NCI Dictionary of Cancer Terms

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The NCI Dictionary of Cancer Terms features 7,790 terms related to cancer and medicine.

Browse the dictionary by selecting a letter of the alphabet or by entering a cancer-related word or phrase in the search box.

peritoneal cavity
(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.