Definition of kryptonite in English:

kryptonite

Line breaks: kryp¦ton|ite
Pronunciation: /ˈkrɪptənʌɪt/

Entry from British & World English dictionary

noun

[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

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Pronunciation: kərf
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a slit made by cutting with a saw