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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These days, the healthy beverage of choice is more likely to be a protein-and-collagen smoothie or a matcha latte whipped with some sort of non-dairy milk.
—
Lorena Meouchi, Vogue, 19 Sep. 2025
As an ingredient, collagen is growing into a dominant category, especially among women who demand visible, feelable results.
—Fairchild Studio, Footwear News, 19 Sep. 2025
The lotion is rich in anti-aging ingredients, such as collagen to add plumpness and hyaluronic acid to boost hydration and radiance.
—Clara McMahon, PEOPLE, 19 Sep. 2025
Skin prep was key—hydrating masks from Neutrogena and Korean sheet masks with collagen or retinol kept her complexion plump before application.
—Larry Stansbury, Essence, 19 Sep. 2025
See All Example Sentences for collagen
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Lorena Meouchi, Vogue, 19 Sep. 2025
As an ingredient, collagen is growing into a dominant category, especially among women who demand visible, feelable results.
—Fairchild Studio, Footwear News, 19 Sep. 2025
The lotion is rich in anti-aging ingredients, such as collagen to add plumpness and hyaluronic acid to boost hydration and radiance.
—Clara McMahon, PEOPLE, 19 Sep. 2025
Skin prep was key—hydrating masks from Neutrogena and Korean sheet masks with collagen or retinol kept her complexion plump before application.
—Larry Stansbury, Essence, 19 Sep. 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 20 Sep. 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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