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[muh-nahr-kee, me-] /məˈnɑr ki, mɛ-/
noun, Physiology
the first menstrual period; the establishment of menstruation.
Origin of menarche
1895-1900; men- + archḗ beginning
Related forms
menarcheal, menarchial, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for menarche
  • By the beginning of this century, however, the age of menarche was declining and the period of formal schooling was lengthening.
British Dictionary definitions for menarche


the first occurrence of menstruation in a woman's life
Derived Forms
menarcheal, menarchial, adjective
Word Origin
C20: New Latin, from Greek mēn month + arkhē beginning
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
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Word Origin and History for menarche

1896, from German menarche (1895), from Greek men (genitive menos) "month" (see moon (n.)) + arkhe "beginning" (see archon).

Online Etymology Dictionary, © 2010 Douglas Harper
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menarche in Medicine

menarche me·nar·che (mə-när'kē)
The first menstrual period, usually during puberty.

me·nar'che·al adj.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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menarche in Science
The first menstrual period.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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