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Definition of Estrous cycle
1. Noun. (context: physiology) The repeating physiological changes that are influenced by hormones controlling reproduction in placental mammals other than human beings and greater apes. ¹
¹ Source: wiktionary.com
Medical Definition of Estrous cycle
1. The series of physiologic uterine, ovarian, and other changes that occur in higher animals, consisting of proestrus, estrus, postestrus, and anestrus or diestrus. (05 Mar 2000)