nuclear

nuclear
nu‧cle‧ar W2 AC /ˈnjuːkliə $ ˈnuːkliər/ adjective [usually before noun]1. relating to or involving the nucleus (=central part) of an atom, or the energy produced when the nucleus of an atom is either split or joined with the nucleus of another atom:
    France’s reliance on nuclear energy
    a nuclear power station
    a nuclear-powered submarine
2. relating to or involving the use of weapons that use nuclear energy ⇨ anti-nuclear, conventional
    nuclear bomb/weapon/missile etc
    the threat of nuclear attack
    concern about the country’s nuclear weapons program
    With the collapse of the former Soviet Union, the possibility of a nuclear holocaust (=a nuclear war that destroys much of the Earth) was greatly reduced.
    a nuclear testing area