fibrosis

noun

fi·​bro·​sis fī-ˈbrō-səs How to pronounce fibrosis (audio)
: a condition marked by increase of interstitial fibrous tissue
fibrotic adjective

Examples of fibrosis in a Sentence

Recent Examples on the Web
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Pulmonary fibrosis, a thickening and damaging of the lungs, would eventually force him into retirement. CBS News, 26 May 2026 However, in 2012, Rollins played what would be his last concert and, two years later, revealed his retirement from music due to pulmonary fibrosis. Daniel Kreps, Rolling Stone, 25 May 2026 Pulmonary fibrosis, a thickening and damaging of the lungs, would eventually force him into retirement. ABC News, 25 May 2026 The hearts of these sharks showed severe fibrosis, which happens when scar tissue accumulates and causes stiffness that can impair pumping over time, the researchers wrote. Jeanna Bryner, Scientific American, 4 May 2026 See All Example Sentences for fibrosis

Word History

Etymology

New Latin

First Known Use

1873, in the meaning defined above

Time Traveler
The first known use of fibrosis was in 1873

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Cite this Entry

“Fibrosis.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/fibrosis. Accessed 27 May. 2026.

Kids Definition

fibrosis

noun
fi·​bro·​sis fī-ˈbrō-səs How to pronounce fibrosis (audio)
: an abnormal bodily condition in which increased amounts of fibrous tissue form in other tissues compare cystic fibrosis

Medical Definition

fibrosis

noun
fi·​bro·​sis fī-ˈbrō-səs How to pronounce fibrosis (audio)
plural fibroses -ˌsēz How to pronounce fibrosis (audio)
: a condition marked by increase of interstitial fibrous tissue : fibrous degeneration

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