- Estrus is defined as the period of sexual heat in a female.
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
The periodic state of sexual excitement in the female of most mammals, excluding humans, that immediately precedes ovulation and during which the female is most receptive to mating; heat.
Origin of estrusNew Latin, from Latin oestrus, frenzy, gadfly, from Greek oistros; see eis- in Indo-European roots.