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menstruation: Meaning and Definition of

men•stru•a•tion

Pronunciation: (men"str-ā'shun, -strā'-), [key]
— n.
  1. the periodic discharge of blood and mucosal tissue from the uterus, occurring approximately monthly from puberty to menopause in nonpregnant women and females of other primate species.
  2. the period of menstruating.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
See also:
menstruate menstruous
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