noun
- the monthly discharge of blood and tissue from the uterus that occurs in women of reproductive age who are not pregnant
Usage: medical; biological
Examples
- Menstruation typically begins during puberty.
- The average menstruation cycle lasts about 28 days.
- Some women experience discomfort during menstruation.
- Menstruation usually stops during pregnancy.
- Health education classes teach students about menstruation.
- Menstruation is a normal biological process for women.