What is another word for decidua?
Pronunciation: [dɪsˈɪdjuːə] (IPA) 
Decidua is a term that refers to the thickened layer of cells that line the uterus during pregnancy. Some synonyms for decidua include endometrium, the mucous membrane lining the uterus, which is shed each month during menstruation; chorion, a membrane that surrounds the embryo and contributes to the formation of the placenta; and trophoblast, the outer layer of cells of the blastocyst that develops into the placenta. Other synonyms for decidua include uterine lining, gestational tissue, and pregnancy membrane. These terms are often used interchangeably in medical contexts to describe the tissue that forms during pregnancy and is shed after delivery.
