Ar
| conj. | 1. | Ere; before. |
| Noun | 1. | Ar - a colorless and odorless inert gas; one of the six inert gases; comprises approximately 1% of the earth's atmosphere Synonyms: argon, atomic number 18 |
| 2. | ar - a unit of surface area equal to 100 square meters Synonyms: are | |
| 3. |  AR - a state in south central United States; one of the Confederate states during the American Civil WarSynonyms: Arkansas, Land of Opportunity |
| (networking) | ar - The country code for Argentina. |