nonradioactive
cold
unfissioned
hot
nonfissioned
radioactive
active material
unrayed
radioterbium
Fl
flerovium
radioactively
radiotungsten
unirradiated
radiohelium
uncontaminating
clean
radiocontamination
radioactive material
unfissionable
nonfissionable
radiotin
radiodecay
radio-
unstable
radiohafnium
radiobarium
radioniobium
radiotantalum
radioactive disintegration
nuclear decay
radionuclide
radiooxygen
nuclear disintegration
inirradiated
radiorhenium
radioquiet
electron radiation
beta radiation
beta ray
unprotonated
beta emitter
radiocerium
anisotomic
nonfallout
radioactivating
disintegration
radiocopper
radiocontaminated
radiocesium