What does mucinous mean?
Mucinous means containing or resembling mucin, a major component of the slimy substances known as mucus. The term is especially important in biology and medicine, where it can describe mucus-rich tissue, a lesion producing abundant mucus, or a discharge with a characteristic mucus-like appearance. For example, a mucinous tumour contains or produces mucin, while mucinous tissue has a wet, gelatinous, or mucus-like quality. The word is formal and technical rather than conversational, and it is usually applied to bodily secretions, biological material, or pathological growths. It is sometimes confused with mucous, a closely related adjective meaning that something secretes or contains mucus. The more precise distinction is that mucinous points specifically to mucin or a mucoid character, whereas mucous describes a relationship to mucus more generally. Mucinous is consequently useful in technical writing but can sound unnecessarily clinical in casual contexts.
adjectiveContaining or consisting of mucin, the main glycoprotein component of mucus. In biological or medical contexts, it can also describe tissue, lesions, or secretions having a mucus-like or mucoid character.
- Containing or consisting of mucin, the main glycoprotein component of mucus; having a mucus-like or mucoid character.
"The biopsy revealed a mucinous lesion that produced abundant mucus."
"The biopsy showed a mucinous lesion that produced abundant mucus."
"The patient reported a persistent mucinous discharge from the nostril."
Mucinous is the adjective for mucin—the slippery, lubricating glycoprotein that gives mucus much of its texture.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does mucinous come from?
Mucinous was formed in English in the 17th century from mucin plus the suffix -ous, meaning “having the nature or quality of.” It belongs to a family of words derived from Latin mucus, meaning “mucus” or “moisture,” including English forms such as mucous, mucin, and mucilage. The related Latin adjective mucosus helped establish the usual English sense of “mucus-like” or “containing mucus.”
Related word forms
How mucinous is actually used
This is primarily a formal biological, medical, and scientific term. It is especially common in pathology and is not usually used in everyday speech except when describing visible mucus-like material.
Easily confused with mucinous
Mucinous specifically refers to material containing mucin or having a mucoid quality, whereas mucous more generally means secreting or containing mucus.