: any of various mucoproteins that occur especially in secretions of mucous membranes
Examples of mucin in a Sentence
Recent Examples on the Web
Bring hydration to your pores with these beauty finds that are all marked down for Labor Day, like a snail mucin sheet mask and a face powder that one PEOPLE staffer swears by.
—
Nicol Natale, People.com, 27 Aug. 2025
The formula is a whopping 81% prickly pear mucin, derived from both the prickly pear cactus stem (a source of skin barrier-supporting hydration) and the antioxidant-rich fruit.
—Karina Hoshikawa, Refinery29, 26 Aug. 2025
Just that it’s formulated with 25% snail mucin, which boosts skin moisture and radiance and calms and softens the complexion.
—Katie Decker-Jacoby, StyleCaster, 8 July 2025
But while the brand may be responsible for popularizing the ingredient in the 21st century, snail mucin was introduced to the beauty world decades before.
—Kaleigh Werner, Footwear News, 1 July 2025
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Nicol Natale, People.com, 27 Aug. 2025
The formula is a whopping 81% prickly pear mucin, derived from both the prickly pear cactus stem (a source of skin barrier-supporting hydration) and the antioxidant-rich fruit.
—Karina Hoshikawa, Refinery29, 26 Aug. 2025
Just that it’s formulated with 25% snail mucin, which boosts skin moisture and radiance and calms and softens the complexion.
—Katie Decker-Jacoby, StyleCaster, 8 July 2025
But while the brand may be responsible for popularizing the ingredient in the 21st century, snail mucin was introduced to the beauty world decades before.
—Kaleigh Werner, Footwear News, 1 July 2025
See All Example Sentences for mucin
Cite this Entry
“Mucin.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/mucin. Accessed 5 Sep. 2025.
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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