Meaning of “sonic boom” in the English Dictionary

british dictionary

"sonic boom" in British English

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sonic boomnoun [ C usually singular ]

uk /ˌsɒn.ɪk ˈbuːm/ us /ˌsɑː.nɪk ˈbuːm/

Examples from literature

  • A sonic boom is a very loud noise that happens when something travels faster than the speed of sound. Why does this happen? 
  • He was the first man to fly faster than the speed of sound, the first man to break the sound barrier and hear a sonic boom. 
  • Millions of years ago, dinosaurs made sonic booms. 

(Definition of “sonic boom” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)