[es-truh s, ee-struh s] /ˈɛs trəs, ˈi strəs/

/ˈiːstrəs; ˈɛstrəs/
a regularly occurring period of sexual receptivity in most female mammals, except humans, during which ovulation occurs and copulation can take place; heat

see estrus.

oestrus oes·trus (ěs’trəs)
Variant of estrus.


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