: 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 one uses hydrating glycerin, plus vitamins B3, E, zinc and peptides to strengthen hair and promote growth.
—
Jackie Fields, Peoplemag, 4 July 2024
Like the shampoo, the conditioner is infused with the K18 peptide, which is then tag-teamed with moisturizing ceramides and polysaccharides for super soft post-shower hair.
—Jennifer Hussein, Allure, 4 July 2024
From our research and testing, Medik8 stands out for two things: retinol and peptides—its Crystal Retinal 3 and Oxy-R Peptides are two Vogue editor favorite face serums.
—Kiana Murden, Vogue, 26 June 2024
Enhancing your lip’s appearance, collagen-boosting peptides reduce fine lines for pillow-soft lips.
—India Espy-Jones, Essence, 4 June 2024
See all Example Sentences for peptide 
Jackie Fields, Peoplemag, 4 July 2024
Like the shampoo, the conditioner is infused with the K18 peptide, which is then tag-teamed with moisturizing ceramides and polysaccharides for super soft post-shower hair.
—Jennifer Hussein, Allure, 4 July 2024
From our research and testing, Medik8 stands out for two things: retinol and peptides—its Crystal Retinal 3 and Oxy-R Peptides are two Vogue editor favorite face serums.
—Kiana Murden, Vogue, 26 June 2024
Enhancing your lip’s appearance, collagen-boosting peptides reduce fine lines for pillow-soft lips.
—India Espy-Jones, Essence, 4 June 2024
See all Example Sentences for peptide
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'peptide.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
Dictionary Entries Near peptide
Cite this Entry
“Peptide.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/peptide. Accessed 8 Jul. 2024.
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