| var. of the adjective-forming suffix -al1, joined to words in which an l precedes the suffix: circular; lunar; singular. |

| var. of -er 2 , often under the influence of a spelling with -ar- in a cognate Latin noun: burglar; cellar; collar; mortar; poplar; scholar; vicar; vinegar. |
| 1. | annual return. |
| 2. | Arkansas (approved esp. for use with zip code). |
| 3. | Army Regulation; Army Regulations. |
| Arabic. |
| argon. |
| 1. | arrival. |
| 2. | arrive; arrives. |
| 1. | account receivable. |
| 2. | accounts receivable. |
| 1. | annual return. |
| 2. | Army Regulation; Army Regulations. |
| Insurance. all risks. |
ar 1 (är) n. Variant of are2. |
| Ar The symbol for the element argon. |
| AR abbr.
|
ar·gon (är'gŏn') n. Symbol Ar A colorless, odorless, inert gaseous element constituting approximately one percent of Earth's atmosphere, from which it is commercially obtained by fractionation for use in electric light bulbs, fluorescent tubes, and radio vacuum tubes and as an inert gas shield in arc welding. Atomic number 18; atomic weight 39.948; melting point -189.3°C; boiling point -185.9°C. See Table at element. [From Greek ārgon, neuter of ārgos, idle, inert : a-, without; see a-1 + ergon, work; see werg- in Indo-European roots.] |
Ar
The symbol for the element argon.
ar networking
The country code for Argentina.
(1999-01-27)
| ar Arabic |
| Ar argon |
AR
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