[ ahr-juh-neen, -nahyn, -nin ]
/ ˈɑr dʒəˌnin, -ˌnaɪn, -nɪn /

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

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. 2020

Example sentences from the Web for arginine

British Dictionary definitions for arginine

/ (ˈɑːdʒɪˌnaɪn) /


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

Medical definitions for arginine

[ ärjə-nēn′ ]


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.

Scientific definitions for arginine

[ ärjə-nēn′ ]

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.