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 This insertion added the peptide GLTSKRN (glycine-leucine-threonine-serine-lysine-arginine-asparagine) between Spike protein positions 214 and 215. William A. Haseltine, Forbes, 28 Sep. 2021 Cosmetic chemist Ginger King explains arginine is an amino acid that helps to nourish lashes and panthenol, an active also known as provitamin B5, is the same ingredient found in Pantene products to strengthen hair and, in this case, lashes. Sarah Han, Allure, 3 Aug. 2021 The sequencing data revealed a variant that substituted an amino acid called histidine for arginine. Jason Ulrich, Scientific American, 1 Aug. 2021 To offset this corrosion, recent therapeutics containing acid buffering agents, such as arginine, are included in toothpastes and mouth rinses to combat the disease. Jeffrey Ebersole, The Conversation, 18 May 2021 The third mutant in S1, the substitution of proline for arginine (P681R), is located near the cleavage site between S1 and S2. William A. Haseltine, Forbes, 12 Apr. 2021 This affordable brush-on serum utilizes a blend of lash-loving ingredients like hyaluronic acid and the amino acid arginine. Victoria Moorhouse, Forbes, 24 Feb. 2021 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, 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, 4 Apr. 2019

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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Time Traveler for arginine

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The first known use of arginine was in 1886

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Last Updated

11 Nov 2021

Cite this Entry

“Arginine.” Dictionary, Merriam-Webster, Accessed 29 Nov. 2021.

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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


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