Definition of krypton noun from the Oxford Advanced American Dictionary

 

krypton

 noun
noun
NAmE//ˈkrɪptɑn//
 
[uncountable](symbol Kr)
 
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a chemical element. Krypton is a gas that does not react with anything, used in fluorescent lights and lasers.
See the Oxford Advanced Learner's Dictionary entry: krypton

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