Ar

Noun Ar has 3 senses

• ar(n = noun.substance) argon, atomic number 18 - a colorless and odorless inert gas; one of the six inert gases; comprises approximately 1% of the earth's atmosphere; Array
is a kind of chemical element, element, argonon, inert gas, noble gas

• ar(n = noun.quantity) are - a unit of surface area equal to 100 square meters; Array
is a kind of area unit, square measure
is a part of hectare

• ar(n = noun.location) arkansas, land of opportunity - a state in south central United States; one of the Confederate states during the American Civil War; Array
has parts: hot springs national park, fayetteville, fort smith, hot springs, jonesboro, capital of arkansas, little rock, pine bluff, texarkana, arkansas, arkansas river, ouachita, ouachita river, ozark mountains, ozark plateau, ozarks, saint francis, saint francis river, st. francis, st. francis river, white, white river
is a kind of american state
is a part of america, the states, u.s., u.s.a., united states, united states of america, us, usa
is a member of confederacy, confederate states, confederate states of america, dixie, dixieland, south