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Definition of "boom" []

  • To make a deep, resonant sound. (verb-intransitive)
  • To grow, develop, or progress rapidly; flourish: Business is booming. (verb-intransitive)
  • To utter or give forth with a deep, resonant sound: a field commander booming out orders. (verb-transitive)
  • To cause to grow or flourish; boost. (verb-transitive)
  • A deep resonant sound, as of an explosion. (noun)
  • To make a deep prolonged resonant sound, as of thunder or artillery fire (verb)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

  • To prosper or cause to prosper vigorously and rapidly (verb)
  • A deep prolonged resonant sound (noun)
  • The cry of certain animals, esp the bittern (noun)
  • A period of high economic growth characterized by rising wages, profits, and prices, full employment, and high levels of investment, trade, and other economic activity (noun)
  • Any similar period of high activity (noun)
  • The activity itself (noun)

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Use "boom" in a sentence
  • "The cool metal vibrated under his hand, and, even as he waited, a deeper vibration went through the wall, boom, _boom_, low and rhythmic, like the beating of some great hidden heart, like the heart of the mountain itself, vast and stony and old."
  • "_Boom, boom, boom_, it broke nearer and nearer, as if a vast cordon of cannon was being drawn around the horizon."
  • "_Boom, boom, boom_, it broke nearer and nearer as if a vast cordon of cannon was being drawn around the horizon."