From Longman Dictionary of Contemporary Englishkryptonkryp‧ton /ˈkrɪptɒn $ -tɑːn/ noun [uncountable] HCEa colourless gas that is found in very small quantities in the air and is used in fluorescent lights and lasers. It is a chemical element: symbol Kr
Examples from the Corpus
krypton• Physical trapping is likely to be about as effective for neon, argon and krypton.• A good choice is one of the inert gases; neon, argon, krypton, or xenon.• They are the noble gases: neon, argon, krypton, xenon, and radon.• There are also tiny traces of other noble gases besides argon, namely, neon, krypton, and xenon.• For matrix materials like methane, nitrogen, krypton and xenon, this is not too surprising.• A compromise was needed; a mixture of krypton and argon proved suitable.KryptonKrypton the imaginary planet where the character Superman is supposed to have been bornOrigin krypton (1800-1900) Greek kryptos “hidden” 