Main Entry: decidua ba·sa·lis Pronunciation: -b&-'sA-l&s Function: noun : the part of the endometrium in the pregnant human female thatparticipates with the chorion in the formation of the placenta
decidua basalis decidua ba·sa·lis (bə-sā'lĭs) n. The area of endometrium between the implanted chorionic vesicle and the myometrium, which becomes the maternal part of the placenta. Also called decidua serotina.
