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.
PNR redirects here. For other uses, see PNR (disambiguation) . In the airline and travel industries, a passenger name record (PNR) is a record in the database of a computer reservation system (CRS) that contains the itinerary for a passenger, or a group of passengers travelling together. The name of the passenger. 2  Contact details for the travel agent or airline office. 3  Ticketing details, either a ticket number or a ticketing time limit. 4  Itinerary of at least one segment, which must be the same for all passengers listed.