NCI Dictionary of Cancer Terms

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The NCI Dictionary of Cancer Terms features 7,916 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.

assistive device
(uh-SIS-tiv dee-VISE)
A tool that helps a person with a disability to do a certain task. Examples are a cane, wheelchair, scooter, walker, hearing aid, or special bed.