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velocimeter

[vee-loh-sim-uh-ter, vel-oh-]
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noun
  1. any of various instruments for measuring velocity, as of a wave in water or of sound in air.

Origin of velocimeter

First recorded in 1842; veloci(ty) + -meter
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
velocimeter in Science

velocimeter

[vē′lō-sĭmĭ-tər, vĕl′ō-]
  1. A device that utilizes the Doppler effect to measure the speed of sound in water. Developed by the US Army Corps of Engineers, a velocimeter transmits a pulse of sound through water and measures its echo for changes in either pitch or frequency. Oceanographers employ velocimeters to study the interior structure of breaking waves; they are also used in hydraulic engineering and to study fluid flow.
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