Sexual excitement or heat of female; or period of this characterized by changes in the sex organs.
A recurrent period of sexual receptivity in female animals marked by an intense sexual urge. Slang: in heat.
The portion or phase of the sexual cycle of female animals characterized by a willingness to accept the male.
Periodic occurrence of sexual activity in female mammals, marked by acceptance of the male (commonly known as being in heat). The term is not used in reference to human sexuality.
The series of transformations that take place in the ovary and uterus, aligning with the menstrual cycle.
The phase during which sexual desire is at its peak in lower animals, signifying the mating period, especially in females. This is also referred to as being “in heat” or experiencing “rut.”