Dictionary.com

proestrus

[ proh-es-truhs ]
/ proʊˈɛs trəs /
Save This Word!

noun
the period immediately preceding estrus.
QUIZ
WILL YOU SAIL OR STUMBLE ON THESE GRAMMAR QUESTIONS?
Smoothly step over to these common grammar mistakes that trip many people up. Good luck!
Question 1 of 7
Fill in the blank: I can’t figure out _____ gave me this gift.
Also especially British, pro-oes·trus [proh-es-truhs, ‐ee-struhs] /proʊˈɛs trəs, ‐ˈi strəs/ .

Origin of proestrus

First recorded in 1920–25; pro-1 + estrus
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

British Dictionary definitions for proestrus

proestrus
/ (prəʊˈɛstrəs, -ˈiːstrəs) /

noun
the usual US spelling of pro-oestrus
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
FEEDBACK