Entry 1 sense Webster, 1913 Catamenia /(kăt`ȧ*mē"nĭ*ȧ)/ · Cat·a·me·nia · IPA /kæ.təˈmi.nɪ.ə/ 01 n. pl. The monthly courses of women; menstrual discharges; menses. 1. The monthly courses of women; menstrual discharges; menses.(Med.)