nicotine
noun
nic·o·tine
ˈni-kə-ˌtēn 
: 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
Medical research has shown that common side effects of GLP-1s are dampened cravings for alcohol, nicotine and opioids.
—
Melissa Ruggieri, USA Today, 30 Dec. 2025
Ammonia, which can cause nose, throat and respiratory tract irritation, is often added to tobacco products to increase the body’s absorption of nicotine and make tobacco more additive, the US Food and Drug Administration states on its website.
—Sandee Lamotte, CNN Money, 29 Dec. 2025
For instance, mouse fathers exposed to nicotine sire male pups with livers that are good at disarming not just nicotine but cocaine and other toxins as well.
—Ivan Amato, Quanta Magazine, 22 Dec. 2025
Yet on tobacco and nicotine, some want to move Massachusetts in the opposite direction.
—Peter Brennan, Boston Herald, 17 Dec. 2025
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Melissa Ruggieri, USA Today, 30 Dec. 2025
Ammonia, which can cause nose, throat and respiratory tract irritation, is often added to tobacco products to increase the body’s absorption of nicotine and make tobacco more additive, the US Food and Drug Administration states on its website.
—Sandee Lamotte, CNN Money, 29 Dec. 2025
For instance, mouse fathers exposed to nicotine sire male pups with livers that are good at disarming not just nicotine but cocaine and other toxins as well.
—Ivan Amato, Quanta Magazine, 22 Dec. 2025
Yet on tobacco and nicotine, some want to move Massachusetts in the opposite direction.
—Peter Brennan, Boston Herald, 17 Dec. 2025
See All Example Sentences for nicotine
Cite this Entry
“Nicotine.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/nicotine. Accessed 5 Jan. 2026.
Copy CitationKids Definition
nicotine
noun
nic·o·tine
ˈnik-ə-ˌtēn
: a poisonous substance found in tobacco and used as an insecticide
Medical Definition
nicotine
noun
nic·o·tine
ˈnik-ə-ˌtēn
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