# AR
## Translingual

| 🜇 | U+1F707, &#128775; ALCHEMICAL SYMBOL FOR AQUA REGIA-2 |
| ← 🜆 [U+1F706] | Alchemical Symbols | 🜈 → [U+1F708] |

### Symbol

AR
* (international standards) ISO 3166-1 alpha-2 country code for Argentina.
    Synonym: ARG (alpha-3)
* (alchemy, archaic) Abbreviation of aqua regia.
    Synonym: 🜆
* (alchemy, archaic) Abbreviation of balneum arenae (“sand bath”).
* (alchemy, archaic) Abbreviation of lapis armenus (“Armenian stone”).

## English
### Adjective

AR (not comparable)
* (statistics) Initialism of autoregressive.

### Noun

AR (countable and uncountable, plural ARs)
* (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
* (countable, weaponry, informal) An assault rifle or automatic rifle.
* (uncountable or plural only, accounting) Initialism of accounts receivable.
* (philately, post) Initialism of acknowledgment of receipt.
* (pornography) Initialism of age regression.
    Coordinate term: AP
* (fandom slang) Initialism of alternate reality.
* (countable, sports, US) Initialism of American record, national record for the United States.
* 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.
* (biochemistry) Initialism of androgen receptor.
* (sports, countable) Initialism of area record, best achievement among those by persons from a given continent.
* (crime) Initialism of armed robbery.
* (emergency medicine) Initialism of artificial respiration.
* (countable) Initialism of aspect ratio.
* (law, politics) Initialism of assembly resolution.
    Coordinate terms: AB, HB, HR, SB, SR
* (meteorology) Initialism of atmospheric river.
* (uncountable, computing) Initialism of augmented reality.
    Coordinate terms: RR, VR

### Proper noun

AR
* Postal abbreviation of Arkansas
    Synonym: (standard abbreviation) Ark.
* Abbreviation of Arunachal Pradesh, a state of India

### See also

* AR pupil

### Anagrams

* 'RA, 'Ra, ra, RA, Ra

## German
### Pronunciation

* Audio:(file)

### Proper noun

AR
* ISO 3166-2:CH code of Appenzell Ausserrhoden (canton)

## Portuguese
### Proper noun

AR
* (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: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:

### Further reading

* “AR” in Dicionário infopédia da Língua Portuguesa.

## Romanian
### Proper noun

AR
* Abbreviation of Arad, a county in Romania.