backup Meaning, definition in Cambridge English Dictionary
Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

Meaning of "backup" - English Dictionary

See all translations

backupnoun

uk   us   /ˈbæk.ʌp/
B2 [C or U] (someone or something that provides) support or help, or something that you have arranged in case your main plans, equipment, etc. go wrong: We're going to need some professional backup for this project. The party is going to be outdoors, so we'll need to organize somewhere as a backup in case it rains. Remember, your colleagues are your backup system when things go wrong.B2 [C] a copy of information held on a computer that is stored separately from the computer: Before we leave work each day, we make a backup of all the records we have entered into the computer that day. The department's backup disks are all stored in a different building. [C] US a player who plays when the person who usually plays is not available: He's a backup for the Dallas Cowboys.
More examples

backupadjective [only before noun]

uk   us   /ˈbæk.ʌp/ US (UK backing)
supporting the main singer, performer, etc : backup vocals Beyoncé's backup dancers
(Definition of backup from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
What is the pronunciation of backup?
Add Cambridge dictionaries to your browser to your website

More meanings of “backup”

Definitions of “backup” in other dictionaries

Word of the Day
straight

the straight part of a racetrack (= the track on which competitors race)

Word of the Day

Are you a glass-half-full person? (Everyday Idioms)
Are you a glass-half-full person? (Everyday Idioms)
by Kate Woodford,
July 29, 2015
A reader of this blog recently asked for a post on idioms that are used in everyday English. This seemed like a reasonable request. After all, if you are going to make the effort to learn a set of English idioms, you want those idioms to be useful. The question, then, was

Read More 

exoskeleton noun
exoskeleton noun
July 27, 2015
a robotic device which goes around the legs and part of the body of a person who cannot walk and allows them to move independently and in an upright position The device, known as an exoskeleton, is strapped to the outside of a person’s limbs and can then be controlled by them.

Read More