Dilantin dilamination • dilapidate · · · Info · Definitions · Synonyms · Characters · · Dilantin · · Text Latin · · Script 8 · · Length Definitions · · · (noun) an anticonvulsant drug (trade name Dilantin) used to treat epilepsy and that is not a sedative. Synonyms: diphenylhydantoin, phenytoin. · · Noun Definition 1 Synonyms · · · diphenylhydantoin · · Synonym 1 phenytoin · · Synonym 2 Characters · · D latin capital letter d U+0044 a latin small letter a U+0061 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