NCI Dictionary of Cancer Terms

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The NCI Dictionary of Cancer Terms features 7,846 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.

twelve-step program
(... PROH-gram)
A program to help people recover from substance abuse, emotional disorders, or addictions. The twelve steps come from an organization called Alcoholics Anonymous (AA) and are changed for each specific condition.