nuclear
adjective(nu-cle-ar)
(weapons) deriving destructive energy from the release of atomic energy
Examples:
Nuclear war. 
Nuclear weapons. 
nuclear
adjective(nu-cle-ar)
constituting or like a nucleus
Examples:
Annexation of the suburban fringe by the nuclear metropolis. 
The nuclear core of the congregation. 
nuclear
adjective(nu-cle-ar)
of or relating to or constituting the nucleus of a cell
Examples:
Nuclear membrane. 
Nuclear division. 
nuclear
adjective(nu-cle-ar)
of or relating to or constituting the nucleus of an atom
Examples:
Nuclear physics. 
Nuclear fission. 
Nuclear forces.