-
- To save this word, you'll need to log in.
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
All work with a menagerie of proteins and amino acids to soften hair, give it a glassy effect and eliminate flyaways without greasiness.
—Devon Abelman, Allure, 2 Oct. 2024
Find it on Amazon This Cleansing Foam Creates a Flawless Base
Using green tea extract and amino acids, this cleansing foam deeply cleanses your face without drying your skin out or causing any irritation.
—Mia Meltzer, Rolling Stone, 27 Sep. 2024
Ingredients like castor oil and amino acid peptides, both nourishing ingredients that moisturise the hair and support hair growth, are also present.
—Venus Wong, refinery29.com, 27 Sep. 2024
The healthiest fish to eat are rich in nutrients like omega-3 fatty acids, iodine, selenium, vitamin D, and amino acids.
—Brittany Lubeck, Ms, Rdn, Verywell Health, 19 Sep. 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 8 Oct. 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
Love words? Need even more definitions?
Merriam-Webster unabridged
Share