nuclear

nuclear /ˈnuːklijɚ/ Brit /ˈnjuːklijə/ adjective
nuclear
/ˈnuːklijɚ/ Brit /ˈnjuːklijə/
adjective
Britannica Dictionary definition of NUCLEAR
always used before a noun
1 
a  : of, relating to, producing, or using energy that is created when the nuclei of atoms are split apart or joined together
b  : having or involving nuclear weapons
2 
: of or relating to the nucleus of an atom