Found 2 items, similar to Krypton.
English → English (WordNet) Definition: krypton krypton n : a colorless element that is one of the six inert gasses; occurs in trace amounts in air [syn: Kr, atomic number 36 ]
English → English (gcide) Definition: Krypton Krypton \Kryp"ton\ (kr[i^]p"t[o^]n), n. [NL., fr. Gr. krypto`n, neut. of krypto`s hidden.] (Chem.) An inert gaseous element of the argon (noble gas) group, of atomic number 36, occurring in air to the extent of about one volume in a million. It was discovered by Ramsay and Travers in 1898. Boiling point, -152.3[deg] C.; melting point, -156.6[deg] C.; symbol, Kr; atomic weight, 83.8. [Webster 1913 Suppl.]