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Definition of ISDN abbreviation from the Oxford Advanced Learner's Dictionary

ISDN

abbreviation
 
/ˌaɪ es diː ˈen/
 
/ˌaɪ es diː ˈen/
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  1. integrated services digital network
    (a system for carrying sound signals, images, etc. along wires at high speed)
    • an ISDN internet connection
See ISDN in the Oxford Advanced American Dictionary
trait
noun
 
 
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