Definition of tachometer in English:

tachometer

Syllabification: ta·chom·e·ter
Pronunciation: /taˈkämitər, tə-
 
/

noun

  • An instrument that measures the working speed of an engine (especially in a road vehicle), typically in revolutions per minute.
    More example sentences
    • Drivers watch their tachometers, which monitor RPMs, to get an idea of how fast they are going.
    • I noted his tachometer, radar detector and exhaust pipe.
    • The built-in tachometers and rpm-based automatic shifters that are incorporated into some delay boxes/devices may not be used for any purpose.

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elaborate ornamentation of a vocal melody