Emitted (6)
(Other definitions for released that I've seen before include "Liberated" , "free after imprisonment?" , "Set free" , "Let out - let out again" , "Sent from prison" .)
'emitted' is the definition.
(radiating is a kind of emitting)
This is all the clue.
(Other definitions for radiated that I've seen before include "Sent out beams or waves, like house heater" , "Emitted in the form of rays or waves" .)
(Other definitions for exuded that I've seen before include "Oozed out or showed freely" , "Seeped" , "Discharged slowly" , "Sweated" , "Gave out or gave off" .)
(Other definitions for issued that I've seen before include "Published, brought out" , "released" , "Put out (a publication)" , "Sent out or distributed" , "Published and came forth" .)