menstrual cycle

Noun

1.

menstrual cycle - a recurring cycle (beginning at menarche and ending at menopause) in which the endometrial lining of the uterus prepares for pregnancy; if pregnancy does not occur the lining is shed at menstruation; "the average menstrual cycle is 28 days"

cycle, fertile period, fertile phase, luteal phase, menstrual phase, oscillation, safe period, secretory phase