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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 [16]
  • What Nicotine Is and How It Affects Your Body - Verywell Health
    Nicotine, a highly addictive stimulant found primarily in tobacco plants, plays a significant role in smoking addiction due to its effects on the brain's pleasure and reward systems
  • Nicotine Is Why Tobacco Products Are Addictive | FDA
    Nicotine is what keeps people using tobacco products However, it’s the thousands of chemicals contained in tobacco and tobacco smoke that make tobacco use so deadly
  • 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: Facts, effects, and dependency - Medical News Today
    Nicotine is a highly addictive substance found in tobacco products and can be the reason many people consume tobacco It may cause side effects such as dizziness, racing heartbeat, and headaches
  • 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
  • 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 - American Lung Association
    Nicotine is the addictive drug in tobacco products Cigarettes, cigars, smokeless tobacco and nearly all e-cigarettes contain nicotine
  • U. S. Smoking Hits Record Low as Vaping, Pouches Rise
    U S cigarette smoking hits a record low as vaping stays widespread and nicotine pouch use grows, reshaping public health and tobacco policy
  • 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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