What does fibrose mean?
Fibrose means to become fibrous — specifically, to undergo fibrosis, the process by which normal tissue is progressively replaced by stiff fibrous connective tissue, usually scar tissue. The verb is used mainly by clinicians and biomedical researchers: a chronically inflamed liver may fibrose until it hardens into cirrhosis, while damaged lungs may fibrose until they can no longer transfer oxygen efficiently. Because fibrous tissue cannot perform the specialised work of the original cells, fibrose almost always signals irreversible decline in an organ's function, giving the word a distinctly grave connotation in medical settings. Derived from Latin fibra, meaning fibre, it belongs to a family of terms including fibrosis, fibrotic, and fibrous that describe this same scarring process at different stages or degrees. Though rarely encountered outside medicine, fibrose is worth knowing because it names one of the body's most consequential responses to chronic injury: healing gone too far, where repair itself becomes the source of damage.
To undergo fibrosis; to become fibrous through the formation of fibrous connective tissue, usually following chronic injury or inflammation.
"If the inflammation persists, the lung tissue will eventually fibrose."
Usually intransitive; conjugated like other -ose verbs (fibroses, fibrosing, fibrosed).
Relating to, consisting of, or characterized by fibrous or fibrotic tissue.
"Biopsy results revealed extensive fibrose change throughout the affected lobe."
This attributive use is less common than 'fibrous' or 'fibrotic' and appears mostly in medical literature.
Your organs can literally turn to scar tissue — when doctors say a liver or lung 'fibroses', they mean healthy cells are being replaced by stiff, non-working fibre.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of fibrose
Fibrose derives from the Latin noun fibra, meaning 'fibre' or 'filament', which entered scientific vocabulary across Europe in the early modern period as anatomists described thread-like bodily structures. English formed both the adjective 'fibrous' and the noun 'fibrosis' from this root in the nineteenth century, as pathologists characterised diseases by their fibrous changes. The verb 'fibrose', along with the related adjective use, emerged from this same tradition, allowing clinicians to describe the active process by which tissue becomes fibrotic. Its cognates include 'fiber', 'fibroblast', and 'fibrosis', all traceable to the shared Latin root fibra.
Related word forms
How fibrose is actually used
Fibrose is a technical term used almost exclusively in medical and biological contexts. It functions chiefly as an intransitive verb (tissue fibroses) but also appears attributively as an adjective meaning fibrous or fibrosis-related (as in 'fibrose tissue' or 'cystic fibrose change'). It carries a clinical, generally negative connotation, since fibrosis implies permanent loss of organ function.
Easily confused with fibrose
Fibrose describes the process of becoming fibrous or scarred, while a fibroid is a benign fibrous tumour, most commonly of the uterus.
Fibrose refers to scarring with fibrous tissue, whereas fibrin relates to the blood-clotting protein fibrin — an entirely different substance and process.