The chemical process by which the action of a solvent or a change in physical condition, as in pressure or temperature, causes a molecule to split into simpler groups of atoms, single atoms, or ions. The separation of an electrolyte into ions of opposite charge.
ticket designator: a code on airline tickets to indicate what type of discount is applied, such as for a child or infant, or airline employee.
Because the term record locator is usually used to refer to a PNR the two terms can become confused. When a reservation is made a PNR is created in the system used by the person making the booking. This PNR will have a record locator. If the booking has been made through the airline and the only flight(s) are operated by the airline making the reservation only one PNR will exist.