NCI Dictionary of Cancer Terms
The NCI Dictionary of Cancer Terms features 7,899 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 (zy-LOO-tin)
- A substance that is used to prevent asthma symptoms and that is being studied in the prevention of lung cancer. It belongs to the family of drugs called leukotriene blockers.