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menstruation

Definitions of menstruation
  1. noun
    the monthly discharge of blood from the uterus of nonpregnant women from puberty to menopause
    synonyms: catamenia, flow, menses, menstruum, period
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    types:
    hypermenorrhea, menorrhagia
    abnormally heavy or prolonged menstruation; can be a symptom of uterine tumors and can lead to anemia if prolonged
    oligomenorrhea
    abnormally light or infrequent menstruation
    type of:
    discharge, emission, expelling
    any of several bodily processes by which substances go out of the body
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