Menstrual Glossary A to Z

Menstruation

The monthly shedding of the endometrium. Menstruation is the part of a woman's menstrual cycle where the endometrium (lining of the uterus) is shed, resulting in discharge of blood. Menstruation occurs each month if the egg released at ovulation is not fertilized. It occurs from menarche during puberty until menopause.

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