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proestrus

[ proh-es-truhs ]

noun

, Zoology.
  1. (in female mammals) the first stage of the reproduction cycle, immediately preceding estrus.

proestrus

/ -ˈiːstrəs; prəʊˈɛstrəs /

noun

  1. See pro-oestrus
    the usual US spelling of pro-oestrus

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Word History and Origins

Origin of proestrus1

First recorded in 1920–25; pro- 1 + estrus

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