Definitions

from The Century Dictionary.

  • noun The climax or height of the period of sexual desire in female mammals. This is preceded by the procestrum and followed by the metœstrum.
  • noun A gadfly; a breeze.
  • noun A vehement urging; a stimulus; an incitement.
  • noun [capitalized] The typical genus of Œstridæ.

from the GNU version of the Collaborative International Dictionary of English.

  • noun (Zoöl.) A genus of gadflies. The species which deposits its larvæ in the nasal cavities of sheep is œstrus ovis.
  • noun A vehement desire.
  • noun (Physiol.) The periodical sexual impulse of animals; the period during which female animals are most receptive to males; heat; rut.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun A biting fly of the genus Oestrus; a botfly.
  • noun A bite or sting.
  • noun archaic A passion or frenzy.
  • noun A female animal's readiness to mate; heat, rut.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun applies to nonhuman mammals: a state or period of heightened sexual arousal and activity
  • noun type genus of the Oestridae: sheep botflies
  • noun applies to nonhuman mammals: a state or period of heightened sexual arousal and activity

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

From the Latin oestrus ("gadfly”, “sting”, “frenzy"), from the Ancient Greek οἶστρος (oistros).

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Examples

  • Naftolin, A, et al. Neuronal membrane remodeling during the oestrus cycle: a freeze-freacture study in the arcuate nucleus of the rat hypothalemus.

    T.S. Wiley: Estrogen Dilemma: There Is No Dilemma When You Know the Details T.S. Wiley 2010

  • What does it matter if adults can only see a pair of bifurcated mobile phones, with Mandeville's eye-catching groin definition creepily hinting at of mascottian oestrus or, possibly, a urinary tract infection?

    The pitiful Olympic mascots sum up this sorry affair 2010

  • I didn't even know that dogs menstruated, or estrated -- make that "underwent estrus" (or is it oestrus?).

    French Word-A-Day: 2007

  • I didn't even know that dogs menstruated, or estrated -- make that "underwent estrus" (or is it oestrus?).

    French Word-A-Day: 2007

  • I didn't even know that dogs menstruated, or estrated -- make that "underwent estrus" (or is it oestrus?).

    saigner - French Word-A-Day 2007

  • Guilt's malignancy stalks a gas-lit shadow-dance upon the walls, perversity arouses oestrus in the embers of our trance; magic moments muted in taut breath are crushed in weighted consequence, discretion flees the night to heighten senses steeped in self-pity, drowned in self-indulgence.

    Archive 2008-07-01 Ivan Donn Carswell 2008

  • The theory of human oestrus remains controversial because its effects are subtle; human females show none of the distinct genital swellings seen in other female mammals “in heat”.

    I can hear your fertility! | ultraorange.net 2008

  • He says the changes in the female voice during peak fertility support the view that women are “different” at that point in the menstrual cycle – in other words, that they experience oestrus.

    I can hear your fertility! | ultraorange.net 2008

  • I didn't even know that dogs menstruated, or estrated--make that "underwent estrus" or is it oestrus?

    French Word-A-Day: 2007

  • I didn't even know that dogs menstruated, or estrated--make that "underwent estrus" or is it oestrus?

    saigner - French Word-A-Day 2007

Comments

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  • "In some ways, it appears, the balladist wasn't a bad guy ... aside from an uncontrollable oestrus he turned out to have for neighbourhood-grocers' wives, and one or two low incidents in consequence, Mike had no trouble with him whatever..."

    - W.M. Spackman, Heyday

    December 22, 2011

  • The oestrus of night comes down over him like a hood. By James Slater in "A Sport and a Past Time".

    February 14, 2013

  • The bot-fly of the sheep of night, now found all over the world, comes down over him like a hood. By James Slater in "A Baa Past Your Bedtime."

    February 14, 2013