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Definition of: nicotine
(nik′ə·tēn, -tin) noun
A poisonous, colorless, oily, liquid alkaloid, C10H14N2, with a very acrid taste, contained in the leaves of tobacco. Also nic′o·tin. [after Jean Nicot, 1530–1604, French courtier, who introduced tobacco into France from Portugal]
—nic·o·tin·ic (nik′ə·tin′ik) adjective
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