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NCI Dictionary of Cancer Terms

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NCI Dictionary of Cancer Terms



nicotine  listen  (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.