menstrual cycle

Definitions of menstrual cycle
  1. noun
    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”
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    type of:
    cycle, oscillation
    a single complete execution of a periodically repeated phenomenon
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