from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. See noble gas.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A gas which does not undergo chemical reactions.
  • n. A noble gas.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. any of the chemically inert gaseous elements of the helium group in the periodic table


Sorry, no etymologies found.


    Sorry, no example sentences found.


Log in or sign up to get involved in the conversation. It's quick and easy.