triclosan
noun
tri·clo·san
trī-ˈklō-ˌsan 
: a whitish crystalline powder C12H7Cl3O2 that is a phenyl ether derivative used especially formerly as a broad-spectrum antibacterial agent
Examples of triclosan in a Sentence
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Companies can still include triclosan in over-the-counter antiseptic after going through a premarket review process with the FDA, and the chemical can be used without restriction in cosmetics and toothpastes.
—
David Faris, TheWeek, 12 June 2026
Avoid soaps that are labeled antibacterial or that contain environmental contaminants like parabens, phthalates, or triclosan.
—Brandee Gruener, Southern Living, 11 Apr. 2026
Some deodorants rely on scents and perfumes to mask odor, while others are loaded with chemicals, such as aluminum to help block sweat and triclosan to kill odor causing bacteria.
—Bestreviews, Mercury News, 8 Apr. 2026
Children exposed to the common antimicrobial triclosan were more likely to develop allergic symptoms, a new study has found.
—New Atlas, 3 July 2025
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David Faris, TheWeek, 12 June 2026
Avoid soaps that are labeled antibacterial or that contain environmental contaminants like parabens, phthalates, or triclosan.
—Brandee Gruener, Southern Living, 11 Apr. 2026
Some deodorants rely on scents and perfumes to mask odor, while others are loaded with chemicals, such as aluminum to help block sweat and triclosan to kill odor causing bacteria.
—Bestreviews, Mercury News, 8 Apr. 2026
Children exposed to the common antimicrobial triclosan were more likely to develop allergic symptoms, a new study has found.
—New Atlas, 3 July 2025
See All Example Sentences for triclosan
Cite this Entry
“Triclosan.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/triclosan. Accessed 19 Jun. 2026.
Copy CitationMedical Definition
triclosan
noun
tri·clo·san
trī-ˈklō-ˌsan
: a whitish crystalline powder C12H7Cl3O2 used especially as a broad-spectrum antibacterial agent (as in soaps, deodorants, and mouthwash)
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