ar·​gi·​nine | \ ˈär-jə-ˌnēn How to pronounce arginine (audio) \

Definition of arginine

: a crystalline basic amino acid C6H14N4O2 derived from guanidine

Examples of arginine in a Sentence

Recent Examples on the Web Consuming collagen is a particularly great way to get more conditional amino acids, like arginine, glutamine, glycine and proline. Better Health Market, Detroit Free Press, "The top 5 ways collagen can help your body run better," 30 July 2019 The cream features hyaluronic acid, arginine, and vitamin E to help soften the texture of uneven skin, while the serum, packed with essential fatty acids, has a soothing effect on the physical discomfort stretch marks can sometimes cause. Marci Robin, Allure, "Loey Lane's New Brand Love AnyBody Launches Affordable Body-Care Products at Target," 4 Apr. 2019 Even better: Add almonds, which contain a high level of blood-flow-enhancing arginine. Amanda Mitchell, Marie Claire, "The Tired Girl's Guide To Getting More Sleep & Having More Energy," 2 May 2012 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

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.

See More

First Known Use of arginine

1886, in the meaning defined above

History and Etymology for arginine

German Arginin

Keep scrolling for more

Learn More about arginine

Time Traveler for arginine

Time Traveler

The first known use of arginine was in 1886

See more words from the same year

Statistics for arginine

Cite this Entry

“Arginine.” Dictionary, Merriam-Webster, Accessed 31 Oct. 2020.

Keep scrolling for more

More Definitions for arginine


ar·​gi·​nine | \ ˈär-jə-ˌnēn How to pronounce arginine (audio) \

Medical Definition of arginine

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

More from Merriam-Webster on arginine Encyclopedia article about arginine

Comments on arginine

What made you want to look up arginine? Please tell us where you read or heard it (including the quote, if possible).


Test Your Vocabulary

Here Be Dragons: A Creature Identification Quiz

  • monster werewolf photo
  • Which is a synonym of werewolf?
Spell It

Can you spell these 10 commonly misspelled words?


Test Your Knowledge - and learn some interesting things along the way.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!