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
Whey protein is a complete protein, supplying all nine essential amino acids your body can’t make on its own.4
People who can’t consume enough protein through whole foods may benefit from whey protein.
—
Lindsey Desoto, Health, 20 May 2025
Two tablespoons of hemp seeds have just as much protein as two egg whites—along with all nine essential amino acids (a rarity), omega-3, and omega-6.
—Margaux Anbouba, Vogue, 27 Mar. 2025
Soybeans and Soy products Soybeans are a source of protein and essential amino acids.
—Merve Ceylan, Health, 12 May 2025
Quinoa is a complete protein containing all essential amino acids your body can't make alone.
—Julie Marks, Verywell Health, 9 May 2025
See All Example Sentences for essential amino acid
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Lindsey Desoto, Health, 20 May 2025
Two tablespoons of hemp seeds have just as much protein as two egg whites—along with all nine essential amino acids (a rarity), omega-3, and omega-6.
—Margaux Anbouba, Vogue, 27 Mar. 2025
Soybeans and Soy products Soybeans are a source of protein and essential amino acids.
—Merve Ceylan, Health, 12 May 2025
Quinoa is a complete protein containing all essential amino acids your body can't make alone.
—Julie Marks, Verywell Health, 9 May 2025
See All Example Sentences for essential amino acid
Cite this Entry
“Essential amino acid.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/essential%20amino%20acid. Accessed 30 May. 2025.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
Share