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: any of various amides that are derived from two or more amino acids by combination of the amino group of one acid with the carboxyl group of another and are usually obtained by partial hydrolysis of proteins
Examples of peptide in a Sentence
Recent Examples on the Web
These new color correctors are also formulated with double the caffeine, double the hyaluronic acid, and 10 times the peptides.
—Kleigh Balugo, StyleCaster, 10 Jan. 2025
SkinMedica’s serum is infused with a growth factor blend, peptide complex, and marine extracts to wave goodbye to sagging skin.
—Kiana Murden, Vogue, 9 Jan. 2025
Olaplex’s formulation is made with the brand’s exclusive peptide complex, which was designed to strengthen the anagen (or growth phase) of the lashes.
—Jenny Berg, Allure, 24 Dec. 2024
Score it in a bundle with its matching conditioner, peptide density serum, and Destined for Density biotin supplements for 20 percent off.
—Averi Baudler, People.com, 26 Dec. 2024
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Word History
Etymology
International Scientific Vocabulary, from peptone
First Known Use
1906, in the meaning defined above
Phrases Containing peptide
Dictionary Entries Near peptide
Cite this Entry
“Peptide.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/peptide. Accessed 18 Jan. 2025.
Kids Definition
peptide
noun
pep·tide
ˈpep-ˌtīd
: any of various substances that are usually obtained by the partial breakdown of proteins
Medical Definition
peptide
noun
pep·tide
ˈpep-ˌtīd
: any of various amides that are derived from two or more amino acids by combination of the amino group of one acid with the carboxyl group of another and are usually obtained by partial hydrolysis of proteins
More from Merriam-Webster on peptide
Britannica.com: Encyclopedia article about peptide
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