AR

See also: Appendix:Variations of "ar"

Translingual

Symbol

AR

1. The ISO 3166-1 two-letter (alpha-2) code for Argentina.

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English

Adjective

AR (not comparable)

1. (statistics) Initialism of autoregressive.

Noun

AR (countable and uncountable, plural ARs)

1. (countable) an AR-15 personal semi-automatic rifle, M-16 assault rifle, M-4 carbine, derivative or related gun
2. (accounting, uncountable or plural only) Initialism of accounts receivable.
3. (sports, countable) area record: best achievement among those by persons from a given continent
4. Initialism of armed robbery.
5. (computing, chiefly uncountable) Initialism of augmented reality.
6. (countable) Initialism of aspect ratio.
7. (fan fiction) alternate reality
8. (meteorology) Initialism of atmospheric river.
9. (emergency medicine) Initialism of artificial respiration.

Related terms

(augmented reality):

• VR (virtual reality)
• RR (real reality)

See also

• (gun): AK

Proper noun

AR

1. Postal abbreviation of Arkansas

Synonyms

• (Arkansas): Ark. (standard, not postal, abbreviation)

Anagrams

• RA, Ra