tachometer

[ ta-kom-i-ter, tuh- ]

noun
  1. any of various instruments for measuring or indicating velocity or speed, as of a machine, a river, or the blood.

  2. an instrument measuring revolutions per minute, as of an engine.

Origin of tachometer

1
First recorded in 1800–10; tacho- + -meter

Other words from tachometer

  • tach·o·met·ri·cal·ly [tak-uh-me-trik-lee], /ˌtæk əˈmɛ trɪk li/, adverb
  • ta·chom·e·try, noun

Words Nearby tachometer

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024

How to use tachometer in a sentence

  • It had been suggested that the revolutions in Africa occurred so often that only a tachometer could keep up with them.

    Hail to the Chief | Gordon Randall Garrett
  • His clock and his tachometer assured him that he was well past Easton.

    The Flying Reporter | Lewis E. (Lewis Edwin) Theiss
  • He watched his tachometer, which indicated his revolutions per minute.

    The Flying Reporter | Lewis E. (Lewis Edwin) Theiss
  • I guess the first thing that Lindy watched was the tachometer.

    Famous Flyers | David Goodger (goodger@python.org)
  • The engine was next started and the number of revolutions of the propellers counted by a tachometer.

    Langley Memoir on Mechanical Flight, Parts I and II | S. P. (Samuel Pierpont) Langley and Charles M. (Charles Matthews) Manly

British Dictionary definitions for tachometer

tachometer

/ (tæˈkɒmɪtə) /


noun
  1. any device for measuring speed, esp the rate of revolution of a shaft. Tachometers (rev counters) are often fitted to cars to indicate the number of revolutions per minute of the engine

Derived forms of tachometer

  • tachometric (ˌtækəˈmɛtrɪk) or tachometrical, adjective
  • tachometrically, adverb
  • tachometry, noun

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012