Definition of tachometer
: a device for indicating speed of rotation
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Recent Examples of tachometer from the Web
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With a toggle of the steering wheel control, the tachometer becomes a 7-inch space to roll through audio or phone commands, view nav directions, or check active fuel economy or trip meters.
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The large tachometer indicates a 6,500 rpm redline while the speedometer is marked to an overly optimistic 160 mph.
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In front of you is the main instrument display—analog physical dials for the speedometer (left) and tachometer (center), plus a small, also circular, multifunction display on the right.
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The instrument panel has an analog tachometer and speedometer bracketing another HD display that can be customized to show the usual bits of data—mileage, radio, navigation, etc.
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The TourX cockpit is pretty basic: four analog indicators (speedometer, coolant temp, fuel, and tachometer) with a small digital display taking up the bottom middle of the instrument panel.
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For instance, the vehicle’s traditional tachometer that displays engine speed is replaced with a dial showing when the car is operating in pure electric mode.
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On the inside, the little SUV has a passing resemblance to the Sonic, with a tachometer laid next to an LCD display in the instrument cluster—a design cue inspired by motorcycles.
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But the cabin is pure Porsche, with exquisite materials, perfectly balanced controls, and the brand’s familiar instrument cluster with a central tachometer and digital speedo.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'tachometer.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
Did You Know?
A tachometer is literally a "speed-measurer", since the Greek root tach- means "speed". This is clear in the names of the tachyon, a particle of matter that travels faster than the speed of light (if it actually exists, it's so fast that it's impossible to see with any instrument), and tachycardia, a medical condition in which the heart races uncontrollably. Since the speed that an auto tachometer measures is speed of rotation of the crankshaft, the numbers it reports are revolutions per minute, or rpm's.
Origin and Etymology of tachometer
Greek tachos speed + English -meter
TACHOMETER Defined for English Language Learners
Definition of tachometer for English Language Learners
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: a device that measures how fast something (such as a wheel) is turning
Learn More about tachometer
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See words that rhyme with tachometer Britannica.com: Encyclopedia article about tachometer
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