mucus
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mu·cus

noun \ˈmyü-kəs\

Definition of MUCUS

: a viscid slippery secretion that is usually rich in mucins and is produced by mucous membranes which it moistens and protects

Origin of MUCUS

Latin, nasal mucus; akin to Greek myxa mucus
First Known Use: 1661

mu·cus

noun \ˈmyü-kəs\   (Medical Dictionary)

Medical Definition of MUCUS

: a viscid slippery secretion that is usually rich in mucins and is produced by mucous membranes which it moistens and protects

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