Menarche definition

mə-närkē
The first menstrual period of a girl or woman.
noun
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The first menstrual period of a girl in puberty.
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The initial onset of menstruation, usually occurring between the ages of 10 and 15.
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The first menstrual period.
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The onset of menstruation; the beginning of the menstrual period. A girl's first period.
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Other Word Forms

Noun

Singular:
menarche
Plural:
menarches

Origin of menarche

  • men(o)– Greek arkhē beginning (from arkhein to begin)

    From American Heritage Dictionary of the English Language, 5th Edition

  • First attested 1900, from German Menarche (1895), formed from meno- (“menstruation") + Ancient Greek ἀρχή (arche, “beginning").

    From Wiktionary