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

Barrier repair creams with ceramides, cholesterol or fatty acids, or formulas with peptide and growth factor will also aid in skin nourishment and renewal. —Starr Bowenbank, People.com, 22 June 2025

Greater production of a blood vessel-constricting peptide. —Abhimanyu Ghoshal, New Atlas, 15 June 2025

Additionally, peptides and niacinamide help protect against dark spots while brightening the skin and refining pores. —Conçetta Ciarlo, Vogue, 13 June 2025

Medik8’s peptide products have become a growth engine for it in the U.S. market, which the brand entered in 2023. —Jennifer Weil, Footwear News, 9 June 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