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Definition of tachometer noun from the Oxford Advanced Learner's Dictionary

tachometer

noun

/tæˈkɒmɪtə(r)/

/tæˈkɑːmɪtər/

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a device that measures the rate that something turns and is used to measure the speed of an engine in a vehicle

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See tachometer in the Oxford Advanced American Dictionary

Check pronunciation: tachometer

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adverb

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