Menstruation

(noun.) 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.

贾尼斯编辑