peptide

noun

pep·​tide ˈpep-ˌtīd How to pronounce peptide (audio)
: 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
peptidic adjective

Examples of peptide in a Sentence

Recent Examples on the Web There’s the Soft Serve After Shave Oil, which prevents razor burn and ingrown hairs with a blend of anti-inflammatory peptides to reduce redness and heal bumps, hyaluronic acid to hydrate and strawberry that’s naturally loaded with AHAs to exfoliate. Celia Shatzman, Forbes, 1 Mar. 2024 Clinique Smart Clinical Repair Wrinkle Correcting Serum Perfect for all skin types, this serum with retinol and peptides is designed with nonirritating ingredients. Glamour, 1 Mar. 2024 The elixir pairs peptides, AHA/BHA (specifically, glycolic, mandelic, lactic, and phytic acid), bioferments, shea butter, and papain into a silky exfoliant that smooths skin texture, conditions flaky skin, and soothes irritation. Kiana Murden, Vogue, 29 Feb. 2024 DeMuth explains that when small vaccine molecules (such as peptides, short strands of DNA and some proteins) are injected, the blood captures them and flushes them through the body. Jaimie Seaton, Scientific American, 13 Feb. 2024 Look for ingredients like ceramides and peptides, which help strengthen and repair your barrier function. Sarah Y. Wu, Peoplemag, 4 Jan. 2024 As the sun’s vitality wanes, this roller, infused with a powerful blend of caffeine, vitamin C, and peptides, becomes your secret weapon. Kat Romero, Rolling Stone, 31 Jan. 2024 Exosomes are nano-sized care packages filled with lipids, proteins, amino acids, peptides, and growth factors that are excreted by almost all cells in the body. Ahmed Zambarakji, Robb Report, 5 Feb. 2024 The preferred medication is a glucagon-like peptide 1 receptor agonist (GLP-1) such as Ozempic (semaglutide) or a dual glucose-dependent insulinotropic polypeptide (GIP) agonist and GLP-1 agonist such as Mounjaro (tirzepatide). Laura Hensley, Verywell Health, 2 Feb. 2024

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.

Word History

Etymology

International Scientific Vocabulary, from peptone

First Known Use

1906, in the meaning defined above

Time Traveler
The first known use of peptide was in 1906

Dictionary Entries Near peptide

Cite this Entry

“Peptide.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/peptide. Accessed 19 Mar. 2024.

Kids Definition

peptide

noun
pep·​tide ˈpep-ˌtīd How to pronounce peptide (audio)
: any of various substances that are usually obtained by the partial breakdown of proteins

Medical Definition

peptide

noun
pep·​tide ˈpep-ˌtīd How to pronounce peptide (audio)
: 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
peptidic adjective

More from Merriam-Webster on peptide

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