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definitions

high-impact

adjective (prenominal)
  1. (of a plastic or other material) able to withstand great force
  2. (of aerobic or other exercise) placing great stress on various areas of the body
  3. informal having great effecthigh-impact sound
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

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