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fibrosis

American  
[fahy-broh-sis] / faɪˈbroʊ sɪs /

noun

Pathology.
  1. the development in an organ of excess fibrous connective tissue.


fibrosis British  
/ faɪˈbrəʊsɪs /

noun

  1. the formation of an abnormal amount of fibrous tissue in an organ or part as the result of inflammation, irritation, or healing

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Etymology

Origin of fibrosis

First recorded in 1870–75; fibr- + -osis

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

Here’s the promise part: Patients treated with Insilico’s investigational drug rentosertib for idiopathic pulmonary fibrosis, an age-related lung disease, showed a decline in their biological ages.

From The Wall Street Journal Sep. 8, 2026

The study does not establish that PCE directly causes liver fibrosis, but the strong association and the increase in risk seen with higher blood concentrations suggest that environmental chemicals deserve closer scrutiny in liver research.

From Science Daily Sep. 7, 2026

The relationship between exposure and liver fibrosis became even more striking when researchers examined PCE concentrations in the blood.

From Science Daily Sep. 7, 2026

She later received a lung transplant, after suffering from pulmonary fibrosis since 2018.

From BBC Aug. 29, 2026

“But if I do, it doesn’t change anything for us, Will. It makes it worse,” I say, knowing that new lungs won’t rid me of cystic fibrosis.

From "Five Feet Apart" by Rachael Lippincott

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