Tachometer meaning

tă-kŏmĭ-tər, tə-
An instrument used to measure the rotations per minute of a rotating shaft.
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A device that indicates or measures the rotational speed of a spinning shaft.
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A device for measuring the revolutions per minute (RPMs) of a revolving shaft, as with the driveshaft of an automobile.
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A device for measuring or indicating velocity or speed, as of blood, a river, a machine, etc.
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Origin of tachometer

  • Greek takhos speed –meter

    From American Heritage Dictionary of the English Language, 5th Edition

  • From Wiktionary