fibroblast

noun

fi·​bro·​blast ˈfī-brə-ˌblast How to pronounce fibroblast (audio) ˈfi- How to pronounce fibroblast (audio)
: a connective-tissue cell of mesenchymal origin that secretes proteins and especially molecular collagen from which the extracellular fibrillar matrix of connective tissue forms
fibroblastic
ˌfī-brə-ˈbla-stik How to pronounce fibroblast (audio) ˌfi- How to pronounce fibroblast (audio)
adjective

Examples of fibroblast in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
During perimenopause, as estrogen plummets, that production pathway goes into hyperdrive, which quickly fatigues the fibroblasts, cells in the connective tissue tasked with making collagen. — Maggie Ryan, Flow Space, 1 Sep. 2026 Near-infrared light (around 830 nm) penetrates even deeper, affecting fibroblasts, circulation, and tissue repair, and is frequently paired with red light for greater benefits than either alone. — Pooja Mistry, Forbes.com, 31 July 2026 Platelets in the blood form clots, white cells are summoned, dead cells are cleared away, and a cascade of chemical signals sounds the alarm to draw in units known as fibroblasts. — Mike McRae 28, New Atlas, 28 June 2026 Remove fibroblasts from a petri dish, and skin stem cells struggle to grow. — Peter Jurich, Hartford Courant, 22 June 2026 See All Example Sentences for fibroblast

Word History

Etymology

International Scientific Vocabulary

First Known Use

1873, in the meaning defined above

Time Traveler
The first known use of fibroblast was in 1873

Phrases Containing fibroblast

Rhymes for fibroblast

See All Rhymes for fibroblast

Browse Nearby Words

fibrinopeptide
fibroblast
fibroblast growth factor
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Cite this Entry

“Fibroblast.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/fibroblast. Accessed 7 Sep. 2026.

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Medical 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
fibroblastic
ˌfīb-rə-ˈblas-tik How to pronounce fibroblast (audio) ˌfib- How to pronounce fibroblast (audio)
adjective

More from Merriam-Webster on fibroblast

Britannica.com: Encyclopedia article about fibroblast

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