NCI Dictionary of Cancer Terms

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The NCI Dictionary of Cancer Terms features 7,800 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.

achlorhydria
(ay-klor-HY-dree-uh)
A lack of hydrochloric acid in the digestive juices in the stomach. Hydrochloric acid helps digest food.