AR

🜇 U+1F707, 🜇 ALCHEMICAL SYMBOL FOR AQUA REGIA-2 ← 🜆 [U+1F706] Alchemical Symbols 🜈 → [U+1F708]

AR

1. (international standards) ISO 3166-1 alpha-2 country code for Argentina.

   Synonym: ARG (alpha-3)

2. (alchemy, archaic) Abbreviation of aqua regia.

   Synonym: 🜆

3. (alchemy, archaic) Abbreviation of balneum arenae (“sand bath”).
4. (alchemy, archaic) Abbreviation of lapis armenus (“Armenian stone”).

AR (not comparable)

1. (statistics) Initialism of autoregressive.

AR (countable and uncountable, plural ARs)

1. (countable, weaponry) An AR-15 personal semi-automatic rifle, M-16 assault rifle, M-4 carbine, derivative or related gun; the Armalite AR family and derivatives.

   Coordinate term: AK

2. (countable, weaponry, informal) An assault rifle or automatic rifle.
3. (uncountable or plural only, accounting) Initialism of accounts receivable.
4. (philately, post) Initialism of acknowledgment of receipt.
6. (pornography) Initialism of age regression.

   Coordinate term: AP

7. (fandom slang) Initialism of alternate reality.
8. (countable, sports, US) Initialism of American record, national record for the United States.
9. Initialism of administrative rule and administrative regulation.
   • 1984 August 18, Karen J. Cox, “Women In Cages”, in Gay Community News, volume 12, number 6, page 7:

     As I was going over the AR book for my status change, I read several other ARs I believed the institution was violating so I decided to ask about them at the meeting.

10. (biochemistry) Initialism of androgen receptor.
11. (sports, countable) Initialism of area record, best achievement among those by persons from a given continent.
12. (crime) Initialism of armed robbery.
13. (emergency medicine) Initialism of artificial respiration.
14. (countable) Initialism of aspect ratio.
15. (law, politics) Initialism of assembly resolution.

    Coordinate terms: AB, HB, HR, SB, SR

16. (meteorology) Initialism of atmospheric river.
17. (uncountable, computing) Initialism of augmented reality.

    Coordinate terms: RR, VR

AR

1. Postal abbreviation of Arkansas

   Synonym: (standard abbreviation) Ark.

2. Abbreviation of Arunachal Pradesh, a state of India

• AR pupil

• 'RA, 'Ra, ra, RA, Ra

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AR

1. ISO 3166-2:CH code of Appenzell Ausserrhoden (canton)

AR

1. (Portugal) Initialism of Assembleia da República (“Assembly of the Republic”).
   • 2022 February 6, Paulo Portas, “Chega quer vice-presidente na AR. Como está a extrema-direita nos outros países da UE?”, in CNN Portugal‎^[1]:

     Foi uma das primeiras polémicas a sair das eleições legislativas: o Chega quer um lugar na vice-presidência da Assembleia da República - ao qual tem, tradicionalmente, direito, por ter sido a terceira força política mais votada - mas a esquerda ameaça vetar a proposta. Em Global, Paulo Portas explicou o que se passa noutros países europeus.

     (please add an English translation of this quotation)

   • 2022 February 11, Lusa, “BE quer explicações na AR de entidades envolvidas no processo eleitoral da emigração”, in SAPO‎^[2]:

• “AR” in Dicionário infopédia da Língua Portuguesa.

AR

1. Abbreviation of Arad, a county in Romania.