œstrus

A form of oestrus — A biting fly of the genus Oestrus; a botfly.

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Meanings

nounœstrus (countable and uncountable, plural œstruses or œstri)

plural œstruses · plural œstri

  1. countableobsoleteuncountableObsolete form of oestrus.

    Œstrus was noted in a Black-faced ewe (not a virgin) in the beginning of February, and the ewe was served by a ram of its own breed.

    1903, Francis H[ugh] A[dam] Marshall, The Œstrous Cycle and the Formation of the Corpus Luteum in the Sheep (Philosophical Transactions of the Royal Society of London, series B, volume 196), London: […] [F]or the Royal Society by Dulau and Co., […], page 67
Cite this entry
APA

œstrus. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/%C5%93strus

MLA

“œstrus.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/%C5%93strus. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “œstrus,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/%C5%93strus.

Source: œstrus on Wiktionary, CC BY-SA 4.0.