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antinoise

[an-tee-noiz, an-tahy-]
adjective
  1. designed to reduce or ban excessively loud sound, as of jet engines or traffic: antinoise legislation.
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Origin of antinoise

First recorded in 1905–10; anti- + noise
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for antinoise

antinoise

noun
  1. sound generated so that it is out of phase with a noise, such as that made by an engine, in order to reduce the noise level by interference
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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