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

This skin-firming cream is packed with peptides to tackle crepey skin—along with a blend of murumuru, cupuaçu, and shea butters to deeply nourish. — Alanna Martine Kilkeary, Glamour, 26 Oct. 2026

Being a team player is part of the reason peptides have found popularity—and why that’s unlikely to wane anytime soon. — Deanna Pai, Vogue, 26 Oct. 2026

The formula includes peptides and rosemary to stimulate new growth, while strengthening your length. — Reece Andavolgyi, InStyle, 25 Oct. 2026

Several different types of peptides are naturally found in the body, like insulin and endorphins. — Renée Onque, CNBC, 24 Oct. 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
• gastric inhibitory peptide
• glucagon-like peptide
• glucose-dependent insulinotropic 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