: any of various mucoproteins that occur especially in secretions of mucous membranes
mucinous adjective

Examples of mucin in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
The serum has a lightweight, salmon-pink gel texture that goes on clear, with a slightly slippery consistency that reminds me of snail mucin. — Alanna Martine Kilkeary, Glamour, 26 Oct. 2026 These under-eye saviors revitalize tired-looking eyes with eight firming peptides and snail mucin to deliver a deep boost of hydration. — Vivien Lee, InStyle, 15 Oct. 2026 CosRx’s Advanced Snail 96 Mucin Power Essence is the product most credited with turning snail mucin from an eyebrow-raising ingredient into a full-on K-beauty staple. — Lauren Jarvis-Gibson, Sacbee.com, 26 Aug. 2026 Snail mucin has already made the jump; mung bean, green tangerine and adenosine-and-peptide blends are the next candidates for mainstream naming recognition. — Lauren Jarvis-Gibson, Miami Herald, 26 Aug. 2026 See All Example Sentences for mucin

Word History

Etymology

International Scientific Vocabulary muc-

First Known Use

1838, in the meaning defined above

Time Traveler
The first known use of mucin was in 1838

Browse Nearby Words

Cite this Entry

“Mucin.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/mucin. Accessed 31 Oct. 2026.

Medical Definition

: 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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