From The Collaborative International Dictionary of English v.0.48 :
Catamenia \Cat`a*me"nia\ (k[a^]t`[.a]*m[=e]"n[i^]*[.a]), n. pl. [NL., fr. Gr. ta` katamh`nia.] (Med.) The monthly courses of women; menstrual discharges; menses. [1913 Webster]From WordNet (r) 3.0 (2006) :
catamenia n 1: the monthly discharge of blood from the uterus of nonpregnant women from puberty to menopause; "the women were sickly and subject to excessive menstruation"; "a woman does not take the gout unless her menses be stopped" --Hippocrates; "the semen begins to appear in males and to be emitted at the same time of life that the catamenia begin to flow in females"--Aristotle [syn: menstruation, menses, menstruum, catamenia, period, flow]