WordWeb Online

1. (weapons) deriving destructive energy from the release of atomic energy
   "nuclear war";
   - atomic
    
2. (physics) of or relating to or constituting the nucleus of an atom
   "nuclear physics"; "nuclear fission"; "nuclear forces"
    
3. (biology) of or relating to or constituting the nucleus of a cell
   "nuclear membrane"; "nuclear division"
    
4. Constituting or like a nucleus
   "annexation of the suburban fringe by the nuclear metropolis"; "the nuclear core of the congregation"

See also: central, thermonuclear

Encyclopedia: Nuclear, biological and chemical attacks