Definition of estrus noun from the Oxford Advanced Learner's Dictionary

 

estrus

 
(North American English)
 
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(British English oestrus)
BrE BrE//ˈiːstrəs//
 
; NAmE NAmE//ˈestrəs//
 
noun [uncountable] (specialist) a period of time in which a female animal is ready to have sex
See the Oxford Advanced American Dictionary entry: estrus

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