Emit (7)
I believe the answer is:
radiate
'emit' is the definition.
(I know that radiate is a more specific form of the action emit)
This is the entire clue.
(Other definitions for radiate that I've seen before include "Emit (rays or waves)" , "Beam brightly, spread heat" , "Spoke out" , "broadcast" , "A tirade (anag)" .)