rhysimeter

== English == === Etymology === From Ancient Greek ῥύσις (rhúsis, “flow”) + -meter. === Noun === rhysimeter (plural rhysimeters) (obsolete) An instrument, similar to a pitot tube, for measuring the velocity of a fluid current, the speed of a ship, etc. === See also === flowmeter === References === “rhysimeter”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.