English

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Etymology

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From Ancient Greek θηλή (thēlḗ, nipple) +‎ -arche.

Pronunciation

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Noun

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thelarche (uncountable)

  1. The first stage of postnatal breast development, usually occurring at the beginning of puberty in girls, in which a firm, tender lump develops under the centre of the nipple.
    Coordinate term: menarche
  2. The process of breast development or the period of such development.

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