estrus

noun es·trus \ ˈe-strəs \
Updated on: 23 Nov 2017

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

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.

Origin and Etymology of estrus

New Latin, from Latin oestrus gadfly, frenzy, from Greek oistros — more at ire


Medical Dictionary

estrus

noun es·trus \ ˈes-trəs \
variants: or estrum play \-trəm\ or chiefly British oestrus play \ˈē-strəs\ or oestrum play \ˈē-strəm\

medical Definition of estrus

1 a : a regularly recurrent state of sexual excitability during which the female of most mammals will accept the male and is capable of conceiving : heat
b : a single occurrence of this state


Seen and Heard

What made you want to look up estrus? Please tell us where you read or heard it (including the quote, if possible).

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

WORD OF THE DAY

of or relating to dancing

Get Word of the Day daily email!

Test Your Vocabulary

Star Wars Words Quiz

  • cu-jedi-training
  • The bounty portion of bounty hunters (such as Boba Fett) comes from a Latin word meaning
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
Word Winder's CrossWinder

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!