: 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
This lightweight undereye cream targets puffiness and dark circles with a blend of vitamin K oxide, hyaluronic acid, and peptides.
—
Christa Joanna Lee, Glamour, 23 July 2025
The site will produce small molecules, peptides, and oligonucleotides using AI, automation, and data analytics to optimize production.
—Steve Banker, Forbes.com, 23 July 2025
Ultra-moisturizing panthenol (or vitamin B5), soothing allantoin, and plumping peptides.
—Jessica Kasparian, SELF, 21 July 2025
With help from melon antioxidants, peptides, and SPF, the hydrating product shields your skin from harmful rays while also minimizing fine lines.
—Izzy Baskette, People.com, 9 July 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.
Christa Joanna Lee, Glamour, 23 July 2025
The site will produce small molecules, peptides, and oligonucleotides using AI, automation, and data analytics to optimize production.
—Steve Banker, Forbes.com, 23 July 2025
Ultra-moisturizing panthenol (or vitamin B5), soothing allantoin, and plumping peptides.
—Jessica Kasparian, SELF, 21 July 2025
With help from melon antioxidants, peptides, and SPF, the hydrating product shields your skin from harmful rays while also minimizing fine lines.
—Izzy Baskette, People.com, 9 July 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 29 Jul. 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