mucin

American  

[myoo-sin] / ˈmyu sɪn /

noun

Biochemistry.

1. any of a class of glycoproteins found in saliva, gastric juice, etc., that form viscous solutions and act as lubricants or protectants on external and internal surfaces of the body.

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mucin British  

/ ˈmjuːsɪn /

noun

1. biochem any of a group of nitrogenous mucoproteins occurring in saliva, skin, tendon, etc, that produce a very viscous solution in water

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Other Word Forms

Derived Forms

• mucinous
  adjective
• mucinoid
  adjective

Etymology

Origin of mucin

First recorded in 1825–35; muc- + -in ²

Example Sentences

They dissect ingredient lists, film unboxings and record "Get Ready With Me" videos built around ideas such as "glass skin", sheet masks and, of course, snail mucin.

From BBC • Jan. 2, 2026

A second genetic region included several mucin genes that help form the gut's protective mucus layer and was associated with bacteria from the Firmicutes group.

From Science Daily • Dec. 23, 2025

After a snail mucus skin care boom in South Korea, the product—also referred to as snail mucin or secretion—was widely shared on social media.

From National Geographic • Jan. 8, 2024

One particular item took off — a snail mucin essence from popular Korean brand COSRX.

From Los Angeles Times • Dec. 3, 2023

Some of the dried mucin was then soaked in water for two days, and little cubes of the proper size were placed on three leaves.

From Insectivorous Plants by Darwin, Charles