Definition of arginine in English:

Share this entry


Pronunciation: /ˈärjəˌnēn/ Pronunciation: /-ˌnīn/


A basic amino acid that is a constituent of most proteins. It is an essential nutrient in the diet of vertebrates.
  • Chemical formula: HN=C(NH2)NH(CH2)3CH(NH2)COOH.
Example sentences
  • Guanidoacetate itself is formed in the kidney from the amino acids arginine and glycine.
  • The amino acids arginine and leucine are noncarbohydrate inducers of insulin.
  • The conditionally essential amino acid arginine has also been added to this formula to help support growth factor production.


Late 19th century: from German Arginin, perhaps from Greek arginoeis 'bright-shining, white'.

For editors and proofreaders

Syllabification: ar·gi·nine

Share this entry

What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.