11 letters · 16 points in Scrabble
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
originFrom endo- (“inner”) + Late Latin metrium (“womb”), from Ancient Greek μήτριον (mḗtrion, “of a mother”). Compare μήτρᾱ (mḗtrā, “womb”).
Etymology from Wiktionary, CC BY-SA 3.0