broadcasting has definitions from the field of telecommunications
1
[ noun ] (telecommunications) a medium that disseminates via telecommunications

Used in print

(Musical America, LXXXI:5...)

His life-long friend , Serge_Koussevitzky , gave unreservedly of his praise and brilliant performances in Boston , New_York , and Washington , D._C. , to_which he added broadcastings and recordings for the whole nation .

Of_course , it must_not be forgotten that in achieving this historical feat , Prokofieff had the vast resources of his people behind him ; time and economic security ; symphony_orchestras , opera and ballet_companies ; choruses , chamber_music ensembles ; soloists ; recordings ; broadcastings ; television ; large and eager audiences .

2
[ noun ] (telecommunications) taking part in a radio or tv program
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