Pronunciation: (on'līn', ôn'-), [key]
1. Computers.operating under the direct control of, or connected to, a main computer (opposed to off-line).
2. Radio.(of a network) supplying affiliated stations with all or a substantial part of their programming.
3. Television.of or pertaining to the final editing of a videotaped program.
4. done or accomplished while in operation or active service: on-line maintenance.
5. located on major routes or rail lines: on-line industries. Cf. off-line. Also,on' line',on'line'.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.