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

peptidic

pep-ˈti-dik 

adjective

Examples of peptide in a Sentence

Recent Examples on the Web

It’s encapsulated in exosome technology and powered by their Suprême Skin Bio-Complex that’s rich in peptides and visibly triggers skin renewal, plus evens, brightens and firms in four weeks. — Celia Shatzman, Forbes.com, 18 Aug. 2026

That’s thanks to 10% glycolic acid, an alpha hydroxy acid known to improve skin texture and tone, plus glycerin, peptides, and pomegranate enzymes for additional skin-loving benefits. — Kiana Murden, Vogue, 17 Aug. 2026

The return of tanning, unregulated peptides, and now, exploding mousse? — James Manso, Allure, 17 Aug. 2026

The Eight Saints Firm Intentions Anti-Aging Neck Cream is infused with vitamins, botanicals, and peptides, leaving skin smoother, softer, and more supple. — Sian Babish, PEOPLE, 16 Aug. 2026

Word History

Etymology

International Scientific Vocabulary, from peptone

First Known Use

1906, in the meaning defined above

Phrases Containing peptide

• amyloid beta peptide
• atrial natriuretic peptide
• beta-amyloid peptide
• opioid peptide
• peptide bond
• peptide linkage

Rhymes for peptide

• abide
• allied
• applied
• aside
• astride
• azide
• backside
• bankside
• bastide
• bayside
• bedside
• belied

Kids 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

peptidic

pep-ˈtid-ik 

adjective