Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n.pl. The monthly flow of blood and cellular debris from the uterus that begins at puberty in women and the females of other primates. In women, menses ceases at menopause. Also called catamenia.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. The discharge of blood mixed with pieces of cellular tissue from the uterus of a female out through her vagina, which occurs roughly every month; menstrual flow.

from the GNU version of the Collaborative International Dictionary of English

  • n.pl. The catamenial or menstrual discharge, a periodic flow of blood or bloody fluid from the uterus or female generative organs.

from The Century Dictionary and Cyclopedia

  • Catamenial or monthly discharges; a periodic constitutional flow of blood or bloody fluid from the mucous coat of the uterus of a female, as a woman, monkey, bitch, or other mammal.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. the monthly discharge of blood from the uterus of nonpregnant women from puberty to menopause

Etymologies

Latin mēnsēs, pl. of mēnsis, month; see mē-2 in Indo-European roots.
(American Heritage® Dictionary of the English Language, Fourth Edition)
Latin mensis ("month"), the plural being menses ("months"), corresponding to the monthly courses of women. Confer month. (Wiktionary)

Examples

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