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
Glycine is an amino acid that can also act as an inhibitory neurotransmitter (a chemical messenger that calms brain activity).
—
Ayesha Gulzar, Verywell Health, 21 July 2025
Rich in beneficial compounds such as amino acids, polyphenols, lecithin, gallic acid, and minerals such as calcium, magnesium, and potassium, Mucuna is used as a rejuvenating and aphrodisiac remedy in Ayurvedic medicine, and even to heal snake bites.
—Alessandra Signorelli, Glamour, 21 July 2025
New research reveals that a simple amino acid, serine, helps push stem cells to abandon hair growth in favor of wound healing, opening the door to new therapies for chronic wounds.
—New Atlas, 19 July 2025
Sequencing ancient proteins involves determining the order of amino acids in a sample.
—Katie Hunt, CNN Money, 15 July 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.
Ayesha Gulzar, Verywell Health, 21 July 2025
Rich in beneficial compounds such as amino acids, polyphenols, lecithin, gallic acid, and minerals such as calcium, magnesium, and potassium, Mucuna is used as a rejuvenating and aphrodisiac remedy in Ayurvedic medicine, and even to heal snake bites.
—Alessandra Signorelli, Glamour, 21 July 2025
New research reveals that a simple amino acid, serine, helps push stem cells to abandon hair growth in favor of wound healing, opening the door to new therapies for chronic wounds.
—New Atlas, 19 July 2025
Sequencing ancient proteins involves determining the order of amino acids in a sample.
—Katie Hunt, CNN Money, 15 July 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 29 Jul. 2025.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
Share