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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The researchers tested lawsone on human and mouse HSCs, as well as fibroblast cells, which produce collagen and other fibers.
—
New Atlas, 30 Oct. 2025
Peptides support collagen and elasticity, keeping the delicate under-eye area smooth.
—Christa Joanna Lee, Allure, 30 Oct. 2025
Manufacturers extract collagen, the fibrous protein that connects muscles, bones and skins, and then turn it into gelatin, according to MedicalNews Today.
—Greta Cross, USA Today, 30 Oct. 2025
The signature ingredient, however, is the brand’s plum complex—the sister founders of Le Prunier use materials from their family’s century-old plum farm—to support collagen production, skin barrier health, and hydration without congesting pores.
—Emily Orofino, Vogue, 30 Oct. 2025
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New Atlas, 30 Oct. 2025
Peptides support collagen and elasticity, keeping the delicate under-eye area smooth.
—Christa Joanna Lee, Allure, 30 Oct. 2025
Manufacturers extract collagen, the fibrous protein that connects muscles, bones and skins, and then turn it into gelatin, according to MedicalNews Today.
—Greta Cross, USA Today, 30 Oct. 2025
The signature ingredient, however, is the brand’s plum complex—the sister founders of Le Prunier use materials from their family’s century-old plum farm—to support collagen production, skin barrier health, and hydration without congesting pores.
—Emily Orofino, Vogue, 30 Oct. 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 4 Nov. 2025.
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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