arginine

noun

ar·​gi·​nine ˈär-jə-ˌnēn 

: a crystalline basic amino acid C₆H₁₄N₄O₂ derived from guanidine

Examples of arginine in a Sentence

Recent Examples on the Web

These aspects lead to an even higher concentration of compounds like theanine and arginine, which may contribute to its stress-reducing effects.9 5. —Sohaib Imtiaz, Verywell Health, 21 Apr. 2025

Your body makes creatine from the amino acids lysine, arginine, and methionine. —Jillian Kubala, Health, 17 Apr. 2025

Infused with nourishing arginine to strengthen and organic shea butter to condition, the dual-sided brush fans and separates for that effortlessly fluttery finish. —Kate Donnelly, Forbes.com, 15 Apr. 2025

In the body, L-citrulline is converted to arginine, which increases nitric oxide levels. —Kirstyn Hill, Pharmd, Mph, Health, 19 Mar. 2025

Word History

Etymology

German Arginin

First Known Use

1886, in the meaning defined above

Rhymes for arginine

• acridine
• alkaline
• andesine
• anodyne
• anticline
• asinine
• atropine
• benzidine
• borderline
• byzantine
• calamine
• caroline

Kids Definition

arginine

noun

ar·​gi·​nine ˈär-jə-ˌnēn 

: an amino acid that is found in various proteins

Medical Definition

arginine

noun

ar·​gi·​nine ˈär-jə-ˌnēn 

: a crystalline basic amino acid C₆H₁₄N₄O₂ derived from guanidine

—abbreviation Arg