supercritical mass
nucleopleomorphism
fissiogenic
water-cooled reactor
radioactive material
liquid metal reactor
karyolemma
radiochromium
radiotechnetium
radioterbium
radiocopper
fissile
initiator
spinthariscope
gas-cooled reactor
radioruthenium
fuel rod
radiothallium
radiodecay
high-level radioactive waste
radioantimony
radiocaesium
criticality accident
prenuclear
atomic number 88
Ra
element 115
radioactive
radiopalladium
atomic number 115
Uup
plutonium bomb
radium
rainout
radiozinc
radioisotope
ununpentium
nuclear envelope
radiowaste
radiovanadium
radwaste
radioytterbium
tacnuke