proestrus

noun

pro·​es·​trus (ˌ)prō-ˈe-strəs How to pronounce proestrus (audio)
: a period immediately preceding estrus characterized by preparatory physiological changes

Word History

Etymology

New Latin

First Known Use

1906, in the meaning defined above

Time Traveler
The first known use of proestrus was in 1906

Dictionary Entries Near proestrus

Cite this Entry

“Proestrus.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/proestrus. Accessed 7 Nov. 2024.

Medical Definition

proestrus

noun
pro·​es·​trus -ˈes-trəs How to pronounce proestrus (audio)
variants or proestrum or chiefly British pro-oestrus or pro-oestrum
: a preparatory period immediately preceding estrus and characterized by growth of graafian follicles, increased estrogenic activity, and alteration of uterine and vaginal mucosa

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