- (n.) 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.
- (n.) An instrument for measuring the velocity or indicating changes in the velocity, of a moving body or substance.
- (n.) 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.
- (n.) An instrument for measuring the velocity of the blood; a haematachometer.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). tachometer. Retrieved September 20, 2026, from http://smartdefine.org/tachometer/definitions/2070038 |
| Chicago | Webster's. 2011. "tachometer" http://smartdefine.org/tachometer/definitions/2070038 (accessed September 20, 2026). |
| Harvard | Webster's 2011, tachometer, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/tachometer/definitions/2070038>. |
| MLA | Webster's. "tachometer" 28 May 2011. Web. 20 September 2026. <http://smartdefine.org/tachometer/definitions/2070038> |