Offline
/ˈɔˌflaɪn/
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Definition
(adj) Of a system, currently not connected (generally electrically) to a larger network. For example, a power plant which is not connected to the grid, or a computer which is not connected to the Internet or to any other communications service.
Sentence Examples
Our server will be offline on October 20th for scheduled maintenance.
Tatoeba.org is offline for maintenance.
CEFR Practice Quiz
The system went ____ during the storm, leaving thousands of users unable to access their accounts.