backup - definition in the American English Dictionary - Cambridge Dictionaries Online

Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “backup”

See all translations

backup

noun [C/U]  us   /ˈbækˌʌp/

backup noun [C/U] (SUPPORT)

support or help, or someone or something that provides support or help: a backup generator They didn’t realize when they hired him that he had a backup band. We want to have the factual backup to make our case.

backup noun [C/U] (EXTRA COPY)

an extra copy of information on a computer that is stored separately: Did you make a backup of these files?
(Definition of backup from the Cambridge Academic Content Dictionary © Cambridge University Press)
What is the pronunciation of backup?
Add Cambridge dictionaries to your browser to your website

Definitions of “backup” in other dictionaries

Word of the Day

cost/charge the earth

to cost, charge, etc. a lot of money

Word of the Day

The language of elections

by Liz Walter,
April 22, 2015
On May 7th, citizens of the UK will be going to the polls (having an election) to decide who will form the next government. This kind of election is known as a general election. The country is divided into 650 areas, called constituencies. Each constituency elects a member of parliament (MP) to

Read More 

dumbwalking noun

April 20, 2015
walking slowly, without paying attention to the world around you because you are consulting a smartphone He told me dumbwalking probably wouldn’t be a long-term problem.

Read More