NCI Dictionary of Cancer Terms

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The NCI Dictionary of Cancer Terms features 7,863 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.

barium solution
(BAYR-ee-um suh-LOO-shun)
A liquid that contains barium sulfate (a form of the silver-white metallic element barium). It is used to show pictures of parts of the digestive system in x-rays.