telecommunications /ˌtɛlɪkəˌmjuːnəˈkeɪʃənz/ noun /ˌtɛlɪkəˌmjuːnəˈkeɪʃənz/
noun
Learner's definition of TELECOMMUNICATIONS
[plural]
: the technology of sending and receiving signals, images, etc., over long distances by telephone, television, satellite, etc.电信;电讯 —
often used before another noun常用于另一名词前