argon Hear it!

argon definition

ar·gon (är′gän′)

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

Etymology: Gr, neut. of argos, inert, idle < a-, without + ergon, work

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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