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
Data is mixed on whether the amino acid improves symptoms.
—
Huma Sheikh, Health, 30 Nov. 2025
Our bodies make amino acids, but nine of the amino acids—known as the essential amino acids—must come from your diet.
—Karen Berger, Verywell Health, 30 Nov. 2025
Tatcha’s secret sauce is Hadasei-3, a potent blend of superfoods, amino acids, and AHAs.
—Conçetta Ciarlo, Vogue, 29 Nov. 2025
When cells produce proteins, the amino acids spontaneously fold into tangled and twisted structures, with pockets and protuberances, and sometimes long, trailing tails.
—Jeremy Kahn, Fortune, 28 Nov. 2025
See All Example Sentences for 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.
Huma Sheikh, Health, 30 Nov. 2025
Our bodies make amino acids, but nine of the amino acids—known as the essential amino acids—must come from your diet.
—Karen Berger, Verywell Health, 30 Nov. 2025
Tatcha’s secret sauce is Hadasei-3, a potent blend of superfoods, amino acids, and AHAs.
—Conçetta Ciarlo, Vogue, 29 Nov. 2025
When cells produce proteins, the amino acids spontaneously fold into tangled and twisted structures, with pockets and protuberances, and sometimes long, trailing tails.
—Jeremy Kahn, Fortune, 28 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 2 Dec. 2025.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
Share