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nicotine    音标拼音: [n'ɪkət,in]
n. 烟碱

烟硷

nicotine
n 1: an alkaloid poison that occurs in tobacco; used in medicine
and as an insecticide

Nicotine \Nic"o*tine\ (? or ?), n. [F. nicotine. See
{Nicotian}.] (Chem.)
An alkaloid which is the active principle of tobacco
({C10H14N2}). It occurs in tobacco plants ({Nicotiana
tabacum} and {Nicotiana rusticum}) to the extent of 2 to 8%,
in combination with malic acid or citric acid. It is a
colorless, transparent, oily liquid, having an acrid odor,
and an acrid burning taste. It is intensely poisonous. The
apparently addictive effects of tobacco smoking have been
ascribed largely to the effect of nicotine, and the
controlled administration of nicotine on various forms has
been used as a technique for assisting efforts to stop the
smoking habit. --Ure.
[1913 Webster PJC]


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  • Nicotine - Wikipedia
    Nicotine is typically consumed through tobacco smoking, vaping, or other nicotine delivery systems An average cigarette yields about 2 mg of absorbed nicotine, a dose sufficient to produce reinforcement and dependence while remaining far below toxic levels [12]
  • Nicotine: How It Works, Uses, Risks, Benefits - Verywell Health
    Nicotine is an addictive organic compound found in tobacco plants It’s the chemical that makes smoking cigarettes, chewing tobacco, and vaping so hard to quit Nicotine is associated with many health risks and problems Tobacco is linked to cancer of the mouth, throat, and lungs
  • Nicotine: Facts, effects, and dependency - Medical News Today
    Nicotine is highly addictive and harmful It is a component in cigarettes and some e-cigarette liquid Learn more here
  • What Nicotine Does to Your Body - Verywell Mind
    Nicotine increases heart rate and blood pressure, and long-term use can damage your heart and lungs Overcoming nicotine addiction is hard, but therapy and nicotine replacement can help you quit
  • Nicotine benefits, dosage, and side effects - Examine
    Nicotine is the main stimulatory compound found in cigarettes and is now sold in vaporizers and patches in isolation It works on the acetylcholine system, and is implicated in cognitive enhancement
  • Nicotine: From Discovery to Biological Effects - PMC
    Nicotine, the primary psychoactive agent in tobacco leaves, has led to the widespread use of tobacco, with over one billion smokers globally This article provides a historical overview of tobacco and discusses tobacco dependence, as well as the
  • Nicotine - American Lung Association
    Nicotine is the addictive drug in tobacco products Cigarettes, cigars, smokeless tobacco and nearly all e-cigarettes contain nicotine The tobacco industry continuously develops and markets new nicotine-containing products
  • Nicotine | Tobacco, Addiction, Poison | Britannica
    Nicotine is the chief addictive ingredient in the tobacco used in cigarettes, cigars, and snuff In its psychoactive effects, nicotine is a unique substance with a biphasic effect; when inhaled in short puffs it has a stimulant effect, but when smoked in deep drags it can have a tranquilizing effect
  • Nicotine - Stanford University
    Nicotine is the primary addictive chemical in tobacco and has various positive effects on the body, such as decreasing appetite to control weight gain, improving mood, and increasing the ability to focus
  • Nicotine dependence - Symptoms and causes - Mayo Clinic
    Nicotine is the chemical in tobacco that keeps you smoking tobacco Nicotine reaches the brain within seconds of taking a puff In the brain, nicotine increases the release of brain chemicals called neurotransmitters These brain chemicals help control mood and behavior





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