Ornithine Definition

ôrnə-thēn
noun
A nonessential amino acid, NH2(CH2)3CH(NH2)COOH, found in animals as a product of urea formation from proteins and in the excrement of birds.
Webster's New World

(biochemistry, organic chemistry) An amino acid, 2,5-diaminopentanoic acid, that is not present in protein, but is an intermediate in the biosynthesis of urea.

Wiktionary

Other Word Forms of Ornithine

Noun

Singular:
ornithine
Plural:
ornithines

Origin of Ornithine

  • ornith(uric acid) an acid found in birds' urine (ornith(o)–) (uric acid) –ine

    From American Heritage Dictionary of the English Language, 5th Edition

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ornithine