rebroadcast Syllabification: (re·broad·cast)Pronunciation: /rēˈbrôdˌkast/Definition of rebroadcast verb (past and past participle rebroadcast) [with object] broadcast or relay (a program or signal) again. noun a repeated or relayed broadcast. Derivatives rebroadcaster noun rebroadcast in other Oxford dictionaries Definition of rebroadcast in the British & World English dictionary