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Webster's New World College Dictionary » menstruation
menstruation
menstruation definition
men·strua·tion (men′stro̵̅o̅ ā′s̸hən, men strā′s̸hən)
noun
the menses; menstrual flow or a menstrual period
Etymology: ML menstruatio
Webster's New World College Dictionary Copyright © 2005 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.
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