collagen
noun
col·la·gen
ˈkä-lə-jən 
: any of a group of fibrous proteins that occur in vertebrates as the chief constituent of connective tissue fibrils and in bones and yield gelatin and glue upon boiling with water
Examples of collagen in a Sentence
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Reactive oxygen species, inflammation and collagen breakdown are three of the central mechanisms behind visible skin aging, which is why the finding has drawn attention beyond the lab.
—
Allison Palmer, Fort Worth Star-Telegram, 15 June 2026
When everything is starting to sag and/or ache, collagen is touted as a must-have.
—Rita Templeton, Flow Space, 15 June 2026
About 150 minutes of moderate aerobic exercise per week improves blood flow, lowers stress and supports collagen production, per the Skinspan roadmap.
—Allison Palmer
updated June 13, Miami Herald, 13 June 2026
That’s why so many of us spend money on moisturizers, retinoids, collagen powders, sunscreen, facials and anti-aging treatments that promise smoother skin and a healthier glow.
—Daryl Austin, USA Today, 13 June 2026
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Allison Palmer, Fort Worth Star-Telegram, 15 June 2026
When everything is starting to sag and/or ache, collagen is touted as a must-have.
—Rita Templeton, Flow Space, 15 June 2026
About 150 minutes of moderate aerobic exercise per week improves blood flow, lowers stress and supports collagen production, per the Skinspan roadmap.
—Allison Palmer
updated June 13, Miami Herald, 13 June 2026
That’s why so many of us spend money on moisturizers, retinoids, collagen powders, sunscreen, facials and anti-aging treatments that promise smoother skin and a healthier glow.
—Daryl Austin, USA Today, 13 June 2026
See All Example Sentences for collagen
Cite this Entry
“Collagen.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/collagen. Accessed 17 Jun. 2026.
Copy CitationKids Definition
collagen
noun
col·la·gen
ˈkäl-ə-jən
: a protein that occurs in the form of fibers, does not dissolve, is found in connective tissue, and forms glue and gelatin upon boiling with water
Medical Definition
collagen
noun
col·la·gen
ˈkäl-ə-jən
: an insoluble fibrous protein of vertebrates that is the chief constituent of the fibrils of connective tissue (as in skin and tendons) and of the organic substance of bones and yields gelatin and glue on prolonged heating with water
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