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atomic energy

noun
🔊/əˌtɒmɪk ˈenədʒi/
🔊/əˌtɑːmɪk ˈenərdʒi/
(also atomic power
🔊/əˌtɒmɪk ˈpaʊə(r)/
🔊/əˌtɑːmɪk ˈpaʊər/
, nuclear energy, nuclear power)
[uncountable]
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  1. a powerful form of energy produced by changing matter into energy by splitting the nuclei (= central parts) of atoms. It is used to produce electricity.Topics The environmentc1, Physics and chemistryc1