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
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Nutritional yeast Nutritional yeast is rich in B vitamins, essential amino acids, and vitamins such as selenium, phosphorus, and magnesium.
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Alessandra Signorelli, Vogue, 12 Sep. 2025
Of the veterinary diets, 66% were found to have lower total protein by design and were also deficient in one or more essential amino acids.
—New Atlas, 7 Sep. 2025
The other 11 are nonessential because the body is able to produce them itself or synthesize them from the essential amino acids, according to the US National Library of Medicine.
—Carolyn L. Todd, SELF, 28 Aug. 2025
The impressive tech behind the mask is due to the brand’s AAComplex and Chronobiology Technology, which work in sync with your skin’s natural nighttime repair cycle to replenish essential amino acids, strengthen the barrier, and reduce visible signs of irritation.
—Jennifer Hussein, Allure, 26 Aug. 2025
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Alessandra Signorelli, Vogue, 12 Sep. 2025
Of the veterinary diets, 66% were found to have lower total protein by design and were also deficient in one or more essential amino acids.
—New Atlas, 7 Sep. 2025
The other 11 are nonessential because the body is able to produce them itself or synthesize them from the essential amino acids, according to the US National Library of Medicine.
—Carolyn L. Todd, SELF, 28 Aug. 2025
The impressive tech behind the mask is due to the brand’s AAComplex and Chronobiology Technology, which work in sync with your skin’s natural nighttime repair cycle to replenish essential amino acids, strengthen the barrier, and reduce visible signs of irritation.
—Jennifer Hussein, Allure, 26 Aug. 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 17 Sep. 2025.
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