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[pep-tahyd] /ˈpɛp taɪd/
noun, Biochemistry.
a compound containing two or more amino acids in which the carboxyl group of one acid is linked to the amino group of the other.
Origin of peptide
1905-10; pept(ic) + -ide Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for peptide
Contemporary Examples
  • He has devoted his life to replicating that peptide and when he puts it back in the patient, their cancer goes away.

    My War on Cancer Suzanne Somers November 7, 2009
British Dictionary definitions for peptide


any of a group of compounds consisting of two or more amino acids linked by chemical bonding between their respective carboxyl and amino groups See also peptide bond, polypeptide
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for peptide

1906, from German peptid; see peptone + -ide, probably indicating a derivative.

Online Etymology Dictionary, © 2010 Douglas Harper
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peptide in Medicine

peptide pep·tide (pěp'tīd')
Any of various natural or synthetic compounds containing two or more amino acids linked by the carboxyl group of one amino acid and the amino group of another.

pep·tid'ic (-tĭd'ĭk) adj.
pep·tid'i·cal·ly adv.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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peptide in Science
A chemical compound that is composed of a chain of two or more amino acids and is usually smaller than a protein. The amino acids can be alike or different. Many hormones and antibiotics are peptides.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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