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English definition of “app”

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app

noun [C]
 
 
/æp/
IT abbreviation for application or application program: a computer program that is designed for a particular purpose: After plugging the unit into your wired network, you run a little app on your PC that searches the network to locate the camera. →  See also killer app
IT, COMMUNICATIONS abbreviation for application or application program: a small computer program that you can download onto a mobile phone: There are apps for everything, from learning Swedish to booking cinema tickets.
(Definition of app from the Cambridge Business English Dictionary © Cambridge University Press)
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