from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. An amino acid, C6H14N4O2, obtained from the hydrolysis or digestion of plant and animal protein.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. An amino acid found in animal foods that plays an important role in several physiological processes.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. a bitter tasting amino acid found in proteins and necessary for nutrition; its absence from the diet leads to a reduced production of spermatozoa


from The American Heritage® Dictionary of the English Language, 4th Edition

German Arginin, possibly from Greek arginoeis, bright; see arg- in Indo-European roots.

from Wiktionary, Creative Commons Attribution/Share-Alike License

From German Arginin, perhaps from Ancient Greek ἀργινόεις (arginoeis, "brightly-shining, white").


  • In this research, arginine is given in pill form to determine if it can reduce or prevent symptoms in people with sickle cell disease.

    Sickle cell disease research at The Children's Hospital

  • The long-term arginine treatment did not have any adverse effects on either group.

    Health News from Medical News Today

  • Researchers note that pistachios are rich in antioxidants and contain a non-essential amino acid called arginine, which contributes to flexible, more relaxed arteries.

    Predicting ADHD Risk From Birth

  • And they contain L-arginine, which is a substance that protects flexibility and elasticity of arteries, says Duke's Politi.

    Skip the sweets and just go nuts

  • The anti-diuretic hormone was later identified as arginine vasopressin AVP.

    SIADH or SIAD-where did the "h" go and does it matter?

  • A second amino acid your partner should consider taking is arginine, which is necessary for the body to manufacture cells and is essential for the formation of sperm.

    Getting Pregnant

  • While she was at the University of Illinois Medical Center, Paula Hoffman carried out a joint research project with Boris Tabakoff and associates to investigate the effect of a neuropeptide called arginine vasopressin on the response to alcohol, particularly on tolerance.

    Alcohol and The Addictive Brain

  • So, for example, the bases AGG encode an amino acid called arginine, while AGC encodes serine.

    Ars Technica

  • AMDA is a by-product of the metabolism of the protein, arginine, that is said to interfere with the amino acid L-arginine, which is involved in the production of nitric oxide (NO).

    The World's Healthiest Foods

  • It's a great source of arginine, which is believed to relax and open arteries.



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