Irregular broadcast is copied (8)
I believe the answer is:
episodic
'irregular' is the definition.
(I've seen this before)
'broadcast is copied' is the wordplay.
'broadcast' indicates anagramming the letters (letters scattered or cast around).
'is'+'copied'='iscopied'
'iscopied' with letters rearranged gives 'EPISODIC'.
(Other definitions for episodic that I've seen before include "Serialised" , "Occurring irregularly - is copied accordingly" , "piecemeal" , "Occurring irregularly or in instalments" , "Is copied in irregular occurrence" .)