AP

AP

1. (international standards) Indeterminately reserved ISO 3166-1 alpha-2 country code for the African Regional Industrial Property Organization.

This is an indeterminately reserved code, included as part of ISO 3166-1 on the request of the World Intellectual Property Organization due to its use in the WIPO ST.3 standard, and is not endorsed for general use by the ISO.

AP (not comparable)

1. Initialism of all-purpose.
2. Initialism of alternately placed.
3. (medicine) Initialism of anteroposterior.

   Coordinate term: PA

   • 2016, B.J. Manaster, “Osteochondroma”, in B.J. Manaster, editor, Diagnostic Imaging: Musculoskeletal: Non-Traumatic Disease, 2nd edition, Philadelphia, PA: Elsevier, →ISBN, page 250:

     AP radiograph shows an exophytic type of exostosis. [image caption]

4. (military) Initialism of anti-personnel.

   Coordinate terms: AT, HE

5. (military) Initialism of armor-piercing.

AP (countable and uncountable, plural APs)

1. (countable, US, education) An Advanced Placement program.

   Coordinate term: IB

2. (countable) An Audemars Piguet watch.
   • 2018-19, Roddy Rich, Ballin' (song):

     I put her in a new AP

   • 2020, Megan Thee Stallion, Savage (song):

     I keep my niggas private, so his AP all I'm showing

3. (countable, computing) Initialism of access point.
4. (uncountable, accounting) Initialism of accounts payable.
5. (uncountable, organic chemistry) Initialism of acetylpyrroline.
6. (countable, video games) Initialism of action point.
7. (countable, grammar) Initialism of adjective phrase or adverbial phrase.
8. (countable, gambling) Initialism of advantage player.
9. (uncountable, pharmacology) Initialism of aerosolized pentamidine.
   • 1989 April 22, Chris Bull, “Medicare Planning To Cut Funding For AIDS Drugs”, in Gay Community News, page 1:

     He pointed out that the annual cost of AP prophylaxis is $2100, and that a single hospitalization for pneumocystis carinii pneumonia (PCP) costs six times that amount. (AP is generally regarded as an effective preventive for PCP)

10. (countable) Initialism of affair partner.
11. (uncountable, cooking) Abbreviation of all-purpose flour.
13. (uncountable, paraphilia) Initialism of age progression.

    Antonym: AR

14. (uncountable, US) Initialism of American plan.
15. (uncountable) Initialism of attachment parenting.
16. (countable) Initialism of authorized participant.
17. (countable, banking) Initialism of automatic payment.
18. (US, military) Abbreviation of Auxiliary Provisions (a naval transport).
19. (uncountable, chemistry, astronautics) Initialism of ammonium perchlorate.
20. (uncountable, medicine) Initialism of acute pancreatitis.

AP

1. Initialism of ActivityPub.
2. (US, education) Initialism of Advanced Placement.

   Coordinate term: IB

   • 2010, Jennifer Egan, “Ask Me if I Care”, in A Visit from the Goon Squad:

     Joel is AP everything and he's applied to Harvard, so I guess his dad isn't taking any chances.

3. (journalism) Initialism of Associated Press.
   • 2025 September 26 (last accessed), “AP STYLE: GENERAL RULES”, in Kennesaw State University‎^[1], archived from the original on 26 September 2025, page 2:

     Always consult the official Associated Press Stylebook for other AP questions and guidelines. The KSU Writing Center has current AP books available for use, as well as Writing Assistants to help you with AP format.

4. (US, military) Initialism of Armed Forces – Pacific.
   • 2010 October 29, Bill Shrum, “Shipping to soldiers for the holidays”, in Stuttgart (Arkansas) Daily Leader:

     APO/FPO AP ZIPs 962-966 — Space Available Mail, Nov. 26; Parcel Airlift Mail, Dec. 3; Priority Mail, Dec. 10; First Class Mail Letters and Cards, Dec. 10 and Express Mail Military Service, Dec. 18.

5. Numerous places:
   1. Abbreviation of Amapá: a state of Brazil.
   2. Initialism of Andhra Pradesh: a state of India.
   3. Abbreviation of Arabian Plate: a tectonic plate.

• PA, Pa, Pa., p.a., pa

AP

1. (Internet slang) initialism of alkuperäinen postaaja (“original poster; OP”)

• -pa

AP ?

1. Apples CH (Swiss commune)
2. Awyer

• PA

• IPA^(key): /ˈa.pe/, [ˈa.pe]

AP

1. initialism of Angkasa Pura (literally “sky city”)

AP

1. initialism of akademi perikanan
2. initialism of artikel pilihan
3. initialism of ahli peneliti
4. (education, government) initialism of ahli pertama
5. (finance) initialism of akuntan publik
6. (government, management) initialism of administrasi pemerintahan

AP m

1. abbreviation of Amapá: a state of Brazil

AP f

1. (Spanish politics, historical) initialism of Alianza Popular, a Spanish political party (1977–1989).

AP (Baybayin spelling ᜁᜌ᜔ ᜉᜒ)

1. (education) initialism of araling panlipunan (“social studies”)

• pa-, pa

AP

1. (media) initialism of Associated Press
2. (politics, dated) initialism of Adalet Partisi