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The noun XENON has 1 sense: 1. a colorless odorless inert gaseous element occurring in the earth's atmosphere in trace amounts. Familiarity information: XENON used as a noun is very rare.
Characteristics: Xenon is a rare, colorless, odorless heavy gas. Xenon is inert towards most chemicals. Many compounds of xenon have now been made, principally with fluorine or oxygen. Both oxides, xenon trioxide (XeO 3) and xenon tetroxide (XeO 4) are highly explosive.enon was discovered in 1898, in London, by William Ramsay and Morris Travers. They discovered it in the residue remaining after liquid air had been fractionally distilled. Spectroscopic analysis showed the previously unseen beautiful blue lines that indicated the presence of a new element â xenon.