- pertaining to or involving the estrus.
Origin of estrous
First recorded in 1895–1900; see origin at oestrous
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- Relating to or being in estrus.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.