anestrus

noun

an·es·trus (ˌ)an-ˈe-strəs

: the period of sexual quiescence between two periods of sexual activity in cyclically breeding mammals

Word History

Etymology

New Latin

First Known Use

1923, in the meaning defined above

Time Traveler

The first known use of anestrus was in 1923

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anestrous

anestrus

aneth

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Cite this Entry

Style

“Anestrus.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/anestrus. Accessed 3 Nov. 2025.

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Medical Definition

anestrus

noun

an·es·trus

variants or chiefly British anoestrus

-trəs

: the period of sexual quiescence between two periods of sexual activity in cyclically breeding mammals compare estrus

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