Final answer:
Menopause is the term for when menstruation stops, typically happening in the mid- to late forties or early fifties, marking the end of reproductive ability for a woman.
Step-by-step explanation:
The medical term for when menstruation stops is menopause. This natural biological process marks the end of a woman's reproductive years. During menopause, menstrual cycles slow down and eventually stop. This typically occurs in the mid- to late forties or early fifties. After reaching menopause, a woman's ovaries no longer release eggs, and she can no longer reproduce naturally. Menstruation, which is the shedding of the lining of the uterus (endometrium), is also known as the menstrual period or menses and forms part of the monthly menstrual cycle, which ends with menopause.