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

Key Ingredients: Glycerin, sodium PCA, arginine, biotin Editor’s Note: Formula aside, the wand was the biggest selling point for me. —Kiana Murden, Vogue, 12 Feb. 2025

The formula uses a strengthening complex featuring amino acids, arginine, and citric acid to revive damaged hair and prevent future breakage. —Kiana Murden, Vogue, 28 Dec. 2024

Key ingredients like arginine, soy protein, and lavender water work together to condition and strengthen brows, reduce breakage, and encourage steady growth over time. —Christa Joanna Lee, Allure, 19 Dec. 2024

There’s also a dose of arginine, an important amino acid that’s one of the key building blocks of collagen. —Justin Fenner, Robb Report, 19 Dec. 2024

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