Definitions
from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun A gas that is not chemically reactive, especially a noble gas.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun chemistry A
gas which does not undergochemical reactions . - noun chemistry, specifically A
noble gas .
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun any of the chemically inert gaseous elements of the helium group in the periodic table
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