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Definition of A-bomb noun from the Oxford Advanced Learner's Dictionary

A-bomb

noun
 
/ˈeɪ bɒm/
 
/ˈeɪ bɑːm/
(also atomic bomb, atom bomb)
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  1. a bomb that explodes using the energy that is produced when an atom or atoms are splitTopics War and conflictc2
See A-bomb in the Oxford Advanced American Dictionary
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