Definition of nicotine in English:

nicotine

noun

  • A toxic colorless or yellowish oily liquid that is the chief active constituent of tobacco. It acts as a stimulant in small doses, but in larger amounts blocks the action of autonomic nerve and skeletal muscle cells. Nicotine is also used in insecticides.

    • ‘I understand these results are based on the amount of nicotine found in the bloodstream.’
    • ‘Despite the risks, marijuana was nowhere near as addictive as nicotine, he said.’
    • ‘That the chemical nicotine is why people smoke has been known for more than 60 years.’
    • ‘Even in adolescence, many smokers are addicted to nicotine and would like to stop smoking.’
    • ‘He took out a cigarette and lighted it, taking his time to draw in the smoke and nicotine.’
    • ‘These patches contain nicotine and cost roughly the same as cigarettes do.’
    • ‘These laws offer a promising framework for the regulation of nicotine, including tobacco products.’
    • ‘The nicotine in tobacco smoke causes both physical and psychological dependence.’
    • ‘My experience with many smokers has led me to believe that nicotine is not the evil thing it is made out to be.’
    • ‘Caffeine, for example, is a powerful stimulant, while the nicotine in cigarettes is a sedative.’
    • ‘It blocks the effects of nicotine but does not precipitate withdrawal symptoms.’
    • ‘I have every sympathy for those smokers who continue to be addicted to nicotine.’
    • ‘Tar and nicotine travels over the placenta and in large amounts will kill the fetus.’
    • ‘While a person is smoking, nicotine reaches the brain faster than drugs that enter the body directly through the veins.’
    • ‘At the end of the day, tar is far more dangerous than cannabis and nicotine is far more addictive than cannabis.’
    • ‘Heavy doses of sugar and caffeine can hook you just as easily as nicotine or crack cocaine.’
    • ‘The experts at the service explain just how much nicotine is going into you, how much is in one cigarette and why we become addicted.’
    • ‘When you stop smoking, the withdrawal from nicotine can be as difficult as withdrawing from heroin or cocaine.’
    • ‘Non-smokers who are exposed to smoke absorb nicotine and other compounds just as smokers do.’
    • ‘Many of them do themselves further harm by smoking, because nicotine suppresses appetite.’

Origin

Early 19th century: from French, from nicotiana + -ine.

Pronunciation:

nicotine

/ˈnikəˌtēn/