File:Tetrapeptide structural formulae v.1.png|thumb|300px|A tetrapeptide (example Val-Gly-Ser-Ala) with green marked amino end (L-Valine) and blue marked carboxyl end (L-Alanine). An oligopeptide, often just called peptide, (oligo-, `a few`) consists of 2 - 20 amino-acids and can include dipeptides, tripeptides, tetrapeptides, pentapeptides. The.....
<biochemistry> A peptide of a small number of component amino acids as opposed to a polypeptide. Exact size range is a matter of opinion but peptides from 3 to about 40 member amino acids might be so described. ... (18 Nov 1997) ... 
An imprecise term used to describe a peptide of around 6-10 residuesA peptide of a small number of component amino acids as opposed to a polypeptide. Exact size range is a matter of opinion but peptides from 3 to about 40 member amino acids might be so described.
Type: Term Pronunciation: ol′igō-pep′tīd Definitions: 1. A peptide the molecule of which contains a few amino acid residues up to about 20.
Oligopeptide: A molecule composed of a few amino acids linked to one another. Oligo- means a few.
peptide having up to approximately 20 amino acids