estrus

noun es·trus \ ˈe-strəs \

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

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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


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