fibrinogen

American  

[fahy-brin-uh-juhn] / faɪˈbrɪn ə dʒən /

noun

Biochemistry.

1. a globulin occurring in blood and yielding fibrin in blood coagulation.

---

fibrinogen British  

/ ˌfaɪbrɪnəʊˈdʒɛnɪk, ˌfaɪbrɪˈnɒdʒənəs, fɪˈbrɪnədʒən /

noun

1. a soluble protein, a globulin, in blood plasma, converted to fibrin by the action of the enzyme thrombin when blood clots

---

fibrinogen Scientific  

/ fī-brĭn′ə-jən /

1. A protein in the blood plasma that is essential for the coagulation of blood. It is converted to fibrin by the action of thrombin in the presence of calcium ions.

---

Other Word Forms

• fibrinogenic
  adjective

Etymology

Origin of fibrinogen

First recorded in 1870–75; fibrino- + -gen

Compare meaning

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

• fibrin vs. fibrinogen

Example Sentences

See Examples For:

fibrinogen

"It takes a larger amount of Aβ or fibrinogen alone to cause serious damage in the Alzheimer's brain," says Erin Norris, research associate professor in the laboratory of Sidney Strickland at Rockefeller.

From Science Daily ● Oct. 22, 2025

Earlier work from the group showed that Aβ binds to fibrinogen and connected that interaction to the progression of Alzheimer's disease.

From Science Daily ● Oct. 22, 2025

Chitosan is already used in some hemostats: its positively charged surface is known to strongly attract negatively charged platelets and fibrinogen, the two major components of a blood clot.

From Science Daily ● Jan. 22, 2024

But elevated fibrinogen seemed to correlate with brain fog whether or not a person previously had COVID, which indicated that cognitive problems caused by other conditions may also involve fibrinogen.

From Scientific American ● Sep. 1, 2023

Serum, for instance, very quickly loses its power of inducing clotting in fibrinogen solutions.

From Encyclopaedia Britannica, 11th Edition, Volume 4, Slice 1 "Bisharin" to "Bohea" by Various