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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Its triterpenes support collagen synthesis and neutralize free radicals—two actions that help soften the look of fine lines and maintain a smoother, more resilient complexion.
—
Alice Abbiadati, Vogue, 3 Jan. 2026
Exosomes have officially entered the chat through microscopic vesicles to help boost collagen and improve texture.
—Charlotte Cho, Allure, 3 Jan. 2026
There’s not a lot of meat on ham hocks, but there’s a lot of skin and bone, which after a long simmer infuse the potlikker with collagen, like a rich bone broth.
—Josh Miller, Southern Living, 30 Dec. 2025
Ceramides help strengthen the skin barrier, while collagen and hyaluronic acid plump and smooth areas prone to sagging.
—Alanna Martine Kilkeary, Glamour, 29 Dec. 2025
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Alice Abbiadati, Vogue, 3 Jan. 2026
Exosomes have officially entered the chat through microscopic vesicles to help boost collagen and improve texture.
—Charlotte Cho, Allure, 3 Jan. 2026
There’s not a lot of meat on ham hocks, but there’s a lot of skin and bone, which after a long simmer infuse the potlikker with collagen, like a rich bone broth.
—Josh Miller, Southern Living, 30 Dec. 2025
Ceramides help strengthen the skin barrier, while collagen and hyaluronic acid plump and smooth areas prone to sagging.
—Alanna Martine Kilkeary, Glamour, 29 Dec. 2025
See All Example Sentences for collagen
Cite this Entry
“Collagen.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/collagen. Accessed 5 Jan. 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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