Main entry: catamenia, menses, menstruation, menstruum, flow, period
Definition: the monthly discharge of blood from the uterus of nonpregnant women from puberty to menopause
Usage: 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
Main entry: menstruum
Definition: (archaic) a solvent