NCI Dictionary of Cancer Terms
The NCI Dictionary of Cancer Terms features 8,020 terms related to cancer and medicine.
- listen (meh-TA-boh-lite)
- A substance made or used when the body breaks down food, drugs or chemicals, or its own tissue (for example, fat or muscle tissue). This process, called metabolism, makes energy and the materials needed for growth, reproduction, and maintaining health. It also helps get rid of toxic substances.