Definition of nicotine in English:

nicotine

noun

mass noun
  • A toxic colourless or yellowish oily liquid which 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.

    An alkaloid; chemical formula: C₁₀H₁₄N₂

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

Origin

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

Pronunciation

nicotine

/ˈnɪkətiːn/