An operating mode in which the electronic terminal does not connect to a central computer source. The purchase is authorised without checking with the Card Issuer or their agent. The transaction is later transferred to the processing system for payment.
A condition when the computerized system goes down and the back up system is utilized to continue processing data, e.g., register system, printing invoices. 
Access to information by mail, telephone, facsimile, or other non- direct interface. 
Storage classification that requires users to perform a manual action to access information. Thus information stored on a magnetic tape or disk not directly accessible by a computer is considered to be off-line.
The onward carriage of a through inter-airport removal or a through transit, by a carrier who is not the inward carrier of the goods.
Process carried out while a recording is not playing. For example, some computer-based processes have to be carried out off-line as the computer isn't fast enough to carry out the process in real time.
[adj] - (transportation) not on a regular route of a transportation system 2. [adj] - (computer science) not connected to a computer network
adjective not connected to a computer network; `off-line resources`
Driving off the best racing line. Drivers will go off line to attempt a pass or to move out of the way of faster cars.