: 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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Slayton makes a smoothie with frozen strawberries, collagen peptides, and almond butter, or drizzles fresh berries with aged balsamic vinegar for a snack.
—
Embry Roberts, Martha Stewart, 24 May 2026
The body oil that won’t burn — Vacation Shimmer Oil delivers broad spectrum SPF 30 protection with a base layer of pearlescent gold mica, peptides, hyaluronic acid and vitamin E, plus a mix of argan, coconut, marula and jojoba oils.
—Kaleigh Werner, Footwear News, 23 May 2026
Olay’s Regenerist eye cream formula also includes bakuchiol and a peptide complex.
—Tamim Alnuweiri, InStyle, 23 May 2026
Selling peptides Beyond the games, the company has plans to sell performance-enhancing substances.
—Kai Nicol-Schwarz, CNBC, 22 May 2026
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Embry Roberts, Martha Stewart, 24 May 2026
The body oil that won’t burn — Vacation Shimmer Oil delivers broad spectrum SPF 30 protection with a base layer of pearlescent gold mica, peptides, hyaluronic acid and vitamin E, plus a mix of argan, coconut, marula and jojoba oils.
—Kaleigh Werner, Footwear News, 23 May 2026
Olay’s Regenerist eye cream formula also includes bakuchiol and a peptide complex.
—Tamim Alnuweiri, InStyle, 23 May 2026
Selling peptides Beyond the games, the company has plans to sell performance-enhancing substances.
—Kai Nicol-Schwarz, CNBC, 22 May 2026
See All Example Sentences for peptide
Cite this Entry
“Peptide.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/peptide. Accessed 27 May. 2026.
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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