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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.]
(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]
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)]
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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|