metestrusWiktionary 原文英美构词拆解metmet-前缀estrusestrus词干met-prevocalic form of meta-词源说明From met- + estrus.释义名词noun1A phase of the oestrus cycle where the signs of oestrogen stimulation subside, the corpus luteum starts to form, and the uterine lining begins to secrete small amounts of progesterone.