pep·tide (p?p?t?d?)n. Any of various natural or synthetic compounds containing two or more amino acids joined by peptide bonds that link the carboxyl group of one amino acid to the amino group of another.[pept(one) + -ide.]pep·tid?ic (-t?d??k) adj.pep·tid?i·cal·ly adv.American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.peptide (?p?pta?d) n (Elements & Compounds) 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, polypeptideCollins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014pep?tide (?p?p ta?d) n. 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. [1905?10; pept (ic) + -ide] Random House Kernerman Webster’s College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.pep·tide (p?p?t?d?) A chemical compound that is composed of a chain of two or more amino acids and is usually smaller than a protein. Some hormones and antibiotics are peptides.The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.