: 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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Apply with your finger or with a brush to experience sheer, buildable color packed with nourishing agents like peptides, jojoba oil, and shea butter.
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Kiana Murden, Vogue, 23 May 2025
This ‘Stanley’ of Electric Toothbrushes As the name suggests, the Brightening Eye Stick is a compact, easy-to-use balm formulated with caffeine, niacinamide, and peptides, all of which help combat fine lines and tighten the appearance of the skin.
—Robyn Merrett, StyleCaster, 23 May 2025
Its second task is to provide long-term and ongoing resilience by sending biomimetic peptides and skin-identical ceramides deep into the dermis for firmness and a clear complexion.
—Justin Fenner, Robb Report, 12 May 2025
Key ingredients: Vegan collagen peptides, ceramides, cactus extract, squalane
Size: 1.0 fl. oz.
—Danielle Sinay, Glamour, 8 May 2025
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Kiana Murden, Vogue, 23 May 2025
This ‘Stanley’ of Electric Toothbrushes As the name suggests, the Brightening Eye Stick is a compact, easy-to-use balm formulated with caffeine, niacinamide, and peptides, all of which help combat fine lines and tighten the appearance of the skin.
—Robyn Merrett, StyleCaster, 23 May 2025
Its second task is to provide long-term and ongoing resilience by sending biomimetic peptides and skin-identical ceramides deep into the dermis for firmness and a clear complexion.
—Justin Fenner, Robb Report, 12 May 2025
Key ingredients: Vegan collagen peptides, ceramides, cactus extract, squalane
Size: 1.0 fl. oz.
—Danielle Sinay, Glamour, 8 May 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 2 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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