Origin: Greek prefix poly-
Polypeptide has 2 different meanings across 1 category:
a peptide containing 10 to more than 100 amino acids
"The researcher noted that while small peptides act as signals, larger polypeptides containing over fifty amino acids often fold into complex protein structures."
Any polymer of (same or different) amino acids joined via peptide bonds.
"The newly synthesized polypeptide chain folded into its functional shape once all twenty amino acid units had linked together through peptide bonds."