mu·​cin ˈmyü-sᵊn How to pronounce mucin (audio)
: any of various mucoproteins that occur especially in secretions of mucous membranes
ˈmyü-sᵊn-əs How to pronounce mucin (audio)

Example Sentences

Recent Examples on the Web Snail mucin has some great benefits, like locking in moisture, diminishing fine lines and wrinkles, giving your skin some major glow, and soothing irritation. Danielle Tullo, Seventeen, 9 Feb. 2023 Repeats with a lot of proline, threonine and serine transform a typical protein to a mucin because of the polypeptide structure that is formed. Coren Walters-stewart, Discover Magazine, 18 Oct. 2022 The Cosrx Advanced Snail 96 Mucin Power Essence is a hit on TikTok all due to its acne-reducing star ingredient, snail mucin. Jennifer Hussein, Allure, 6 Jan. 2023 Give dry and dull winter skin a boost with the moisture-retaining power of snail mucin. Sarah Hoffmann, Allure, 8 Nov. 2022 Powered by 96 percent snail mucin, this essence boasts a uniquely slimey texture that instantly hydrates and plumps the skin sans any sticky residue. Tiffany Dodson, Harper's BAZAAR, 30 Dec. 2022 The mucin then detaches from the membrane of the cell, carrying the would-be invader along with it into the acidic gastric juice. Diana Kwon, Discover Magazine, 9 July 2019 Further investigation, however, revealed that these mucin genes do have relatives after all. Omer Gokcumen, The Conversation, 26 Aug. 2022 The serum is made with mucin, a bodily secretion of snails (its retrieval isn't harmful to snails, according to the brand) and may help treat cystic acne, boost elasticity, and replenish dry skin over time. Nicol Natale, Peoplemag, 25 Nov. 2022 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'mucin.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Word History


International Scientific Vocabulary muc-

First Known Use

1838, in the meaning defined above

Time Traveler
The first known use of mucin was in 1838

Dictionary Entries Near mucin

Cite this Entry

“Mucin.” Dictionary, Merriam-Webster, Accessed 30 Mar. 2023.

Medical Definition


mu·​cin ˈmyüs-ᵊn How to pronounce mucin (audio)
: 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

More from Merriam-Webster on mucin

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