nicotine


nic·o·tine

noun \ˈni-kə-ˌtēn\

: a poisonous substance in tobacco that makes it difficult for people to stop smoking cigarettes

Full Definition of NICOTINE

:  a poisonous alkaloid C10H14N2 that is the chief active principle of tobacco and is used as an insecticide

Origin of NICOTINE

French, from New Latin nicotiana
First Known Use: 1819

nic·o·tine

noun \ˈnik-ə-ˌtēn\   (Medical Dictionary)

Medical Definition of NICOTINE

: a poisonous alkaloid C10H14N2 that is the chief active principle of tobacco and that is used as an insecticide

Biographical Note for NICOTINE

Ni·cot \nē-kō\ , Jean (1530?–1600), French diplomat. While French ambassador to Portugal, Nicot introduced tobacco to France by sending tobacco seeds as a gift to the French court in 1560. Linnaeus named the plant genus Nicotiana in his honor in 1753.

nicotine

noun    (Concise Encyclopedia)

Principal alkaloid of tobacco, occurring throughout the plant but mostly in the leaves. It is a heterocyclic compound containing a pyridine ring; its chemical formula is CHN. Nicotine is the chief addictive ingredient (see drug addiction) in cigarettes and cigars and in snuff. It has a unique biphasic effect: inhaled in short puffs, it is a stimulant, but it can be a tranquilizer when inhaled slowly and deeply. In larger doses nicotine is a highly toxic poison, used as an insecticide, fumigant, and vermifuge.

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