- a copy or duplicate version, especially of a file, program, or entire computer system, retained for use in the event that the original is in some way rendered unusable.
- a procedure to follow in such an event.
Origin of backup
Examples from the Web for backup
Sometimes, they had a backup aim if their main goal fell through as the night dragged on.The Craziest Date Night for Single Jews, Where Mistletoe Is Ditched for Shots|Emily Shire|December 26, 2014|DAILY BEAST
In early October, Health Republic allowed me to submit a “grievance claim” which I filed, along with a pile of backup documents.
At 12:02 p.m., Wilson called in his location and asked the dispatcher for backup.
Backup dancers materialize, sparking a torrent of eye-catching choreography.The Making of Kiesza: From Navy Sharpshooter to Beauty Queen to Pop Diva|Marlow Stern|October 20, 2014|DAILY BEAST
She retreated into the lobby, but only to call for backup and an ambulance.Manhunt for a Cop-Hating Pennsylvania ‘Survivalist’|Michael Daly|September 17, 2014|DAILY BEAST
My cochlea struck twelve noon and a HUD appeared with my weekly backup reminder.
Now she was off to restore herself from a backup made before she met me.
She could swap out a dead bot for a backup in five minutes flat, which is all that crowd-control would permit.
You were restored from a backup about eight weeks ago, I see.
“Debra had herself refreshed from backup after we planned it,” Dan went on, as though no one was talking.
Word Origin and History for backup
see back up.