hydantoin

noun
hy·​dan·​to·​in | \ hī-ˈdan-tə-wən How to pronounce hydantoin (audio) \

Medical Definition of hydantoin

1 : a crystalline weakly acidic imidazole derivative C3H4N2O2 with a sweetish taste that is found in beet juice and used in organic synthesis
2 : a derivative of hydantoin (as phenytoin)

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