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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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
The formula, which is available now, uses ergothioneine, an amino acid and antioxidant, typically derived from mushrooms, to improve Vitamin C’s performance.
—Adam Hurly, Robb Report, 18 Sep. 2025
The smell Cruciferous vegetables such as cauliflower, cabbage, kale, broccoli and Brussels sprouts contain glucosinolate, a unique phytonutrient that’s made up of amino acids, glucose, nitrogen and sulfur.
—Sheah Rarback, Miami Herald, 18 Sep. 2025
Hydrolyzed proteins replenish lost amino acids that intensively nourish and maintain hair in a healthy, balanced state.
—Sophia Panych, Allure, 16 Sep. 2025
See All Example Sentences for amino acid
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Heather Jones, Verywell Health, 19 Sep. 2025
The formula, which is available now, uses ergothioneine, an amino acid and antioxidant, typically derived from mushrooms, to improve Vitamin C’s performance.
—Adam Hurly, Robb Report, 18 Sep. 2025
The smell Cruciferous vegetables such as cauliflower, cabbage, kale, broccoli and Brussels sprouts contain glucosinolate, a unique phytonutrient that’s made up of amino acids, glucose, nitrogen and sulfur.
—Sheah Rarback, Miami Herald, 18 Sep. 2025
Hydrolyzed proteins replenish lost amino acids that intensively nourish and maintain hair in a healthy, balanced state.
—Sophia Panych, Allure, 16 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 26 Sep. 2025.
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