Webster’s Revised Unabridged Dictionary · 1913
Rhysimeter
Rhy·sim′e·ter (rī·sĭm′ē·tẽr), n. [Gr. ῥύσις flow + -meter.] An instrument, acting on the principle of Pitot's tube, for measuring the velocity of a fluid current, the speed of a ship, etc.
Webster’s Revised Unabridged Dictionary · 1913
Rhy·sim′e·ter (rī·sĭm′ē·tẽr), n. [Gr. ῥύσις flow + -meter.] An instrument, acting on the principle of Pitot's tube, for measuring the velocity of a fluid current, the speed of a ship, etc.