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Definitions

mucus

[myoo-kuhs] / ˈmyu kəs /
NOUN
secretion
Synonyms




Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Born with cystic fibrosis, a genetic disorder that causes mucus to become thick and sticky, she has just 9% lung function.

From BBC • Mar. 24, 2026

CF is a genetic condition that can particularly affect someone's digestive system, as well as their lungs, because their body produces a thick, sticky mucus that coats the organs.

From BBC • Mar. 20, 2026

"Intelectin-2 first reinforces the mucus barrier itself, and then if that barrier is breached, it can control the bacteria and restrict their growth," Kiessling says.

From Science Daily • Mar. 16, 2026

This species produces especially sticky mucus, which is related to its diet as a predator of arthropods.

From Science Daily • Feb. 14, 2026

I breathe in again, though it definitely makes me feel like the hot dog I ate earlier is going to join ump guy’s blob of mucus beside me.

From "Fast Pitch" by Nic Stone