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

Featuring the brand’s signature peptide ingredient, the Lip Shape marks Rhode’s second color cosmetics launch following the release of the Pocket Blush last year. —Ariana Yaptangco, Glamour, 7 Feb. 2025

The lipliner moisturizes with peptides while defining lips and comes in 11 different shades. —Marissa Muller, WWD, 1 Feb. 2025

Incorporating acupuncture with complimentary technologies, her treatments might include reiki, bio resonance (a psychosomatic pathology correction method), infrared technology and peptide infusion masks. —Angelina Villa-Clarke, Forbes, 23 Jan. 2025

People are paying thousands for longevity treatments like plasma exchange and peptide therapy. —Jonathan Wolfe, New York Times, 23 Jan. 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

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