noun
- a recurring period of sexual receptivity and fertility in female mammals, during which they are capable of conceiving; heat.
Usage: Also spelled 'estrus' in U.S. English.; Biological/veterinary term.
Examples
- The mare entered oestrus in the spring, signaling her readiness to breed.
- Veterinarians monitor the oestrus cycle to determine the best time for breeding.
- During oestrus, female dogs display behavioral and physical changes.
- The oestrus period typically lasts several days in most mammalian species.
- Hormonal changes trigger the onset of oestrus in cattle.