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Definition of implosion

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im·plo·sion  audio  (m-plzhn) KEY  

NOUN:
  1. A violent collapse inward, as of a highly evacuated glass vessel.
  2. Violent compression.
  3. The inward collapse of a building that is being demolished in a controlled fashion by the weakening and breaking of structural members by explosives.
  4. Linguistics The pronunciation of a stop consonant with the breath drawn in.
ETYMOLOGY:
in- 2 + (ex)plosion


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The American Heritage® Dictionary of the English Language, Fourth Edition.
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