Menstruation (noun)

The process in a woman's body by which the lining of the uterus is shed and blood is discharged through the vagina, occurring about once a month from puberty to menopause.

Origin:

From the latin word "menstruus" meaning "of the month".

Examples:

1. During menstruation, the body is shedding the lining of the uterus.
2. Many women experience cramps and bloating during menstruation.
3. The average menstrual cycle is 28 days long.
4. Hormonal birth control can be used to regulate menstruation.
5. It is common to feel tired and emotional during menstruation.