Typhoon being broadcast during revolution (7)
I believe the answer is:
cyclone
'typhoon' is the definition.
(thesaurus)
'being broadcast during revolution' is the wordplay.
'being broadcast' becomes 'on' (I've seen this in other clues).
'during' is an insertion indicator.
'revolution' becomes 'cycle' (I've seen this before).
'on' put inside 'cycle' is 'CYCLONE'.
(Other definitions for cyclone that I've seen before include "Spiralling wind" , "lots of wind" , "Violent windstorm" , "Depression - tropical storm" , "Hurricane" .)