operameter

== English == === Etymology === From Latin opera (“work”) (plural of operis), opus + -meter. === Noun === operameter (plural operameters) (archaic) An instrument or machine for measuring work done, especially the number of rotations by a machine or wheel in manufacturing cloth. [1820] === References === “operameter”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.