noun (used with a singular or plural verb) Physiology.
the periodic flow of blood and mucosal tissue from the uterus; menstrual flow.

1590–1600; < Latin mēnsēs, plural of mēnsis month Unabridged


[mens] British Dialect.
propriety; discretion.
verb (used with object), mensed, mensing.
to adorn; bring honor to; grace.

1490–1500; variant (north) of mensk, Middle English menske courtesy, honor < Old Norse menska humanity, cognate with Old English menniscu literally, the human state; akin to mensch. See man1, -ish1

menseful, adjective
menseless, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
menses (ˈmɛnsiːz)
n , pl menses
1.  another name for menstruation
2.  the period of time, usually from three to five days, during which menstruation occurs
3.  the matter discharged during menstruation
[C16: from Latin, pl of mensis month]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Word Origin & History

"monthly discharge of blood from the uterus," 1597, from L. menses, pl. of mensis "month," from PIE *menes- "moon, month."
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

menses men·ses (měn'sēz)
The monthly flow of blood and cellular debris from the uterus that begins at puberty and ceases at menopause. Also called emmenia, menstrual period.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
menses   (měn'sēz)  Pronunciation Key 
See menstruation.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Example sentences
If a blood clot blocks the flow of menses through the cervix, retrograde menstruation may be even more likely.
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