An example of estrus is the period of time when a female animal is looking for a sexual mate.
- the periodic sexual excitement of most female placental mammals, corresponding to rut in males; heat
- the period of this when the female will accept mating with the male, characterized by changes in the sex organs
Origin of estrusModern Latin ; from Classical Latin oestrus, gadfly, horsefly, frenzy ; from Classical Greek oistros, gadfly, sting, frenzy ; from Indo-European base an unverified form eis-, to move violently from source Old Norse eisa, to rush on, Classical Latin ira, ire, Lithuanian aistra, violent passion
Origin of estrusNew Latin, from Latin oestrus, frenzy, gadfly, from Greek oistros; see eis- in Indo-European roots.
- (American) Alternative spelling of oestrus.