Radiate, send forth (4)
I believe the answer is:
emit
This clue is a double definition.
'radiate' is the first definition.
(I know that radiate is a more specific form of emit)
'send forth' is the second definition.
(I've seen this in another clue)
(Other definitions for emit that I've seen before include "'Give off, odour say (4)'" , "Come out!" , "Exude" , "shed" , "Give off, gas say" .)