[ throm-bin ]
/ ˈθrɒm bɪn /

noun Biochemistry.

an enzyme of the blood plasma that catalyzes the conversion of fibrinogen to fibrin, the last step of the blood clotting process.

Origin of thrombin

First recorded in 1895–1900; thromb(us) + -in2 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for thrombin

British Dictionary definitions for thrombin


/ (ˈθrɒmbɪn) /


biochem an enzyme that acts on fibrinogen in blood causing it to clot

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

Medicine definitions for thrombin


[ thrŏmbĭn ]


An enzyme in blood formed from prothrombin that facilitates blood clotting by reacting with fibrinogen to form fibrin.thrombase

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Science definitions for thrombin


[ thrŏmbĭn ]

An enzyme in blood that catalyzes the conversion of fibrinogen to fibrin and is essential to the coagulation of blood.

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