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• Ar
  Ar

  abbreviation

  Arabic.
• AR
  AR

  abbreviation

  annual return.
• A/R
  A/R

  account receivable.
• ar-
  ar-

  variant of ad- before r: arrears.
• -ar
  -ar

  variant of the adjective-forming suffix -al, joined to words in which an l precedes the suffix: circular; lunar; singular .
• ar.
  ar.

  abbreviation

  arrival.
• a.r.
  a.r.

  abbreviation

  all risks.
• A.R.
  A.R.

  abbreviation

  annual return.
• Ar.
  Ar.

  abbreviation

  Arabia(n)
• ar
  ar

  abbreviation

  Argentina

Ar

¹ American  

Or Ar.

abbreviation

1. Arabic.

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Ar ² American  

Symbol, Chemistry.

1. argon.

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AR ³ American  

abbreviation

1. annual return.

2. (loosely) AR-15.

3. Arkansas (approved especially for use with zip code).

4. Army Regulation.

   This regulation supersedes AR 600-20, dated 6 November 2014.

5. atmospheric river.

6. augmented reality.

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A/R ⁴ American  

Or a/r

1. account receivable.

2. accounts receivable.

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ar- ⁵ American  

1. variant of ad- before r: arrears.

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-ar ⁶ American  

1. variant of the adjective-forming suffix -al, joined to words in which an l precedes the suffix: circular; lunar; singular .

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-ar ⁷ American  

1. variant of -er, often under the influence of a spelling with -ar- in a cognate Latin noun.

   burglar; cellar; collar; mortar; poplar; scholar; vicar; vinegar.

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-ar ⁸ American  

1. variant of -er on the model of -ar, used in the formation of nouns of agency: liar; beggar .

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ar. ⁹ American  

abbreviation

1. arrival.

2. arrive; arrives.

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a.r. ¹⁰ American  

abbreviation

1. Insurance. all risks.

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A.R. ¹¹ American  

abbreviation

1. annual return.

2. Army Regulation; Army Regulations.

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AR ¹ British  

abbreviation

1. Arkansas

2. Autonomous Region

3. Also: A/R.  (in the US and Canada) accounts receivable

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Ar. ² British  

abbreviation

1. Arabia(n)

2. Also: Ar.  Arabic

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-ar ³ British  

suffix

1. of; belonging to; like

   linear

   polar

   minuscular

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Ar ⁴ British  

symbol

1. argon

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a.r. ⁵ British  

abbreviation

1. anno regni

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ar ⁶ British  

abbreviation

1. Argentina

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Usage

What else does AR mean? AR can stand for hundreds of things, but here are three of the big ones: augmented reality, alternate reality, and ArmaLite rifle. How do you pronounce AR?[ ey-ahr ]

Etymology

Origin of -ar

< Latin -āris; replacing Middle English -er < Anglo-French, Old French < Latin -āris

Example Sentences

Ilaiyaraaja dominated Tamil film music until the rise of AR Rahman in the early 1990s.

From BBC • Jun. 6, 2026

“He understands how important it is for Luka and AR to have time on the ball,” Redick said.

From Los Angeles Times • Mar. 13, 2026

There are some researchers and developers working with augmented reality, so if you’re wearing their glasses with an AR display, they will navigate you to your desired location.

From The Wall Street Journal • Feb. 14, 2026

He collaborated repeatedly with leading composers including Pritam, AR Rahman, Vishal–Shekhar and Amit Trivedi.

From BBC • Jan. 28, 2026

I knew she would say “Breakfast” And once she did, I went home that afternoon and told my mom that my health teacher said the most important meal of the day is breakfast AR: Ahhh!

From "The Landry News" by Andrew Clements