: 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
Whipping caffeine, creatine, peptides, and an Ayurvedic Haritaki fruit into a weightless serum, Champo’s Pitta Growth is a great growth solution for fine hair types.
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Kiana Murden, Vogue, 12 Sep. 2025
It can be manufactured more easily than peptides, like the shots and Novo's pill.
—Angelica Peebles, CNBC, 12 Sep. 2025
The brand’s eye-specific product packs a punch courtesy of antioxidants, fine line–erasing peptides, and Persian silk tree extract (the latter is both a preventative and curative measure against dark circles and puffiness).
—Stacia Datskovska, Footwear News, 12 Sep. 2025
Olay Regenerist Micro-Sculpting Cream The cream is formulated with skin-nourishing ingredients, like niacinamide to brighten the skin and strengthen its moisture barrier, amino peptides to firm and sculpt, and hydrating hyaluronic acid to plump fine lines and wrinkles.
—Alicia Geigel, Southern Living, 11 Sep. 2025
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Kiana Murden, Vogue, 12 Sep. 2025
It can be manufactured more easily than peptides, like the shots and Novo's pill.
—Angelica Peebles, CNBC, 12 Sep. 2025
The brand’s eye-specific product packs a punch courtesy of antioxidants, fine line–erasing peptides, and Persian silk tree extract (the latter is both a preventative and curative measure against dark circles and puffiness).
—Stacia Datskovska, Footwear News, 12 Sep. 2025
Olay Regenerist Micro-Sculpting Cream The cream is formulated with skin-nourishing ingredients, like niacinamide to brighten the skin and strengthen its moisture barrier, amino peptides to firm and sculpt, and hydrating hyaluronic acid to plump fine lines and wrinkles.
—Alicia Geigel, Southern Living, 11 Sep. 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 19 Sep. 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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