: 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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Resistant to creasing, the talc-free formulation smooths and soothes the skin around the eyes with peptides and chamomile, calendula, and magnolia-bark extracts.
—
Jenny Berg, Vogue, 22 Nov. 2025
Hydrating skincare ingredients such as ceramides, peptides, hyaluronic acid, and antioxidants can help smooth the skin's surface and improve wear time.
—Grace McCarty, Glamour, 21 Nov. 2025
Most of his peers were focused on GLP-1, or leptin, or other peptides—molecules made of the same building blocks as proteins, but smaller.
—Roxanne Khamsi, The Atlantic, 19 Nov. 2025
The Strawberry Glaze Skin Smoothie blends strawberries, banana, avocado, dates, collagen peptides, sea moss gel and coconut cream, while the Malibu Mango pairs mango, pineapple, and banana with coconut cream and lion’s mane mushroom for cognitive support.
—Moná Thomas, PEOPLE, 19 Nov. 2025
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Jenny Berg, Vogue, 22 Nov. 2025
Hydrating skincare ingredients such as ceramides, peptides, hyaluronic acid, and antioxidants can help smooth the skin's surface and improve wear time.
—Grace McCarty, Glamour, 21 Nov. 2025
Most of his peers were focused on GLP-1, or leptin, or other peptides—molecules made of the same building blocks as proteins, but smaller.
—Roxanne Khamsi, The Atlantic, 19 Nov. 2025
The Strawberry Glaze Skin Smoothie blends strawberries, banana, avocado, dates, collagen peptides, sea moss gel and coconut cream, while the Malibu Mango pairs mango, pineapple, and banana with coconut cream and lion’s mane mushroom for cognitive support.
—Moná Thomas, PEOPLE, 19 Nov. 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 30 Nov. 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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