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
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Hyaluronic acid, niacinamide, amino acids Fragrance: Fragrance-free Size: 1.7 fl.
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Alanna Martine Kilkeary, Glamour, 1 May 2025
Peptides are chains of amino acids, which are the building blocks of proteins that are essential for the skin.1 In addition to being naturally produced by the body, peptides are also used in topical skin care products like serums, moisturizers, sunscreens, and more, plus oral supplements.
—Cristina Mutchler, Verywell Health, 25 Apr. 2025
The vegan diet paid special attention to the amino acid content, to ensure the plant proteins were complete and comparable to the animal sources.
—New Atlas, 24 Apr. 2025
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L-tyrosine, also simply known as tyrosine, is an amino acid and a building block our bodies use to produce protein.
—Sean Mowbray, Discover Magazine, 22 Apr. 2025
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Alanna Martine Kilkeary, Glamour, 1 May 2025
Peptides are chains of amino acids, which are the building blocks of proteins that are essential for the skin.1 In addition to being naturally produced by the body, peptides are also used in topical skin care products like serums, moisturizers, sunscreens, and more, plus oral supplements.
—Cristina Mutchler, Verywell Health, 25 Apr. 2025
The vegan diet paid special attention to the amino acid content, to ensure the plant proteins were complete and comparable to the animal sources.
—New Atlas, 24 Apr. 2025
Newsletter Sign up for our email newsletter for the latest science news
L-tyrosine, also simply known as tyrosine, is an amino acid and a building block our bodies use to produce protein.
—Sean Mowbray, Discover Magazine, 22 Apr. 2025
See All Example Sentences for amino acid
Cite this Entry
“Amino acid.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/amino%20acid. Accessed 21 May. 2025.
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