NCI Dictionary of Cancer Terms
The NCI Dictionary of Cancer Terms features 7,855 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 (sy-MEH-tih-deen)
- A drug usually used to treat stomach ulcers and heartburn. It is also commonly used in a regimen to prevent allergic reactions.