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: a crystalline essential amino acid C6H14N2O2 obtained from the hydrolysis of various proteins
Examples of lysine in a Sentence
Recent Examples on the Web
Corn, for example — considered a dietary staple by many people — is missing the essential amino acids tryptophan, lysine and threonine.
—Ascend Agency, Baltimore Sun, 1 Mar. 2024
Unlike the aforementioned alpha-hydroxy acids, tranexamic acid isn't a chemical exfoliator, but a synthetic derivative of the amino acid lysine.
—Jennifer Hussein, Allure, 10 Apr. 2024
Basically all animals are already lysine dependent and nearly all foods contain lysine.
—Ben Lamm, Rolling Stone, 9 July 2023
And third, for the superfans out there, the lysine dependence framed in the story as a way to keep the dinosaurs on the island won’t actually work.
—Ben Lamm, Rolling Stone, 9 July 2023
High-quality protein is any protein that contains all of the nine essential amino acids (histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan and valine) that our bodies don’t make on their own.
—USA TODAY, 2 July 2023
The proteins lysine and arginine work in combination with succinic acid and naturally derived guar to fortify curls and repair damage.
—Isabel Vasquez Rd Ldn, Health, 12 May 2023
Limited research shows that lysine may help the body with creating protein and repairing muscles.
—Caitlin Pagán, Verywell Health, 17 May 2023
Supplements made for immune support often contain lysine, an amino acid cats need for top immune function.
—Dallas News, 22 Dec. 2022
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'lysine.' 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
1892, in the meaning defined above
Dictionary Entries Near lysine
Cite this Entry
“Lysine.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/lysine. Accessed 10 Jun. 2024.
Kids Definition
lysine
noun
ly·sine
ˈlī-ˌsēn
: an essential amino acid obtained from various proteins
Medical Definition
lysine
noun
ly·sine
ˈlī-ˌsēn
: a crystalline essential amino acid C6H14N2O2 obtained from the hydrolysis of various proteins
—abbreviation Lys
More from Merriam-Webster on lysine
Britannica.com: Encyclopedia article about lysine
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