Noun
(uncountable) The act of broadcasting by radio; transmission.
(countable) A broadcast.
Source: en.wiktionary.orgClub d'Essai and Cinq études de bruits Following Schaeffer's work with Studio d'Essai at Radiodiffusion Nationale during the early 1940s he was credited with originating the theory and practice of musique concrète. Source: Internet
The state broadcaster, Radiodiffusion Télévision Gabonaise (RTG), operates two main networks - a national network in French and a provincial network in French and vernacular languages. Source: Internet