nicotine

noun

nic·​o·​tine ˈni-kə-ˌtēn How to pronounce nicotine (audio)
: a poisonous alkaloid C10H14N2 that is the chief active principle of tobacco and is used as an insecticide

Examples of nicotine in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
In 2016, nicotine pouches were introduced to the U.S. market, which are microfiber sachets containing nicotine but no tobacco leaf and have gained in popularity in recent years. Drake Bentley, jsonline.com, 22 July 2025 Researchers analyzed calls to the National Poison Data System related to accidental nicotine ingestions among children younger than 6 years old. Ashley J. Dimella, FOXNews.com, 18 July 2025 The new guidelines are more comprehensive, such as including avoiding secondhand smoke, vaping and nicotine products in the not smoking factor and pointing people to the Mediterranean diet or DASH diet under the healthy eating metric, Makarem said. Madeline Holcombe, CNN Money, 16 July 2025 Robert Michael / dpa / Getty Images Most of the incidents have occurred in homes and usually involved nicotine pouches, like the wildly popular Zyn. Jana Kasperkevic, NBC news, 14 July 2025 See All Example Sentences for nicotine

Word History

Etymology

French, from New Latin nicotiana

First Known Use

1817, in the meaning defined above

Time Traveler
The first known use of nicotine was in 1817

Cite this Entry

“Nicotine.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/nicotine. Accessed 29 Jul. 2025.

Kids Definition

nicotine

noun
nic·​o·​tine ˈnik-ə-ˌtēn How to pronounce nicotine (audio)
: a poisonous substance found in tobacco and used as an insecticide

Medical Definition

nicotine

noun
nic·​o·​tine ˈnik-ə-ˌtēn How to pronounce nicotine (audio)
: a poisonous alkaloid C10H14N2 that is the chief active principle of tobacco and that is used as an insecticide and is sometimes used in smoking cessation aids

Note: Trademarks for nicotine include Nicoderm, Nicorette, and Nicotrol.

More from Merriam-Webster on nicotine

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