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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
Studies show that eating cheddar can help increase blood levels of amino acids like leucine and promote muscle growth.14
Try adding cheddar to salads and sandwiches or pairing cheddar with fresh fruit and nuts for a filling snack.
5.
—Jillian Kubala, Health, 1 July 2024
The structure of some amino acids is similar to glucose, and these are taken to the liver and converted to glucose.
—Bryant Stamford, The Courier-Journal, 27 June 2024
All flavors have caffeine, vitamins and taurine — an amino acid common in popular energy drinks that has been touted as helping to improve exercise performance, though more studies are needed.
—Elizabeth Chuck, NBC News, 25 June 2024
The rind contains citrulline, an amino acid that may help improve blood circulation and lower blood pressure.11 It’s also packed with fiber, which promotes a functioning digestive system.
—Nick Blackmer, Verywell Health, 12 June 2024
See all Example Sentences for amino acid
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'amino acid.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
Word History
First Known Use
1897, in the meaning defined above
Dictionary Entries Near amino acid
Cite this Entry
“Amino acid.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/amino%20acid. Accessed 15 Jul. 2024.
Kids Definition
amino acid
noun
ami·no acid
ə-ˈmē-nō-
: any of numerous acids that include some which are the building blocks of proteins and are made by living cells from simpler compounds or are obtained in the diet
Medical Definition
amino acid
noun
: an amphoteric organic acid containing the amino group NH2
especially
: alpha-amino acid
More from Merriam-Webster on amino acid
Nglish: Translation of amino acid for Spanish Speakers
Britannica.com: Encyclopedia article about amino acid
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