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Definition: offline

(1) Not connected to the Internet, online service or internal network. See offline file.

(2) Not connected to or not installed in the computer. If a terminal, printer or other device is physically connected to the computer, but is not turned on or in ready mode, it is considered offline. Disks and tapes that have been demounted and stored in the data library are also considered offline. Contrast with online.

(3) "Not with it." Slang for someone who is uninformed. See 404.