NCI Dictionary of Cancer Terms
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.
- listen (KEE-moh-pree-VEN-shun)
- The use of drugs, vitamins, or other agents to try to reduce the risk of, or delay the development or recurrence of, cancer.