: 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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Key Takeaways The body readily absorbs collagen peptides from powder, capsules, and drinks.
—
Lindsay Curtis, Verywell Health, 28 Dec. 2025
It's made with a patented peptide complex to help reduce the appearance of fine lines and boost elasticity.
—Clara McMahon, PEOPLE, 26 Dec. 2025
Lazy’s Double Duty Serum Moisturizer Duo features squalane, glycerin, hyaluronic acid, and peptides to hydrate, moisturize, and support the skin’s natural healing response.
—Jacqueline Kilikita, Refinery29, 24 Dec. 2025
Meaning, the medication mimics a protein in your body called glucagon-like peptide 1 (GLP-1).
—Korin Miller, SELF, 23 Dec. 2025
See All Example Sentences for peptide
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Lindsay Curtis, Verywell Health, 28 Dec. 2025
It's made with a patented peptide complex to help reduce the appearance of fine lines and boost elasticity.
—Clara McMahon, PEOPLE, 26 Dec. 2025
Lazy’s Double Duty Serum Moisturizer Duo features squalane, glycerin, hyaluronic acid, and peptides to hydrate, moisturize, and support the skin’s natural healing response.
—Jacqueline Kilikita, Refinery29, 24 Dec. 2025
Meaning, the medication mimics a protein in your body called glucagon-like peptide 1 (GLP-1).
—Korin Miller, SELF, 23 Dec. 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 31 Dec. 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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