telecommunication, science and practice of transmitting information by electromagnetic means. Modern telecommunication centres on the problems involved in transmitting large volumes of information over long distances without damaging loss due to noise and interference.

Telecommunication is the long-range transmission of information by electromagnetic means. Since its creation, the telecommunications industry has developed further with new technology, such as the telephone, radio, television and computers.

Definition of telecommunication. 1 : communication at a distance (as by telephone) 2 : technology that deals with telecommunication —usually used in plural.

The definition was later reconfirmed, according to Article 1.3 of the Radio Regulations (RR), telecommunication, which defined it as "Any transmission, emission or reception of signs, signals, writings, images and sounds or intelligence of any nature by wire, radio, optical, or other electromagnetic systems".