NCI Dictionary of Cancer Terms

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The NCI Dictionary of Cancer Terms features 7,863 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.

respiratory syncytial virus
(RES-pih-ruh-TOR-ee sin-SIH-shul VY-rus)
A virus that causes respiratory infections with cold-like symptoms. Also called RSV.