1. Communicating to a mass audience.
2. Transmitting by radio or television. A method of distribution for television and radio signals via a network of a few powerful radio transmitters that operate in the very high (VHF) and ultra high (UHF) frequency bands of the electromagnetic spectrum, and send a signal that is picked up by many less powerful receivers (televisions and radios) located mainly in homes. Broadcasting can be subdivided into terrestrial broadcasting and satellite broadcasting. See also digital transmission.