fibroblast
noun
fi·bro·blast
ˈfī-brə-ˌblast 
ˈfi-
ˈfi-
: a connective-tissue cell of mesenchymal origin that secretes proteins and especially molecular collagen from which the extracellular fibrillar matrix of connective tissue forms
Examples of fibroblast in a Sentence
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Like giving the skin a boost of essential building blocks, peptides help promote the activity of fibroblasts—the cells responsible for creating collagen and maintaining skin structure.
—
Daisy Maldonado, InStyle, 2 Apr. 2026
Long-term effects on other cell types, including fibroblasts, and on innervations and vascularization would need to be considered before considering inducing skin irritation for human applications.
—Jasmine Laws, MSNBC Newsweek, 27 Oct. 2025
Not only does the bio-ink plug the hole, but as the fibroblasts grow and reproduce, the ulcer should actually heal.
—Ben Coxworth
october 16, New Atlas, 16 Oct. 2025
Human colon cells line the inner surface, while fibroblasts embedded in the outer layer re-create the mucosal environment that supports colon function.
—Aamir Khollam, Interesting Engineering, 15 Oct. 2025
See All Example Sentences for fibroblast
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Daisy Maldonado, InStyle, 2 Apr. 2026
Long-term effects on other cell types, including fibroblasts, and on innervations and vascularization would need to be considered before considering inducing skin irritation for human applications.
—Jasmine Laws, MSNBC Newsweek, 27 Oct. 2025
Not only does the bio-ink plug the hole, but as the fibroblasts grow and reproduce, the ulcer should actually heal.
—Ben Coxworth
october 16, New Atlas, 16 Oct. 2025
Human colon cells line the inner surface, while fibroblasts embedded in the outer layer re-create the mucosal environment that supports colon function.
—Aamir Khollam, Interesting Engineering, 15 Oct. 2025
See All Example Sentences for fibroblast
Cite this Entry
“Fibroblast.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/fibroblast. Accessed 20 Apr. 2026.
Copy CitationMedical Definition
fibroblast
noun
fi·bro·blast
ˈfīb-rə-ˌblast also ˈfib-
: a connective-tissue cell of mesenchymal origin that secretes proteins and especially molecular collagen from which the extracellular fibrillar matrix of connective tissue forms
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