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

hydrogen bomb

noun
 
/ˈhaɪdrədʒən bɒm/
 
/ˈhaɪdrədʒən bɑːm/
(also H-bomb)
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  1. a very powerful nuclear bombTopics War and conflictc2
See hydrogen bomb in the Oxford Advanced American Dictionary
Check pronunciation: hydrogen bomb

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trait
noun
 
 
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