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1. (n.) tachometer
an instrument for measuring or indicating speed, esp. of rotation.
Etymology: (1800–10)
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| Definition of 'tachometer' |
Princeton's WordNet |
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1. (noun) tachometer, tach
measuring instrument for indicating speed of rotation
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| Definition of 'tachometer' |
Webster Dictionary |
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1. (noun) tachometer
an instrument for measuring the velocity, or indicating changes in the velocity, of a moving body or substance
2. (noun) tachometer
an instrument for measuring the velocity of running water in a river or canal, consisting of a wheel with inclined vanes, which is turned by the current. The rotations of the wheel are recorded by clockwork
3. (noun) tachometer
an instrument for showing at any moment the speed of a revolving shaft, consisting of a delicate revolving conical pendulum which is driven by the shaft, and the action of which by change of speed moves a pointer which indicates the speed on a graduated dial
4. (noun) tachometer
an instrument for measuring the velocity of the blood; a haematachometer
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Definitions of tachometer 
