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

What’s the difference between collagen and collagen peptides? —Catharine Malzahn, Glamour, 12 Mar. 2025

There’s a reason people praise peptides for their hydrating properties. —Kathleen Ferraro, Verywell Health, 12 Mar. 2025

It’s loved by shoppers for being extra glossy and deeply hydrating thanks to ingredients like ceramides, peptides, and shea butter. —Taylor Jean Stephan, People.com, 9 Mar. 2025

The researchers focused on the enzyme prohormone convertase 1/3, which plays a role in obesity and produces peptides like GLP-1, the target of semaglutide. —William Lambers, Newsweek, 7 Mar. 2025

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