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citrulline

[ si-truh-leen ]

noun

, Biochemistry.
  1. an amino acid, NH 2 CONH(CH 2 ) 3 CHNH 2 COOH, abundant in watermelons and an intermediate compound in the urea cycle.


citrulline

/ ˈsɪtrəˌliːn /

noun

  1. an amino acid that occurs in watermelons and is an intermediate in the formation of urea. Formula: NH 2 CONH(CH 2 ) 3 CHNH 2 COOH


citrulline

/ sĭtrə-lēn′ /

  1. An amino acid originally isolated from watermelon, occurring mostly in the liver as an intermediate in the conversion of ornithine to arginine during urea formation. Chemical formula: C 6 H 13 N 3 O 3 .


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Word History and Origins

Origin of citrulline1

1930; < New Latin citrull ( us ) the watermelon genus ( Medieval Latin citrul ( l ) us, citrolus, Latinization of South Italian citrulo, Tuscan citri ( u ) olo < Late Latin citrium watermelon (derivative of Latin citrus ( citrus ); apparently in reference to the citroncolored fruit of some types of watermelon), with -uolo < Latin -eolus ) + -ine 2

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Word History and Origins

Origin of citrulline1

C20: from Medieval Latin citrullus a kind of watermelon, from Latin citron, referring to its colour

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Example Sentences

Still others, like caffeine and citrulline malate, have more equivocal evidence.

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citron woodcitrus