hydantoin hydantoic • hydathode · · · Info · Definitions · Characters · · hydantoin · · Text Latin · · Script 9 · · Length 3 · · Syllables Definitions · · · (noun) any of a group of anticonvulsant drugs used in treating epilepsy. · · Noun Definition 1 Characters · · a latin small letter a U+0061 d latin small letter d U+0064 h latin small letter h U+0068 i latin small letter i U+0069 n latin small letter n U+006E o latin small letter o U+006F t latin small letter t U+0074 y latin small letter y U+0079