: 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
Key ingredients: Copper peptides, sodium PCA, zinc oxide Size: 1.9 fl. oz.
—
Danielle Sinay, Glamour, 8 May 2025
Key Ingredients: Synthetic growth factors (peptides), anti-aging peptides, sodium hyaluronate
Size: 1 fl. oz.
—Emily Orofino, Vogue, 6 May 2025
Original price: $21.99 CeraVe Skin Renewing Night Cream features a complex of biomimetic peptides, hyaluronic acid, and three essential ceramides that work together to lock in skin's moisture and help restore your skin's protective barrier overnight.
—Nora Colomer
May Earn A Commission If You Buy Through Our Referral Links. This Content Was Created By A Team That Works Independently From The Fox Newsroom., FOXNews.com, 2 May 2025
Its star ingredients are peptides, which soothe sensitivity, and bisabolol—an anti-inflammatory that’ll calm down redness.
—Jennifer Hussein, Allure, 26 Apr. 2025
See All Example Sentences for peptide
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Danielle Sinay, Glamour, 8 May 2025
Key Ingredients: Synthetic growth factors (peptides), anti-aging peptides, sodium hyaluronate
Size: 1 fl. oz.
—Emily Orofino, Vogue, 6 May 2025
Original price: $21.99 CeraVe Skin Renewing Night Cream features a complex of biomimetic peptides, hyaluronic acid, and three essential ceramides that work together to lock in skin's moisture and help restore your skin's protective barrier overnight.
—Nora Colomer
May Earn A Commission If You Buy Through Our Referral Links. This Content Was Created By A Team That Works Independently From The Fox Newsroom., FOXNews.com, 2 May 2025
Its star ingredients are peptides, which soothe sensitivity, and bisabolol—an anti-inflammatory that’ll calm down redness.
—Jennifer Hussein, Allure, 26 Apr. 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 17 May. 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
Love words? Need even more definitions?
Merriam-Webster unabridged
Share