Definition of nuclear energy noun from the Oxford Advanced Learner's Dictionary

 

nuclear energy

 noun
noun
BrE
 
; NAmE
 
(also nuclear power)[uncountable] The power industry, Energy and physical forces
 
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a powerful form of energy produced by converting matter into energy by splitting the nuclei (= central parts) of atoms. It is used to produce electricity. See related entries: The power industry, Energy and physical forces
See the Oxford Advanced American Dictionary entry: nuclear energy