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Etymology edit

cyclo- +‎ -meter

Noun edit

 
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cyclometer (plural cyclometers)

  1. (cycling) A device that counts the revolutions of a bicycle wheel in order to indicate distance travelled.
    Synonym: cyclocomputer
    • 1887, Thomas Stevens, chapter IX, in Around the World on a Bicycle[1], Vol. I: From San Francisco to Teheran, London: Sampson Low [] , pages 244–246:
      While here at Constantinople I received by mail from America a Butcher spoke cyclometer, and on the second visit to Prinkipo I measured the road which has been made around half the island; the distance is four English miles and a fraction.
  2. An instrument for measuring circular arcs.
  3. (historical) A machine used to decrypt Enigma machine ciphers.