Tobacco

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Medical Definition of Tobacco

Tobacco: A South American herb (Nicotiana tabacum) whose leaves contain 2 to 8 percent nicotine and serve as the source of both smoking and smokeless tobacco and the basis of great health hazards.


Quick Guide25 Effects of Smoking on Your Looks and Life

25 Effects of Smoking on Your Looks and Life

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Reviewed on 3/19/2012

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