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Argon - Dictionary Definition and Overview |
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Argon : (noun)
1: a colorless and odorless inert gas; one of the six inert
gases; comprises approximately 1% of the earth's
atmosphere [syn: Ar, atomic number 18]
Based on WordNet 2.0
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Argon : \Ar"gon\, n. [NL., fr. Gr. ?, neut. of ? inactive; ? priv.
_ ? work.] (Chem.)
A colorless, odorless gas occurring in the air (of which it
constitutes 0.93 per cent by volume), in volcanic gases,
etc.; -- so named on account of its inertness by Rayleigh and
Ramsay, who prepared and examined it in 1894-95. Symbol, A;
at. wt., 39.9. Argon is condensible to a colorless liquid
boiling at -186.1[deg] C. and to a solid melting at
-189.6[deg] C. It has a characteristic spectrum. No compounds
of it are known, but there is physical evidence that its
molecule is monatomic. Weight of one liter at 0[deg] C. and
760 mm., 1.7828 g.
Based on Webster's Revised Unabridged Dictionary
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Argon : \Ar"gon\, n. [Gr. ? inactive.] (Chem.)
A substance regarded as an element, contained in the
atmosphere and remarkable for its chemical inertness.
--Rayleigh and Ramsay.
Based on Webster's Revised Unabridged Dictionary
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Argon : Symbol: Ar
Atomic number: 18
Atomic weight: 39.948
Monatomic noble gas. Makes up 0.93% of the air. Colourless, odorless. Is
inert and has no true compounds. Lord Rayleigh and Sir william Ramsey
identified argon in 1894.
Based on Webster's Revised Unabridged Dictionary (1913)
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