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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: 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 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
  • The Hidden Healing Power of Nicotine - Psychology Today
    Nicotine works by binding to receptors in the brain called “nicotinic acetylcholine receptors ” These receptors are important in learning, memory, attention, and neuroprotection When nicotine
  • 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
  • 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 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





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