Definition of telecommunications noun from the Oxford Advanced American Dictionary

 

telecommunications

 noun
noun
NAmE//ˌtɛləkəˌmyunəˈkeɪʃnz//
 
(informal telecom)[uncountable]
 
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the technology of sending signals, images, and messages over long distances by radio, telephone, television, satellite, etc. technological developments in telecommunications the telecommunications industry
telecommunication
 
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(informal telecom
 
)
adjective [only before noun] a telecommunication company
See the Oxford Advanced Learner's Dictionary entry: telecommunications