[ahr-juh-neen, -nahyn, -nin]

noun Biochemistry.

an essential amino acid, C6H14N4O2: the free amino acid increases insulin secretion and is converted to urea in the liver by arginase. Abbreviation: Arg; Symbol: R

Nearby words

  1. argillaceous,
  2. argilliferous,
  3. argillite,
  4. argillitic,
  5. arginase,
  6. argininosuccinic acid,
  7. argininosuccinicaciduria,
  8. argive,
  9. argle,
  10. argle-bargle

Origin of arginine

First recorded in 1885–90, arginine is from the German word Arginin, a name unexplained by its originators Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for arginine

British Dictionary definitions for arginine



an essential amino acid of plant and animal proteins, necessary for nutrition and for the production of excretory urea

Word Origin for arginine

C19: from German Arginin, of uncertain origin

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 arginine




An amino acid obtained from the hydrolysis or digestion of plant and animal protein.

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

Science definitions for arginine



An amino acid that is essential for children but not for adults. Chemical formula: C6H14N4O2.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.