Dipeptide is a term used in biochemistry to refer to a molecule made up of two amino acids joined together by a peptide bond. Some synonyms for dipeptide include di-amino acid, dipeptidyl, and dinucleotide. While these terms refer to the same basic concept, they may have slightly different meanings depending on the context in which they are used. For example, dinucleotide specifically refers to a molecule made up of two nucleotides joined together, rather than two amino acids. Regardless of the specific synonym used, dipeptides are important building blocks of larger proteins and play a critical role in many biochemical processes within the body.