periodnoun

SMART Vocabulary: related words and phrases

Obstetrics: processes & stages connected with sexual reproduction
amniotic
andropause
anovulatory
come on
hot flush
inseminate
luteal
matrescence
menopausal
menopause
menses
menstrual
menstrual cycle
ovulation
puberty
receptivity
sexual intercourse
sexual reproduction
someone's biological clock is ticking idiom
the change (of life)idiom

menstruation | American Dictionary

menstruation
noun[ U ]
us/ˌmen·struˈeɪ·ʃən/
the flow of blood from a woman’s uterus