单词	menarche
释义	menarche noun men·​ar·​che ˈme-ˌnär-kē  : the beginning of the menstrual function especially : the first menstrual period of an individual menarcheal ˌme-när-ˈkē-əl  adjective Example Sentences Recent Examples on the Web The transformation—which occurs for the first time behind a closed bathroom door, accompanied by screams that Ming hilariously mistakes for the arrival of her daughter’s menarche—isn’t prompted only by rage. Joe Morgenstern, WSJ, 10 Mar. 2022 Two of the most notable milestones are the beginning of menstruation, or menarche, in girls and the beginning of sperm production, or spermarche, with boys. Elissa Strauss, CNN, 3 Aug. 2021 Any circumstances that led to earlier menarche would decrease the relative size of females incidentally, without any change to mating system or male-male competition level or, indeed, any rationale for the size change at all. Quanta Magazine, 8 June 2020 For most of human history, women were either pregnant or lactating almost constantly from menarche to menopause, so their immune systems were always hanging in that careful balance. Viviane Callier, BostonGlobe.com, 30 Aug. 2019 Word History Etymology New Latin, from men- + Greek archē beginning First Known Use circa 1900, in the meaning defined above Medical Definition menarche noun men·​ar·​che ˈmen-ˌär-kē  : the beginning of the menstrual function especially : the first menstrual period of an individual
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