Definition of estrus
: a regularly recurrent state of sexual receptivity during which the female of most mammals will accept the male and is capable of conceiving : heat Some mares will exhibit estrus for 15 to 20 days. — Frederick Harper; also : a single occurrence of this state
Recent Examples of estrus from the Web
Mei Xiang, who is 18 years old and has birthed three cubs at the zoo, has been showing signs over the past few weeks of being in estrus.
Making their jobs more difficult, mares can come into estrus a mere six days after giving birth.
But one of the females was in estrus, her rump exceptionally pink and swollen, and four males in the group were too excited to sleep.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'estrus.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
estrum\-trəm\play or chiefly British
oestrus\ˈē-strəs\play play or
Medical Definition of estrus
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