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Definitions of menarche
  1. noun
    the first occurrence of menstruation in a woman
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Definition that contains menarche
  • 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
  • primary amenorrhea delay of menarche beyond age 18
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