NCI Dictionary of Cancer Terms
The NCI Dictionary of Cancer Terms features 7,791 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.
- listen (KAL-sih-TOH-nin)
- A hormone formed by the C cells of the thyroid gland. It helps maintain a healthy level of calcium in the blood. When the calcium level is too high, calcitonin lowers it.