: any of various mucoproteins that occur especially in secretions of mucous membranes
Examples of mucin in a Sentence
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Three decades later, that secret arrived on American shores like a tsunami—sheet masks, snail mucin, toner pads, pimple patches lining every retail shelf.
—
David Yi, Allure, 23 Feb. 2026
Too little mucin means a drier and more constipation-prone colon.
—Jackie Flynn Mogensen, Scientific American, 19 Feb. 2026
The texture is exceptionally satisfying—its sticky, almost snail mucin-like feel sinks instantly into skin.
—Kiana Murden, Vogue, 29 Jan. 2026
My day always starts in the bathroom brushing my teeth and doing my skincare (CosRX snail mucin, Vanicream moisturizer, and Innisfree sunscreen).
—R29 Team, Refinery29, 28 Jan. 2026
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David Yi, Allure, 23 Feb. 2026
Too little mucin means a drier and more constipation-prone colon.
—Jackie Flynn Mogensen, Scientific American, 19 Feb. 2026
The texture is exceptionally satisfying—its sticky, almost snail mucin-like feel sinks instantly into skin.
—Kiana Murden, Vogue, 29 Jan. 2026
My day always starts in the bathroom brushing my teeth and doing my skincare (CosRX snail mucin, Vanicream moisturizer, and Innisfree sunscreen).
—R29 Team, Refinery29, 28 Jan. 2026
See All Example Sentences for mucin
Cite this Entry
“Mucin.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/mucin. Accessed 1 Mar. 2026.
Copy CitationMedical Definition
mucin
noun
mu·cin
ˈmyüs-ᵊn 
: any of a group of mucoproteins that are found in various human and animal secretions and tissues (as in saliva, the lining of the stomach, and the skin) and that are white or yellowish powders when dry and viscid when moist
gastric mucin
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