AR Definition - AR Meaning

1 : a colorless and odorless inert gas; one of the six inert gases; comprises approximately % of the earth's atmosphere [syn: {argon}, {Ar}, {atomic number }]

2 : a unit of surface area equal to square meters [syn: {are}, {ar}]

3 : a state in south central United States; one of the Confederate states during the American Civil War [syn: {Arkansas}, {Land of Opportunity}, {AR}]