“SELF-REPLICATION occurs when an informational molecule (such as a nucleic acid) directs the spontaneous synthesis of a replica of itself. Mechanisms for self-replication can be autocatalytic, where a molecule acts as a template to make a direct copy of itself, or cross-catalytic, where two or more molecules of different informational content amplify one another.”
http://link.springer.com/referenceworkentry/10.1007%2F978-3-642-11274-4_1423