Definition of boom verb from the Oxford Advanced Learner's Dictionary

     

    boom

     verb
    verb
    BrE BrE//buːm//
     
    ; NAmE NAmE//buːm//
     
    Verb Forms present simple I / you / we / they boom
    BrE BrE//buːm//
     
    ; NAmE NAmE//buːm//
     
    he / she / it booms
    BrE BrE//buːmz//
     
    ; NAmE NAmE//buːmz//
     
    past simple boomed
    BrE BrE//buːmd//
     
    ; NAmE NAmE//buːmd//
     
    past participle boomed
    BrE BrE//buːmd//
     
    ; NAmE NAmE//buːmd//
     
    -ing form booming
    BrE BrE//ˈbuːmɪŋ//
     
    ; NAmE NAmE//ˈbuːmɪŋ//
     
    Economy
     
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    make loud sound
  1. 1[intransitive] to make a loud deep sound Outside, thunder boomed and crashed.
  2. 2[transitive, intransitive] to say something in a loud deep voice + speech ‘Get out of my sight!’ he boomed. boom (out) A voice boomed out from the darkness. He had a booming voice.
  3. of business/economy
  4. 3[intransitive] to have a period of rapid growth; to become bigger, more successful, etc. By the 1980s, the computer industry was booming. Business is booming! See related entries: Economy
  5. Word Originverb senses 1 to 2 late Middle English (as a verb): ultimately imitative; perhaps from Dutch bommen ‘to hum, buzz’. verb sense 3 late 19th cent. (originally US): probably from boom ‘a loud sound’.Extra examples A voice from the loudspeaker boomed out, ‘Good evening, ladies and gentlemen’. Loud music boomed from the public-address system. A crash of thunder boomed so loudly that the floor shook. The club scene was booming. The ship’s gun boomed and the shot fell only a hundred metres away. Tourist numbers have boomed in recent years.
See the Oxford Advanced American Dictionary entry: boom