Definitions for ornithineˈɔr nəˌθin

This page provides all possible meanings and translations of the word ornithine

Random House Webster's College Dictionary

or•ni•thineˈɔr nəˌθin(n.)

  1. an amino acid, H2N(CH2)3CH(NH2)COOH, obtained by the hydrolysis of arginine and occurring as an intermediate compound in the urea cycle of mammals.

    Category: Biochemistry

Origin of ornithine:

1880–85; ornith(uric acid), secreted by birds + -ine2

Princeton's WordNet

  1. ornithine(noun)

    an amino acid that does not occur in proteins but is important in the formation of urea


  1. ornithine(Noun)

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


  1. Ornithine

    Ornithine is an amino acid that plays a role in the urea cycle. Ornithine is abnormally accumulated in the body in ornithine transcarbamylase deficiency.

U.S. National Library of Medicine

  1. Ornithine

    An amino acid produced in the urea cycle by the splitting off of urea from arginine.


Find a translation for the ornithine definition in other languages:

Select another language:

Discuss these ornithine definitions with the community:


Use the citation below to add this definition to your bibliography:


"ornithine." STANDS4 LLC, 2014. Web. 20 Dec. 2014. <>.

Are we missing a good definition for ornithine?

The Web's Largest Resource for

Definitions & Translations

A Member Of The STANDS4 Network

Nearby & related entries:

Alternative searches for ornithine: