estrous cycle

estrous cycle   n.  The recurrent set of physiological and behavioral changes that take place from one period of estrus to another.

Main Entry: estrous cycle
Function: noun
: the correlated phenomena of the endocrine and generative systems of a female mammal from the beginning of one period of estrusto the beginning of the next called also estral cycle, estrus cycle

estrous cycle n.
The recurrent set of physiological and behavioral changes that take place from one period of estrus to another.

estrous cycle   (ěs'trəs)  Pronunciation Key  The series of changes that occur in the female of most mammals from one period of estrus to another. The estrous cycle usually takes place during the period known as the breeding season, which ensures that young are born at a time when the chance of survival is greatest. The length of the cycle varies from species to species.