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

When a protein is chopped up into small pieces (peptides), a piece that carries this special amino acid difference is called a Genetically Variant Peptide (GVP). —Abhimanyu Ghoshal, New Atlas, 20 Dec. 2025

But unlike those three treatments, Eli Lilly’s pill is not a peptide medication. —Annika Kim Constantino, CNBC, 18 Dec. 2025

That debut will include 13 of the brand’s top sellers, including an eye corrector, eye masks, a growth factor serum and a peptide night cream, ranging in price from $28 to $69. —Kathryn Hopkins, Footwear News, 17 Dec. 2025

Colloidal gold and peptides make easy work out of transforming dull complexions. —Kiana Murden, Vogue, 12 Dec. 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