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machmeter

[mahk-mee-ter, mak-]
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noun Aeronautics.
  1. a device that indicates airspeed relative to the speed of sound.
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Origin of machmeter

mach + -meter
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for machmeter

Machmeter

noun
  1. an instrument for measuring the Mach number of an aircraft in flight
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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