Nonapeptide vs. Peptide

Nonapeptidenoun

An oligopeptide formed from nine amino acids

Peptidenoun

(organic compound) Any of a class of organic compounds consisting of various numbers of amino acids in which the amine of one is reacted with the carboxylic acid of the next to form an amide bond.

Peptidenoun

(chemistry) The peptide bond itself.

Peptidenoun

amide combining the amino group of one amino acid with the carboxyl group of another; usually obtained by partial hydrolysis of protein

Peptide

Peptides (from Greek language πεπτός, peptós derived from πέσσειν, péssein ) are short chains of between two and fifty amino acids, linked by peptide bonds. Chains of fewer than ten or fifteen amino acids are called oligopeptides, and include dipeptides, tripeptides, and tetrapeptides.