ETYM Latin dissociatio: cf. French dissociation.
In chemistry, the process whereby a single compound splits into two or more smaller products, which may be capable of recombining to form the reactant.
Where dissociation is incomplete (not all the compound's molecules dissociate), a chemical equilibrium exists between the compound and its dissociation products. The extent of incomplete dissociation is defined by a numerical value (dissociation constant).
1. The act of removing from association.
2. The state of being separate and unconnected; SYN. disassociation.