endometrium Meaning, Definition & Usage

  1. noun (pregnancy) the mucous membrane that lines the uterus; thickens under hormonal control and (if pregnancy does not occur) is shed in menstruation; if pregnancy occurs it is shed along with the placenta at parturition

WordNet

En`do*me"tri*um noun
Etymology
NL., fr. Gr. within + the womb.
Definitions
  1. (Anat.) The membrane lining the inner surface of the uterus, or womb.

Webster 1913