释义 |
pro·estrus noun or pro·estrum also pro·oestrus or pro·oestrum \“+\ (plural proestruses or proestrums) Etymology: New Latin, from pro- (I) + estrus, estrum, oestrus, oestrum : a preparatory period immediately preceding estrus and characterized by growth of graafian follicles, increased estrogenic activity, and alteration of uterine and vaginal mucosa |