Word.ws English Dictionary

estrus

estrus is the alternative spelling of oestrus.

Meaning of oestrus

Noun

oestrus (countable and uncountable, plural oestruses or oestri)

  1. (countable) A biting fly of the genus Oestrus; a botfly.
    • […] and which is produced by the larvae of oestri and particularly of Oestrus hemorrhoidalis.1915, American Veterinary Review, page 407
  2. (countable) A bite or sting.
  3. (archaic, countable) A passion or frenzy.
  4. A female animal's readiness to mate.
    • In those monoestrous species in which the male is capable all the year round, it is found that the oestri of individual females come at different seasons.1910, Cleveland Medical Journal, page 517

Forms of estrus

pluralestruses

Words formed from estrus

Questions about estrus

What is estrus the alternative spelling of?
Estrus is the alternative spelling of oestrus.

Words near estrus in the dictionary

  1. estruate
  2. estruation
  3. estruations
  4. estrum
  5. estrums
  6. estrus
  7. estruses
  8. Estrébœuf
  9. ests
  10. estuarial
  11. estuarially

Source and license

Adapted from Wiktionary: estrus (page history and authors); oestrus (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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Cite this entry: “estrus.” Word.ws, https://word.ws/estrus. Based on Wiktionary, CC BY-SA 4.0.