NCI Dictionary of Cancer Terms

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The NCI Dictionary of Cancer Terms features 8,201 terms related to cancer and medicine.

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degenerative disease
(deh-JEH-neh-ruh-tiv dih-ZEEZ)
A disease in which the function or structure of the affected tissues or organs changes for the worse over time. Osteoarthritis, osteoporosis, and Alzheimer disease are examples.