Definitions
from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun An aircraft instrument that indicates speed in Mach numbers.
from the GNU version of the Collaborative International Dictionary of English.
- noun an instrument for measuring the speed of an aircraft relative to the speed of sound.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun An
instrument that measures thespeed of anaircraft relative to that ofsound and displays it inMach numbers
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun speedometer for measuring the speed of an aircraft relative to the speed of sound
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