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.
Rather than strictly drinks and snacks, the tech company Palantir began stocking nicotine pouches as a job perk, hoping to increase workers’ focus and productivity. Devika Rao, TheWeek, 20 Mar. 2026 The small disposable sachets of nicotine salt and other chemicals can now be found almost everywhere — and that's part of the problem. Pilar Melendez, NBC news, 18 Mar. 2026 About 86% of poisoning calls related to e-cigarettes and liquid nicotine in 2025 were for children under 5 years old, Campbell said. Gina Lee Castro, jsonline.com, 13 Mar. 2026 But what about nicotine products like pouches and patches? Erica Sweeney, EverydayHealth.com, 11 Mar. 2026 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 28 Mar. 2026.

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.

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