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
Whey provides all amino acids and is easy to digest.
—
Merve Ceylan, Health, 28 Sep. 2025
Most self-tanners rely on DHA (dihydroxyacetone), a sugar that reacts with amino acids in the top layer of skin to create a gradual glow.
—Lily Wohlner, Allure, 23 Sep. 2025
By swapping out a handful of amino acids at the base of the antibody stem—called the YTE mutation—the researchers extended the half-life from approximately 20 days for palivizumab to around 70 days for the D25 antibody.
—Tara Haelle, Scientific American, 23 Sep. 2025
Aim for 20 to 30 g of high-quality protein per meal, with sources rich in leucine (an amino acid that supports muscle building and maintenance).
—Heather Jones, Verywell Health, 19 Sep. 2025
See All Example Sentences for amino acid
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Merve Ceylan, Health, 28 Sep. 2025
Most self-tanners rely on DHA (dihydroxyacetone), a sugar that reacts with amino acids in the top layer of skin to create a gradual glow.
—Lily Wohlner, Allure, 23 Sep. 2025
By swapping out a handful of amino acids at the base of the antibody stem—called the YTE mutation—the researchers extended the half-life from approximately 20 days for palivizumab to around 70 days for the D25 antibody.
—Tara Haelle, Scientific American, 23 Sep. 2025
Aim for 20 to 30 g of high-quality protein per meal, with sources rich in leucine (an amino acid that supports muscle building and maintenance).
—Heather Jones, Verywell Health, 19 Sep. 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 2 Oct. 2025.
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