- Biochemistry. a polysaccharide, occurring in various tissues, especially the liver, and having anticoagulent properties.
- Pharmacology. a commercial form of this substance, obtained from the liver and lungs of domesticated food animals, that when injected into the blood prevents coagulation: used chiefly in the treatment of thrombosis.
Origin of heparin
1915–20; < Greek hêpar the liver + -in2
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- a polysaccharide, containing sulphate groups, present in most body tissues: an anticoagulant used in the treatment of thrombosis
C20: from Greek hēpar the liver + -in
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
Word Origin and History for heparin
Online Etymology Dictionary, © 2010 Douglas Harper
- A complex organic acid that is found especially in lung and liver tissue, has a mucopolysaccharide as its active constituent, prevents platelet agglutination and blood clotting, and is used in the form of its sodium salt in the treatment of thrombosis.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
- An acidic glycosaminoglycan found especially in lung and liver tissue that prevents the clotting of blood and is used intravenously in the treatment of thrombosis and embolism.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.