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nicotine    音標拼音: [n'ɪkət,in]
n. 煙堿

煙鹼

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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英文字典中文字典相關資料:
  • 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 Is Why Tobacco Products Are Addictive | FDA
    Nicotine keeps people using tobacco products, even when they want to stop Learn more about nicotine and its effects from CTP
  • 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 Is Dangerous, No Matter How It’s Used - Oklahoma. gov
    Nicotine pouches and vapes are relatively new tobacco products, but they are simply the latest way to deliver an old, addictive drug — nicotine No matter how it’s used, nicotine is not safe for kids and teens, expectant moms or people who do not already use tobacco While cigarettes remain the most dangerous tobacco product, causing most tobacco-related deaths in the United States, all
  • 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 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 - American Lung Association
    Nicotine is the addictive drug in tobacco products Cigarettes, cigars, smokeless tobacco and nearly all e-cigarettes contain nicotine
  • 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 Addiction and Smoking: Health Effects and Interventions . . .
    Nicotine initially provides a calming effect; thus is used as a stress reliever and taking a smoking break during activities can also be used as a coping mechanism; however, the long term use of a stress relief method such as tobacco leads to increased stressors associated with poor health





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