Medical Dictionary
proestrus
noun pro·es·trus \-ˈes-trəs\
Medical Definition of PROESTRUS
: a preparatory period immediately preceding estrus and characterized by growth of graafian follicles, increased estrogenic activity, and alteration of uterine and vaginal mucosa
Variants of PROESTRUS
pro·es·trus or pro·es·trum \-ˈes-trəm\ or chiefly British pro–oes·trus or pro–oes·trum \-ˈēs-\
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