Definition of kryptonite in English:

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Pronunciation: /ˈkrɪptənʌɪt/


[mass noun]
(In science fiction) an alien mineral with the property of depriving Superman of his powers: figurative girls of her sort are kryptonite to the developing hearts of adolescent boys
More example sentences
  • Remember when polystyrene foam was environmental kryptonite?
  • These things are like kryptonite to terrorists.
  • Did the Raiders uncover Pennington's kryptonite?

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Line breaks: kryp¦ton|ite

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