放射

to radiate / radioactive

to put / to place / to release / to free / to let go / to let out / to set off (fireworks)

old variant of 射[she4]

to shoot / to launch / to allude to / radio- (chemistry)

radioactive

residual radioactivity

radiological operations

radioimmunoassay

radiology

radioactive isotope / radioisotope

radioactive waste

radioactive hot spot

radioactive material

radiophosphor

low-level waste