tonic epilepsy tonic accent • tonic key · · · Info · Definitions · Characters · · tonic epilepsy · · Text Common · · Latin · · Scripts 14 · · Length 6 · · Syllables Definitions · · · (noun) epilepsy in which the body is rigid during the seizure. Synonyms: tonic epilepsy. · · Noun Definition 1 Characters · · space U+0020 c latin small letter c U+0063 e latin small letter e U+0065 i latin small letter i U+0069 l latin small letter l U+006C n latin small letter n U+006E o latin small letter o U+006F p latin small letter p U+0070 s latin small letter s U+0073 t latin small letter t U+0074 y latin small letter y U+0079