NCI Dictionary of Cancer Terms

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The NCI Dictionary of Cancer Terms features 7,800 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.

pediatrician
(PEE-dee-uh-TRIH-shun)
A doctor who specializes in preventing, diagnosing, and treating diseases and injuries in children. Pediatricians also help manage other problems that affect children, such as developmental disorders and behavioral, emotional, and social problems.