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.
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"Ar" Quotes from Famous Books ![]() ![]() — The Eyes of Asia • Rudyard Kipling ![]() ![]() ![]() — Mr. Dooley in Peace and in War • Finley Peter Dunne ![]() ![]() ![]() — North and South • Elizabeth Cleghorn Gaskell ![]() ![]() ![]() — Hinduism and Buddhism, Vol I. (of 3) - An Historical Sketch • Charles Eliot ![]() ![]() ![]() — For the Term of His Natural Life • Marcus Clarke ![]() |
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