Definitions for "Estrous Cycle"
(heat cycle) cycle of events from one heat period (or estrous period) to the next.
The time from one period of sexual receptivity in the female (estrus or heat) to the next.
the recurring periods of heat, or estrus, in the adult female of most mammals and the correlated changes in the reproductive tract from one period to the next (Morris 1992).
Keywords:  beginning, heat, days, period, time
the time period from beginning of one heat to the beginning of the next heat. Usually about 16-17 days.