ar·​gi·​nine | \ˈär-jə-ˌnēn \

Definition of arginine 

: a crystalline basic amino acid C6H14N4O2 derived from guanidine

Examples of arginine in a Sentence

Recent Examples on the Web

The serum promised the same kind of results, thanks to a blend of arginine, acid proteins, and Pro Vitamin B5. Jenna Rosenstein, Harper's BAZAAR, "I Tried The Easy (and Longer Lasting) Alternative to Fake Lashes," 9 Oct. 2018 High in a circulation-boosting amino acid called arginine, a bowl of oatmeal helps increase blood flow to all parts of the body. Abigail L. Cuffey, Woman's Day, "5 Foods for Optimal Health," 27 Aug. 2012 Soy and coconut aminos include building blocks like tryptophan and arginine that are essential to the formation of muscles and that supposedly remove toxins from our bodies. Kyle Beechey, Bon Appetit, "The Mysterious Hippie Food Brand That's Never Let Me Down," 27 June 2018 Cocktails include vitamin C, B12, magnesium, calcium, B5, glutamine, zinc, arginine, glutathione, or lysine. Amy Bartner, Indianapolis Star, "Hungover? This place on Mass Ave. will inject you with a remedy," 31 May 2018 The collagen found in our bodies is made up of several amino acids, including glycine, proline, hydroxyproline, and arginine. Elise Deming, Rdn, Ldn,, "What is collagen and why are people eating it?," 26 Feb. 2018 Fatty fish also contains L-arginine, an amino acid used to treat problems with erections. Well + Good, Harper's BAZAAR, "7 Surprising Foods That Will Improve Your Sex Life," 17 July 2015 One way to boost your immunity system before surgery is to eat foods high in arginine, amino acid and omega-3 fatty acids. Amy Osmond Cook, Orange County Register, "4 reasons why training for surgery is good for your health," 8 June 2017 Impact AR contains arginine, an amino acid; certain nucleotides; and fish oil, which helps fight inflammation. Shari Rudavsky, Indianapolis Star, "This red bag, available only at IU Health, can help you fly through surgery," 2 May 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'arginine.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of arginine

1886, in the meaning defined above

History and Etymology for arginine

German Arginin

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Statistics for arginine

Last Updated

19 Nov 2018

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Time Traveler for arginine

The first known use of arginine was in 1886

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More Definitions for arginine


ar·​gi·​nine | \ˈär-jə-ˌnēn \

Medical Definition of arginine 

: a crystalline basic amino acid C6H14N4O2 derived from guanidine abbreviation Arg

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