Etymology
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peptide (n.)

"short chain of amino acids linked by amide bonds," 1906, from German peptid (1902); see peptone + -ide, here probably indicating a derivative. Related: Peptidic.

updated on March 24, 2020

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Definitions of peptide from WordNet

peptide (n.)
amide combining the amino group of one amino acid with the carboxyl group of another; usually obtained by partial hydrolysis of protein;
Etymologies are not definitions. From wordnet.princeton.edu, not affiliated with etymonline.