Entry 1 sense Webster, 1913 Corybantiasm /(-b?n"t?-?z'm)/ · Cor·y·ban·ti·asm · IPA 01 n. A kind of frenzy in which the patient is tormented by fantastic visions and want of sleep. 1. A kind of frenzy in which the patient is tormented by fantastic visions and want of sleep.(Med.)