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Argon

see synonyms of argon

Noun

1. ar, argon, atomic number 18

a colorless and odorless inert gas; one of the six inert gases; comprises approximately 1% of the earth's atmosphere

WordNet Lexical Database for English. Princeton University. 2010.

Argon

see synonyms of argon
noun
an extremely unreactive colourless odourless element of the rare gas series that forms almost 1 per cent (by volume) of the atmosphere. It is used in electric lights. Symbol: Ar; atomic no: 18; atomic wt: 39.948; density: 1.7837 kg/m3; freezing pt: –189.3°C; boiling pt: –185.9°C

Collins English Dictionary. Copyright © HarperCollins Publishers

Argon

see synonyms of argon
noun
a colorless, odorless chemical element, one of the noble gases, constituting nearly 1% of the atmosphere: it is used in incandescent light bulbs, radio tubes, welding, etc.: symbol, Ar; at. no., 18
see the periodic table of elements in the Reference Supplement

Webster’s New World College Dictionary, 4th Edition. Copyright © 2010 by Houghton Mifflin Harcourt. All rights reserved.

Argon

see synonyms of argon
n. Symbol Ar
A colorless, odorless, inert gaseous element constituting approximately one percent of the earth's atmosphere, from which it is commercially obtained by fractionation for use in electric light bulbs, fluorescent tubes, and radio vacuum tubes and as an inert gas shield in arc welding. Atomic number 18; atomic weight 39.948; melting point -189.36°C; boiling point -185.85°C. See Periodic Table.

The American Heritage ® Dictionary of the English Language, Fifth Edition copyright ©2018 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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