XENON

xenon, Xe, atomic number

(noun) a colorless odorless inert gaseous element occurring in the earth’s atmosphere in trace amounts

Source: WordNet® 3.1

Etymology

Noun

xenon (usually uncountable, plural xenons)

The chemical element (symbol Xe) with an atomic number of 54. It is a colorless, odorless, unreactive noble gas, used notably in camera flash technology.

Anagrams

• xenno-

Source: Wiktionary

Xen"on, n. [Gr. , neut. of strange.] (Chem.)

Definition: A very heavy, inert gaseous element occurring in the atmosphere in the proportion of one volume is about 20 millions. It was discovered by Ramsay and Travers in 1898. It can be condensed to a liquid boiling at -109º C., and to a solid which volatilizes without melting. Symbol Xe or X; atomic weight 130.2.

Source: Webster’s Unabridged Dictionary 1913 Edition