Meaning of noble gas

no'ble gas'

Pronunciation: [key]
— Chem. Chem.
  1. any of the chemically inert gaseous elements of group 8A or 0 of the periodic table: helium, neon, argon, krypton, xenon, and radon. Also called
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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