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

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Example Sentences

Recent Examples on the Web Le Roy was ultimately diagnosed with constrictive bronchiolitis, fibrosis of the lungs, and toxic encephalopathy. Kaiser Health News, oregonlive, 10 Aug. 2022 In his new research, Epstein reversed fibrosis by re-engineering cells, as has been done with a successful blood cancer treatment called CAR-T. Karen Weintraub, USA TODAY, 7 Jan. 2022 Its candidate drug to treat idiopathic pulmonary fibrosis was the first to be both discovered and designed using AI, and is currently in Phase 1 trials. Calum Chace, Forbes, 6 June 2022 Insilico already has one A.I.-designed drug in initial human clinical trials, a compound designed to treat the chronic lung disease idiopathic pulmonary fibrosis. Jeremy Kahn, Fortune, 27 May 2022 Build-up of the disease also causes fibrosis and endometriomas – small, tumour-like clusters of endometriosis – which can interfere with the functions of organs in the pelvis. Lucia Osborne-crowley,, 26 July 2022 Also known as long Covid syndrome, it is characterized by extreme fatigue, low mood, pulmonary fibrosis, shortness of breath, insomnia, diabetes, and memory issues, among other complications. Anuradha Varanasi, Forbes, 26 June 2022 Or tissue damage from the infection or treatment may be lingering or turning into fibrosis or chronic disease. Quanta Magazine, 21 June 2022 In 2008, Binale began experiencing shortness of breath and was later diagnosed with pulmonary fibrosis, a chronic lung disease caused by exposure to certain types of dust that has since worsened and now requires him to be on oxygen at all times. Zak Podmore, The Salt Lake Tribune, 27 June 2022 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'fibrosis.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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Word History


New Latin

First Known Use

1873, in the meaning defined above

Time Traveler
The first known use of fibrosis was in 1873

Dictionary Entries Near fibrosis

Cite this Entry

“Fibrosis.” Dictionary, Merriam-Webster, Accessed 28 Sep. 2022.

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Medical Definition



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

More from Merriam-Webster on fibrosis

Last Updated: 14 Sep 2022

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