Definition of nuclear adjective from the Oxford Advanced American Dictionary

        

    nuclear

     adjective
    adjective
    NAmE//ˈnukliər//
     
    [usually before noun]
     
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  1. 1using, producing, or resulting from nuclear energy a nuclear power station the nuclear industry
  2. 2connected with weapons that use nuclear energy a nuclear weapon/bomb/missile nuclear-powered submarines a nuclear explosion/attack/war the country's nuclear capability (= the fact that it has nuclear weapons) nuclear capacity (= the number of nuclear weapons a country has)
  3. 3(physics) of the nucleus (= central part) of an atom nuclear particles a nuclear reaction
See the Oxford Advanced Learner's Dictionary entry: nuclear