Literally meaning: “several peptides”
πεπτίδιο/peptidio(=peptid) a low weight polymer composed of two (dipeptide) or more amino acids joined by peptide bonds consisting parts of proteins > πέπτω/pepto(=digest)
+ίδιο/-idio(=ide, suffix meaning a member or a part of group)
(?) peptide is a part of group (protein)
Polypeptide is peptide containing more than two amino acids linked by peptide bonds.