dilantin dilamination • Dilantin · · · Info · Definitions · Synonyms · Characters · · dilantin · · Text Latin · · Script 8 · · Length 3 · · Syllables Definitions · · · (noun) an anticonvulsant drug (trade name Dilantin) used to treat epilepsy and that is not a sedative. Synonyms: diphenylhydantoin, phenytoin, Dilantin. · · Noun Definition 1 Synonyms · · · diphenylhydantoin · · Synonym 1 phenytoin · · Synonym 2 Characters · · a latin small letter a U+0061 d latin small letter d U+0064 i latin small letter i U+0069 l latin small letter l U+006C n latin small letter n U+006E t latin small letter t U+0074