fibrin

American  

[fahy-brin] / ˈfaɪ brɪn /

noun

1. the insoluble protein end product of blood coagulation, formed from fibrinogen by the action of thrombin in the presence of calcium ions.

2. Botany. a fibrinlike substance found in some plants; gluten.

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fibrin British  

/ ˈfɪbrɪn /

noun

1. a white insoluble elastic protein formed from fibrinogen when blood clots: forms a network that traps red cells and platelets

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fibrin Scientific  

/ fī′brĭn /

1. A fibrous protein produced by the action of thrombin on fibrinogen and essential to the coagulation of blood. Fibrin works by forming a fibrous network in which blood cells become trapped, thereby producing a clot.

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Other Word Forms

• fibrinous adjective

Etymology

Origin of fibrin

First recorded in 1790–1800; fibr- + -in ²

Compare meaning

How does fibrin compare to similar and commonly confused words? Explore the most common comparisons:

• fibrin vs. fibrinogen

Example Sentences

Its amino acid sequence differs from gyroxine, a toxin taken directly from rattlesnake venom and used in fibrin sealant production.

From Science Daily • Nov. 18, 2025

The scientists leveraged prior research from Gladstone investigator Katerina Akassoglou, PhD, who discovered that a blood-clotting protein called fibrin creates a cascade of toxic effects when it leaks into the brain through damaged blood vessels.

From Science Daily • Nov. 26, 2024

For patients who are seeking a youthful refresh, she and her nurses first suggest bio-stimulating treatments like platelet-rich fibrin matrix.

From Los Angeles Times • Jul. 11, 2024

As one clotting factor is activated, it activates the next factor in sequence until a fibrin clot is achieved.

From Textbooks • Jun. 9, 2022

Croupous membrane, according to him, is formed by the migration of numerous white blood-globules through the walls of the vessels in the mucous membrane, and by a direct formation of fibrin from the transuded plasma.

From A System of Practical Medicine by American Authors, Vol. I Volume 1: Pathology and General Diseases by Various