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estrus

[ es-truhs ]

noun

, Zoology.
  1. the period of heat or rut; the period of maximum sexual receptivity of a female mammal.

estrus

/ ˈɛstrəs; ˈiːstrəs /

noun

  1. See oestrus
    the usual US spelling of oestrus

estrus

/ ĕs′trəs /

  1. A regularly recurring period in female mammals other than humans during which the animal is sexually receptive. Estrus occurs around the time of ovulation.
  2. Also called heat

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Derived Forms

  • ˈestrous, adjective

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Other Words From

  • es·trous adjective

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Word History and Origins

Origin of estrus1

First recorded in 1885–90; from Latin oestrus oestrus

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estrualestuarine

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