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adjective Physics.
  1. of or relating to an oscillating system that is not undergoing simple harmonic motion.
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Origin of anharmonic

an-1 + harmonic; modeled on French anharmonique
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for anharmonic


  1. physics of or concerned with an oscillation whose frequency is not an integral factor or multiple of the base frequency
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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