rheotrope

== English == === Alternative forms === reotrope === Etymology === From rheo- +‎ -trope. === Noun === rheotrope (plural rheotropes) (dated) An instrument for reversing the direction of an electric current; synonym of commutator. ==== Related terms ==== rheostat === References === “rheotrope”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.