The monthly flow of blood and cellular debris from the uterus that begins at puberty in women and the females of other primates. In women,menses ceases at menopause.

• 月经，从青春期开始，每月从妇女或其他灵长类雌性动物的子宫内流出的血与细胞残迹。妇女的月经在绝经期才永久性停止。