- 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.
estrus definition by Webster's New World
- 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: Modern 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
estrus definition by American Heritage Dictionary
Origin: New Latin, from Latin oestrus, frenzy, gadfly, from Greek oistros; see eis- in Indo-European roots.
estrus - Medical Definition
estrus - Science Definition