NCI Dictionary of Cancer Terms
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.
- listen (GAH-sih-pole)
A substance being studied in the treatment of several types of cancer. It comes from the seed of the cotton plant (
Gossypium). It blocks the growth of cells and may kill cancer cells. Gossypol may also act as a male contraceptive (a type of birth control). Also called cottonseed meal toxin.