Source : Webster's Revised Unabridged Dictionary (1913)

Krypton \Kryp"ton\, n. [NL., fr. Gr. ?, neut. of ? hidden.]
   (Chem.)
   An inert gaseous element of the argon group, occurring in air
   to the extent of about one volume in a million. It was
   discovered by Ramsay and Travers in 1898. Liquefying point,
   -- 152[deg] C.; symbol, Kr; atomic weight, 83.0.

Source : WordNet®

krypton
     n : a colorless element that is one of the six inert gasses;
         occurs in trace amounts in air [syn: {Kr}, {atomic number
         36}]

Source : Free On-Line Dictionary of Computing

KRYPTON
     
        A {frame} language.
     
        ["An Essential Hybrid Reasoning System: Knowledge and Symbol
        Level Accounts of KRYPTON", R.J. Brachman et al, Proc
        IJCAI-85, 1985].