Antigua and Barbuda］ |
| ANZAC（アンザック）［Australian and New Zealand Army Corps］ |
| Anzac（アンザック）デー［Anzac Day］ |
| ANZCERTA［Australia-New Zealand Closer Economic Relationship Treaty Agreement］ |
| ANZUS（アンザス）［Australia, New Zealand and the United States Treaty］ |
| AO［Republic of Angola］ |
| AOC［Association of Olympic Committees］ |
| AOR［adult-oriented rock］ |
| AOSIS［Alliance of Small Island nations］ |
| AP1［access point］ |
| AP2［advise and pay］ |
| AP3［American Plan］ |
| AP4［application program］ |
| AP5［Associated Press］ |
| APA1［advance pricing agreement］ |
| APA2［Army Procurement Agency of Japan］ |
| APC1［aspirin, phenacetin, caffeine］ |
| APC2［automatic pallet changer］ |
| APD［avalanche photodiode］ |
| APEC（エーペック）［Asia-Pacific Economic Cooperation］ |
| APERC［Asia Pacific Energy Research Center］ |
| APEX［Advance Purchase Excursion Fares］ |
| API1［American Petroleum Institute］ |
| API2［application program interface］ |
| A.P.I.［(フ) alphabet phonetique international］ |
| API 度［API's Baume degree］ |
| APL［A Programming Language］ |
| APO［Asian Productivity Organization］ |
| APRA（アプラ）［(ス) Alianza Popular Revolucionaria Americana］ |
| APS1［Advanced Photo System］ |
| APS2［American Protestant Society］ |
| APT1［Asia Pacific Telecommunity］ |
| APT2［automatic picture transmission］ |
| APT3［automatically programmed tool］ |
| APWR［advanced pressurized water reactor］ |
| AQ［achievement quotient］ |
| AR1［Argentine Republic］ |
| AR2［artificial reality］ |
| AR モデル［autoregressive model］ |
| Ar［argon］ |
| ARAMCO（アラムコ）［Arabian-American Oil Company］ |
| ARC［AIDS related complex］ |
| .arc［archive］ |
| ARF［ASEAN Regional Forum］ |
| ARG［Argentine Republic］ |
| ARIMA モデル［autoregressive integrated moving average model］ |
| ARM1［Abortion Rights Mobilization］ |
| ARM2［Republic of Armenia］ |
| ARMA モデル［autoregressive moving average model］ |
| ARN［Arlanda］ |
| ARP［address resolution protocol］ |
| ARPA（アルパ，アーパ）［Advanced Research Projects Agency］ |
| ARPANET（アーパネット，アルパネット）［Advanced Research Projects Agency Computer Network］ |
| ARRC［ACE Rapid Reaction Corps］ |
| ARTS-J（アーツ-ジェイ）［automated radar terminal system-Japan］ |
| ARU1［Aruba］ |
| ARU2［audio response unit］ |
| AS［American Samoa］ |
| AS 洗剤［alkyl sulfate detergent］ |
| As［arsenic］ |
| ASA1［American Samoa］ |
| ASA2（アーサ，アサ）［American Standards Association］ |
| ASA3［American Statistical Association］ |
| ASA 感度 |
| ASAT（エーサット）［antisatellite］ |
| ASBM［air-to-surface ballistic missile］ |
| ASCA1（アスカ）［advisory specialist for consumer's affairs］ |
| ASCA2［Asian Students Cultural Association］ |
| ASCA3［Association for Science Cooperation in Asia］ |
| ASCAP（アスキャップ）［American Society of Composers, Authors and Publishers］ |
| ASCII（アスキー）［American Standard Code for Information Interchange］ |
| ASCOJA（アスコジャ）［ASEAN Council of Japan Alumni］ |
| ASDE（アスデ）［airport surface detecting equipment］ |
| ASE［American Stock Exchange］ |
| ASEAN（アセアン）［Association of Southeast Asian Nations］ |
| ASEAN 10［Association of Southeast Asian Nations 10］ |
| ASEM［Asia-Europe Meeting］ |
| ASET［Association of Super advanced Electronics Technology］ |
| ASIC（エーシック）［application specific integrated circuit］ |
| ASM［air-to-surface missile］ |
| .asm［assembler］ |
| ASNE［American Society of Newspaper Editors］ |
| ASP［American Selling Price］ |
| ASPCA［American Society for the Prevention of Cruelty to Animals］ |
| ASQ［American Society for Quality］ |
| ASR［airport surveillance radar］ |
| ASROC（アスロック）［antisubmarine rocket］ |
| ASV［advanced safety vehicle］ |
| AT1［achievement test］ |
| AT2［alternative technology］ |
| AT3［appropriate technology］ |
| AT4［auditory trainer］ |
| AT5［automatic transmission］ |
| AT6［Republic of Austria］ |
| At［astatine］ |
| AT3［antithrombin III］ |
| AT & T［American Telephone and Telegraph Company］ |
| ATB［all-terrain bike］ |
| ATC1［air traffic control］ |
| ATC2［Asia and Pacific Trade Center］ |
| ATC3［automatic tool changer］ |
| ATC4［automatic train control］ |
| ATF［Bureau of Alcohol,Tobacco and Firearms］ |
| ATG［Art Theater Guild］ |
| ATH［Athinai］ |
| ATIS（アティス）［Advanced Traffic Information Service］ |
| ATL1［adult T cell leukemia］ |
| ATL2［Atlanta］ |
| ATM1［anti-tank missile］ |
| ATM2［asynchronous transfer mode］ |
| ATM3［automated teller machine］ |
| ATM 交換システム［asynchronous transfer mode switching system］ |
| atm［standard atmosphere］ |
| ATO［automatic train operation］ |
| ATP1［adenosine triphosphate］ |
| ATP2［Association of Tennis Professionals］ |
| ATR1［Advanced Telecommunications Research Institute International］ |
| ATR2［advanced thermal reactor］ |
| ATRAC［adaptive transform acoustic coding］ |
| ATS［automatic train stop］ |
| ATT［American Telephone and Telegraph Company］ |
| ATV［all-terrain vehicle］ |
| AU1［astronomical unit］ |
| AU2［Australia］ |
| A.U.［angstrom unit］ |
| Au［(ラ) aurum］ |
| .au［audio］ |
| AUH［Abu Dhabi］ |
| AUP［acceptable use policy］ |
| AUS［Australia］ |
| AUT［Republic of Austria］ |
| AV1［(和) adult＋video］ |
| AV, A.V.2［audio-visual］オーディオビジュアル。「視聴覚」の意。 |
| AV, A.V.3［Authorized Version］ |
| AV 機器［audio-visual］ |
| Ave.［avenue］ |
| .avi［audio visual interleaved］ |
| AVM システム［automatic vehicle monitoring system］ |
| AW［Aruba］ |
| AWACS（エーワックス）［airborne warning and control system］ |
| AWC［Association of the Wildlife Conservation］ |
| AWK［Aho, Weinberger, Kernighan］ |
| .awk［Aho, Weinberger, Kernighan］ |
| AY［Finnair］ |
| AZ1［Alitalia］ |
| AZ2［Azerbaidjan Republic］ |
| AZE［Azerbaidjan Republic］ |
| AZT［azidothymidine］ |