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Meaning of xenon

xe•non

Pronunciation: (zē'non, zen'on), [key]
— n. Chem.
  1. a heavy, colorless, chemically inactive, monatomic gaseous element used for filling radio, television, and luminescent tubes. Symbol: Xe; at. wt.: 131.30; at. no.: 54.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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