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menstruate

[men-stroo-eyt, -streyt]
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verb (used without object), men·stru·at·ed, men·stru·at·ing.
  1. to undergo menstruation.
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Origin of menstruate

1640–50; v. use of earlier menstruate menstruous, Middle English < Late Latin mēnstruātus, equivalent to mēnstru(a) monthly courses (see menstrual) + -ātus -ate1
Related formsun·men·stru·at·ing, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for menstruating

menstruate

verb
  1. (intr) to undergo menstruation
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Word Origin

C17: from Latin menstruāre, from mensis month
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for menstruating

menstruate

v.

1680s, probably a back-formation from menstruation, or else from Latin menstruatus, past participle of menstruare. Related: Menstruated; menstruating.

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Online Etymology Dictionary, © 2010 Douglas Harper

menstruating in Medicine

menstruate

(mĕnstrōō-āt′)
v.
  1. To undergo menstruation.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.