the number of waves in one centimeter of light in a given wavelength; the reciprocal of the wavelength.
Origin of wave number
First recorded in 1900–05
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physics the reciprocal of the wavelength of a waveSymbol: ν, σ
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
The number of wave cycles per unit distance for a wave of a given wavelength.
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