amino acid

noun

: an amphoteric organic acid containing the amino group NH₂

especially : any of the various amino acids having the amino group in the alpha position that are the chief components of proteins and are synthesized by living cells or are obtained as essential components of the diet

Examples of amino acid in a Sentence

Recent Examples on the Web

These amino acids are essential in muscle development and assist with muscular recovery after a workout.10 Whey Protein Whey protein supplements boost protein intake to promote gains in muscle mass. —Mark Gurarie, Health, 28 Oct. 2024

This lush moisturizer is enriched with amino acids, electrolytes and essential lipids, and works to deeply replenish extra-dry skin. —Chloe Castleberry, Flow Space, 18 Oct. 2024

Eliminates Toxins Several studies suggest that wheatgrass's enzymes, amino acids, and chlorophyll may help your body eliminate toxins and remove heavy metals from the bloodstream.45 However, more human research is needed to confirm these benefits. —Allison Herries, Verywell Health, 15 Oct. 2024

Progress on achieving this dream began in 2003 when Baker used the 20 different amino acids found in proteins to design new proteins unlike any other. —Shawn Tully, Fortune, 10 Oct. 2024

Word History

First Known Use

1897, in the meaning defined above

Kids Definition

amino acid

noun

ami·​no acid

ə-ˈmē-nō-

: any of numerous acids that include some which are the building blocks of proteins and are made by living cells from simpler compounds or are obtained in the diet

Medical Definition

amino acid

noun

: an amphoteric organic acid containing the amino group NH₂

especially : alpha-amino acid