: 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
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As expected, the sugar drink led to increases in blood sugar and the hormones that regulate it, including insulin and glucagon-like peptide 1 (GLP-1).
—
Tom Gavin, EverydayHealth.com, 2 Apr. 2025
Merck’s drug is what’s known as a macrocyclic peptide, which requires patients to fast before taking it to allow for proper absorption.
—Annika Kim Constantino,ashley Capoot, CNBC, 1 Apr. 2025
The slightly curved wand coats each lash in nourishing ingredients—biotin helps to fortify lashes to protect against breakage, while antioxidant-rich ingredients like peptides, vitamin E, and panthenol help to condition and hydrate.
—Conçetta Ciarlo, Vogue, 26 Mar. 2025
The peptide was particularly effective against gram-negative bacteria such as Escherichia coli, Pseudomonas aeruginosa, Acinetobacter baumannii, and Klebsiella pneumoniae.
—Michael Franco, New Atlas, 26 Mar. 2025
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Tom Gavin, EverydayHealth.com, 2 Apr. 2025
Merck’s drug is what’s known as a macrocyclic peptide, which requires patients to fast before taking it to allow for proper absorption.
—Annika Kim Constantino,ashley Capoot, CNBC, 1 Apr. 2025
The slightly curved wand coats each lash in nourishing ingredients—biotin helps to fortify lashes to protect against breakage, while antioxidant-rich ingredients like peptides, vitamin E, and panthenol help to condition and hydrate.
—Conçetta Ciarlo, Vogue, 26 Mar. 2025
The peptide was particularly effective against gram-negative bacteria such as Escherichia coli, Pseudomonas aeruginosa, Acinetobacter baumannii, and Klebsiella pneumoniae.
—Michael Franco, New Atlas, 26 Mar. 2025
See All Example Sentences for peptide
Cite this Entry
“Peptide.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/peptide. Accessed 10 Apr. 2025.
Copy CitationKids 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
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