'Hydantoin' definitions:

Definition of 'hydantoin'

(from WordNet)

noun

Any of a group of anticonvulsant drugs used in treating epilepsy

Definition of 'Hydantoin'

From: GCIDE

Hydantoin \Hy*dan"to*in\, n. [Hydrogen + allantion.] (Chem.) A derivative of urea, C3H4N2O2, obtained from allantion, as a white, crystalline substance, with a sweetish taste; -- called also glycolyl urea. [1913 Webster]

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