• synonyms


[fahy-brin-uh-juh n]
noun Biochemistry.
  1. a globulin occurring in blood and yielding fibrin in blood coagulation.
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Origin of fibrinogen

First recorded in 1870–75; fibrino- + -gen
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for fibrinogen

Historical Examples

  • Clotting; in the blood, the result of fibrinogen changing to fibrin.

    Surgery, with Special Reference to Podiatry

    Maximilian Stern

  • The fibrinogen levels of all four animals were normal, indicating that there was no acute or chronic inflammation in progress.

  • Fibrinogen: a proteid substance of the blood and other body fluids, concerned in the production of fibrin.

  • Into this special class fall myosin (of the muscles), fibrinogen (of the blood) and vitellin (of egg yolk).

    Animal Proteins

    Hugh Garner Bennett

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

British Dictionary definitions for fibrinogen


  1. a soluble protein, a globulin, in blood plasma, converted to fibrin by the action of the enzyme thrombin when blood clots
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Derived Formsfibrinogenic (ˌfaɪbrɪnəʊˈdʒɛnɪk) or fibrinogenous (ˌfaɪbrɪˈnɒdʒənəs), adjective
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

fibrinogen in Medicine


  1. A protein in the blood plasma that is essential for the coagulation of blood and is converted to fibrin by thrombin and ionized calcium.factor I
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

fibrinogen in Science


  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.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.