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

However, Marks does offer GHK-Cu both as a serum and cream and occasionally as an injection, usually mixed with other peptides aimed at tissue repair and inflammation. — Will Stone, NPR, 7 Sep. 2026

Multi-Peptide + Copper Peptides 1% combines several signaling peptides designed to address fine lines, firmness, elasticity, and texture from multiple angles. — Christa Joanna Lee, Allure, 6 Sep. 2026

No better place than a SoCal gym to unfurl the mechanics of unapproved peptide trafficking. — Meghana Keshavan, STAT, 4 Sep. 2026

Biohacking can range from intermittent fasting to using (often unregulated) peptide injections. — Vince Basada, Sacbee.com, 4 Sep. 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