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.
Take the nicotine in a cigarette, which has the dubious honor of being named after Jean Nicot, the person who introduced tobacco to France. Daniel Seifert, JSTOR Daily, 5 Feb. 2025 Many cancer centers have free smoking cessation services, which may include behavioral counseling and nicotine replacement therapies. Lana Barhum, Verywell Health, 3 Feb. 2025 Ways to Protect Your Heart Health in Midlife The American Heart Association (AHA) defines eight components of cardiovascular health: diet, physical activity, nicotine exposure, sleep health, cholesterol level, blood sugar, blood pressure and weight/BMI. Lauryn Higgins, Flow Space, 3 Feb. 2025 Though nicotine pouches are seen as a less destructive alternative to cigarettes, the American Lung Association stated that nicotine — a highly addictive chemical — is harmful in any form. Rachel Raposas, People.com, 31 Jan. 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 16 Feb. 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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