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nuclear

adjective (PHYSICS)
 
 
/ˈnjuː.klɪər/ US  /ˈnuː.kliː.ɚ/ specialized

Definition

relating to the nucleus of an atom: nuclear fission/fusion/physicsAtoms, molecules and sub-atomic particles
(Definition of nuclear adjective (PHYSICS) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
Focus on the pronunciation of nuclear