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Definition of sonic boom noun from the Oxford Advanced Learner's Dictionary

sonic boom

noun
 
/ˌsɒnɪk ˈbuːm/
 
/ˌsɑːnɪk ˈbuːm/
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  1. the explosive sound that is made when an aircraft travels faster than the speed of sound
    • We heard the sonic boom of a jet overhead.
    Topics Transport by airc2
See sonic boom in the Oxford Advanced American Dictionary
Check pronunciation: sonic boom

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