plug-in adjective - definition in the Business English Dictionary - Cambridge Dictionaries Online

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English definition of “plug-in”

plug-in

adjective ( also plugin)
 
 
IT relating to things that can be added to a computer system to make it work faster or have more features: a plug-in card/keyboard/modem If your PC has no USB ports, you can add them with a plug-in card.
able to be connected using a plug (= object with metal pins for connecting equipment to an electricity supply): a plug-in electric car/hybrid Alternatively, plug-in timer switches can be bought from hardware stores.
(Definition of plug-in adjective from the Cambridge Business English Dictionary © Cambridge University Press)
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