Try Our Apps
Dictionary.com

follow Dictionary.com

The Best Internet Slang

Ar

Symbol, Chemistry.
1.

AR

1.
annual return.
2.
Arkansas (approved especially for use with zip code).
3.
Army Regulation; Army Regulations.

ar-

1.
variant of ad- before r: arrear.

-ar1

1.
variant of the adjective-forming suffix -al1 , joined to words in which an l precedes the suffix: circular; lunar; singular .
Origin of -ar1
< Latin -āris; replacing Middle English -er < Anglo-French, Old French < Latin -āris

-ar2

1.
variant of -er2 , often under the influence of a spelling with -ar- in a cognate Latin noun:
burglar; cellar; collar; mortar; poplar; scholar; vicar; vinegar.

-ar3

1.
variant of -er1. on the model of -ar2 , used in the formation of nouns of agency: liar; beggar .

ar.

1.
2.
arrive; arrives.

Ar.

1.
2.

A/R

or a/r

1.
account receivable.
2.
accounts receivable.

a.r.

1.
Insurance. all risks.

A.R.

1.
annual return.
2.
Army Regulation; Army Regulations.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
Cite This Source
Examples from the Web for Ar
Contemporary Examples
Historical Examples
British Dictionary definitions for Ar

ar

abbreviation
1.
Argentina

Ar

Chemical symbol
1.
argon

AR

abbreviation
1.
Arkansas
2.
Autonomous Region
3.
Also A/R. (in the US and Canada) accounts receivable

Ar.

abbreviation
1.
Arabia(n)
2.
Also Ar. Arabic

a.r.

abbreviation
1.
anno regni
Word Origin
Latin: in the year of the reign

-ar

suffix
1.
of; belonging to; like: linear, polar, minuscular
Word Origin
via Old French -er from Latin -āris, replacing -ālis (-al1) after stems ending in l
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Cite This Source
Word Origin and History for Ar

-ar

word-formation element meaning "pertaining to, of the nature of," from Latin -arem, -aris "of the kind of, belonging to," a secondary form of -alis, dissimilated for used after syllables with an -l- (e.g. insularis for *insulalis, stellaris for *stellalis).

Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source
Ar in Medicine

Ar
The symbol for the element argon.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Cite This Source
Ar in Science
Ar  
The symbol for argon.
argon
  (är'gŏn')   
Symbol Ar
A colorless, odorless element in the noble gas group. Argon makes up about one percent of the atmosphere. It is used in electric light bulbs, fluorescent tubes, and radio vacuum tubes. Atomic number 18; atomic weight 39.948; melting point -189.2°C; boiling point -185.7°C. See Periodic Table.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source
Slang definitions & phrases for Ar

AR

noun

Armed robbery (Police)

The Dictionary of American Slang, Fourth Edition by Barbara Ann Kipfer, PhD. and Robert L. Chapman, Ph.D.
Copyright (C) 2007 by HarperCollins Publishers.
Cite This Source

Word of the Day

Difficulty index for Ar

Some English speakers likely know this word

Word Value for Ar

2
2
Scrabble Words With Friends

Nearby words for ar