NCI Dictionary of Cancer Terms

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The NCI Dictionary of Cancer Terms features 7,989 terms related to cancer and medicine.

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nicotine
(NIH-kuh-TEEN)
An addictive, poisonous chemical found in tobacco. It can also be made in the laboratory. When it enters the body, nicotine causes an increased heart rate and use of oxygen by the heart, and a sense of well-being and relaxation. It is also used as an insecticide.