nu·cle·ar 
/ˈnu:klijɚ, Brit ˈnju:klijə/ adjective
always used before a noun /ˈnu:klijɚ, Brit ˈnju:klijə/ adjective 1 a : of, relating to, producing, or using energy that is created when the nuclei of atoms are split apart or joined together
▪ nuclear [=atomic] weapons/bombs ▪ a nuclear (power) plant ▪ nuclear fuel ▪ nuclear waste [=waste materials that are created when nuclear energy is produced]
b : having or involving nuclear weapons
▪ the nuclear [=atomic] age ▪ a nuclear war/attack ▪ nuclear powers [=countries that have nuclear weapons] 2 : of or relating to the nucleus of an atom
▪ nuclear [=atomic] physics/fission/fusion
▪ nuclear [=atomic] weapons/bombs ▪ a nuclear (power) plant ▪ nuclear fuel ▪ nuclear waste [=waste materials that are created when nuclear energy is produced]
b : having or involving nuclear weapons
▪ the nuclear [=atomic] age ▪ a nuclear war/attack ▪ nuclear powers [=countries that have nuclear weapons]
▪ nuclear [=atomic] physics/fission/fusion
