NCI Dictionary of Cancer Terms

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The NCI Dictionary of Cancer Terms features 7,804 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.

cottonseed meal toxin
(KAH-tun-SEED meel TOK-sin)
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. Cottonseed meal toxin may also act as a male contraceptive (a type of birth control). Also called gossypol.