velocimeter noun.
[vɛlǝ'sɪmɪtǝ] M19.[from Latin veloc-, velox swift + -I- + -METER.]An instrument or device for measuring the speed or velocity of engines, vessels, projectiles, etc.
■ velocimetry noun the measurement of speed, esp. speed of flow, by special techniques
M20. [TahlilGaran] English Dictionary ▲