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An amino acid, C6H13N3O3, originally isolated from watermelon, that is produced as an intermediate in the conversion of ornithine to arginine during urea formation in the liver.
[New Latin Citrullus, watermelon genus (from Medieval Latin citrullus, watermelon, from Italian dialectal citrulo, from Late Latin citrium, from Latin citrus, citron) + -ine.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
(Biochemistry) an amino acid that occurs in watermelons and is an intermediate in the formation of urea. Formula: NH2CONH(CH2)3CHNH2COOH
[C20: from Medieval Latin citrullus a kind of watermelon, from Latin citron, referring to its colour]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
an amino acid, C6H13N3O3, abundant in watermelons and an intermediate compound in the urea cycle.
[1930; < New Latin Citrull(us) the watermelon genus (ultimately derivative of Latin citrus citrus)]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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|Noun||1.||citrulline - an amino acid that does not occur in proteins but is an intermediate in the conversion of ornithine to arginine|
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