: 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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Collagen Peptides Protein: 18 grams per 20-gram scoop Collagen peptides can be mixed into hot and cold drinks, such as coffee and smoothies, and recipes, such as oatmeal and chia pudding.
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Jillian Kubala, Health, 10 June 2025
Formulated with 96% natural-origin ingredients, this features a blend of niacinamide, caffeine, squalane, peptides, hyaluronic acid, and SPF 25 to reveal hydrated, supple skin.
—Kiana Murden, Vogue, 9 June 2025
Its ingredient list includes peptides and peppermint oil, which work together to plump your lips up without making your skin burn.
—Angela Trakoshis, Allure, 4 June 2025
These peptides can help researchers distinguish different animal genera and perhaps even species.
—Monica Cull, Discover Magazine, 3 June 2025
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Jillian Kubala, Health, 10 June 2025
Formulated with 96% natural-origin ingredients, this features a blend of niacinamide, caffeine, squalane, peptides, hyaluronic acid, and SPF 25 to reveal hydrated, supple skin.
—Kiana Murden, Vogue, 9 June 2025
Its ingredient list includes peptides and peppermint oil, which work together to plump your lips up without making your skin burn.
—Angela Trakoshis, Allure, 4 June 2025
These peptides can help researchers distinguish different animal genera and perhaps even species.
—Monica Cull, Discover Magazine, 3 June 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 23 Jun. 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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