fibrosis

American

[fahy-broh-sis] / faɪˈbroʊ sɪs /

noun

Pathology.

the development in an organ of excess fibrous connective tissue.

fibrosis British

/ faɪˈbrəʊsɪs, faɪˈbrɒtɪk /

noun

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

Derived Forms

fibrotic

adjective

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.

Princess Mette-Marit, 52, is suffering from pulmonary fibrosis, and her doctors last week placed her on a waiting list for a lung transplant, saying her condition had declined significantly in recent months.

From BBC • Jun. 10, 2026

Scarring, or fibrosis, leaves the usually stretchy organ tight and constricted, meaning it is less able to fill with and hold urine.

From BBC • Jun. 4, 2026

Diagnosed years ago with pulmonary fibrosis, he was 95.

From Los Angeles Times • May 26, 2026

Throughout his career, chronic dental problems had impacted his playing, but now pulmonary fibrosis had made playing impossible.

From The Wall Street Journal • May 26, 2026

Mom explained that she had pulmonary fibrosis, and it was getting worse, but I was seven years old, and pulmonary fibrosis were two big, grown-up words I didn’t understand.

From "Courage to Soar" by Simone Biles

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023