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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Tyrosine is an amino acid that separates from proteins in the cheese as the cheese breaks down during aging.
—
Katie Rosenhouse, Southern Living, 5 Dec. 2025
The sugars discovered in the asteroid samples, along with other molecules like amino acids previously detected in them, do not necessarily provide evidence of life, NASA said.
—Emily Mae Czachor, CBS News, 3 Dec. 2025
Data is mixed on whether the amino acid improves symptoms.
—Huma Sheikh, Health, 30 Nov. 2025
Protein is made up of amino acids, which are known as building blocks.
—Karen Berger, Verywell Health, 30 Nov. 2025
See All Example Sentences for amino acid
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Katie Rosenhouse, Southern Living, 5 Dec. 2025
The sugars discovered in the asteroid samples, along with other molecules like amino acids previously detected in them, do not necessarily provide evidence of life, NASA said.
—Emily Mae Czachor, CBS News, 3 Dec. 2025
Data is mixed on whether the amino acid improves symptoms.
—Huma Sheikh, Health, 30 Nov. 2025
Protein is made up of amino acids, which are known as building blocks.
—Karen Berger, Verywell Health, 30 Nov. 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 9 Dec. 2025.
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