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menstrual

[men-stroo-uh l, -struh l]
adjective
  1. of or relating to menstruation or to the menses.
  2. Archaic. monthly.
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Origin of menstrual

1350–1400; Middle English menstruall < Latin mēnstruālis having monthly courses, equivalent to mēnstru(a) monthly courses (noun use of neuter plural of mēnstruus monthly; mēnstr- (see semester) + -uus adj. suffix, probably on the model of annuus annual) + -ālis -al1
Related formsin·ter·men·stru·al, adjectivepost·men·stru·al, adjectivepre·men·stru·al, adjectivepre·men·stru·al·ly, adverb
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for menstrual

menstrual

adjective
  1. of or relating to menstruation or the menses
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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 menstrual

adj.

late 14c., "pertaining to menses," also (in astronomy) "monthly," from Old French menstruel, from Latin menstrualis "monthly," especially "of or having monthly courses," from menstruus "of a month, every month, monthly, pertaining to a month," from mensis "month" (see moon (n.)).

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Online Etymology Dictionary, © 2010 Douglas Harper

menstrual in Medicine

menstrual

(mĕnstrōō-əl)
adj.
  1. Of or relating to 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.