peritoneal cavityListen to pronunciation(PAYR-ih-toh-NEE-ul KA-vuh-tee)The space within the abdomen that contains the intestines, the stomach, and the liver. It is bound by thin membranes.Enlarge this image in new windowThe peritoneal cavity is the space that contains most of the organs in the abdomen, including the liver, stomach, and intestines. The peritoneum is the tissue that lines the abdominal wall and covers most of the organs in the abdomen.Search NCI's Dictionary of Cancer TermsStarts withContainsBrowse:ABCDEFGHIJKLMNOPQRSTUVWXYZ#