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wavemeter

American  
[weyv-mee-ter] / ˈweɪvˌmi tər /

noun

  1. a device for measuring the wavelength or frequency of a radio wave.


wavemeter British  
/ ˈweɪvˌmiːtə /

noun

  1. an instrument for measuring the frequency or wavelength of radio waves

"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

Etymology

Origin of wavemeter

First recorded in 1900–05; wave + -meter