‖n. pl. [ NL., fr. Gr. ta` katamh`nia. ] (Med.) The monthly courses of women; menstrual discharges; menses. [ 1913 Webster ]

a. [ Gr. katamh`nios monthly; kata` down, back, again + mh`n month. ] Pertaining to the catamenia, or menstrual discharges. [ 1913 Webster ]