es·​trous | \ˈe-strəs \

Definition of estrous 

1 : of, relating to, or characteristic of estrus

2 : being in heat

Examples of estrous in a Sentence

Recent Examples on the Web

The male seen in the video is likely confusing the new mother's hormonal scent with that of a female in estrous. Sarah Gibbens, National Geographic, "Why This Male Elephant Attacked a Newborn Calf," 2 May 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'estrous.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of estrous

1900, in the meaning defined at sense 1

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The first known use of estrous was in 1900

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More Definitions for estrous


es·​trous | \ˈes-trəs \
variants: or chiefly British oestrous \ˈē-​strəs \

Medical Definition of estrous 

1 : of, relating to, or characteristic of estrus

2 : being in heat

More from Merriam-Webster on estrous

Rhyming Dictionary: Words that rhyme with estrous

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