ˈpepˌtīd noun
( -s )
Etymology: International Scientific Vocabulary pept- +0 -ide; probably originally formed as German peptid
: any of a class of 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, that yield these acids on hydrolysis, that are classified according to the number of component amino acids, and that are obtained by partial hydrolysis of proteins or by synthesis (as from alpha-amino acids or their derivatives) — compare dipeptide , polypeptide