NCI Dictionary of Cancer Terms
The NCI Dictionary of Cancer Terms features 7,777 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 (pen-TA-mih-deen)
- The active ingredient in a drug used to treat infections caused by certain microorganisms. It is also being studied in the treatment of melanoma. It prevents DNA from being copied and may kill cancer cells. It is a type of antifungal agent, a type of antiprotozoal agent, and a type of PRL phosphatase inhibitor.