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: a chemical element that is a colorless gas and that is used especially in electric lights
Full Definition of XENON
: a heavy colorless and relatively inert gaseous element that occurs in air as about one part in 20 million and is used especially in specialized electric lamps (as flashtubes) and in scientific research — see element table
: a heavy, colorless, and relatively inert gaseous element that occurs in air as about one part in 20 million by volume—symbol Xe; see element table
Chemical element, chemical symbol Xe, atomic number 54. One of the noble gases, it is colourless, odourless, tasteless, and nearly inert, combining only with fluorine and oxygen and in complexes (seebonding). Xenon occurs in slight traces in Earth's atmosphere and in rocks. Obtained by fractional distillation of liquefied air, it is used in luminescent tubes (seeelectric discharge lamp), flash lamps, lasers, and tracer studies and as an anesthetic.