essential amino acid

noun

: any of various amino acids that are required for normal health and growth in many vertebrates, are either not manufactured in the body or manufactured in insufficient quantities, are usually supplied by dietary protein, and include histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, and valine compare nonessential amino acid

Examples of essential amino acid in a Sentence

Recent Examples on the Web

These sources have the highest amounts of protein and all the essential amino acids our bodies need. —Kristen Gasnick, Pt, Dpt, Verywell Health, 19 Dec. 2024

All the members of the legume family are full of nutrients, including copper, iron, magnesium, potassium, folic acid, zinc, the essential amino acid lysine, and lots of protein and fiber. —Sandee Lamotte, CNN, 12 Dec. 2024

Its patented essential amino acid blend results from over 20 years of research at the University of Arkansas and over 25 extensive human clinical trials on muscle repair, recovery, and muscle protein synthesis. —Chris Gallagher, USA TODAY, 21 Nov. 2024

Used to supplement a balanced diet, a shake can help satisfy your daily protein requirement and provide the essential amino acids your body needs to build muscle mass or simply recover better. —Caroline Tien, SELF, 3 Dec. 2024

Word History

First Known Use

1911, in the meaning defined above

Kids Definition

essential amino acid

noun

: an amino acid that is necessary for proper growth of the animal body and that cannot be made by the body in sufficient amounts but must be obtained from food containing proteins

Medical Definition

essential amino acid

noun

: any of various alpha-amino acids that are required for normal health and growth, are either not manufactured in the body or manufactured in insufficient quantities, are usually supplied by dietary protein, and in humans include histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, and valine