Contrarotation
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contrarotation — noun Application of the maximum power of usually a single piston or turboprop engine to drive two propellers in opposite rotation. See Also: contrarotating … Wiktionary
contrarotation — con·tra·rotation … English syllables
contrarotation — |kän.trə+ noun Etymology: contra + rotation : rotation contrary to another rotation (as of a propeller) … Useful english dictionary
contrarotating — adjective Rotating in two directions by contrarotation … Wiktionary
gear pump — noun : a rotary pump consisting of two meshing gear wheels in a suitable casing whose contrarotation entrains the fluid on one side and discharges it on the other * * * gear pump, a type of pump with two meshing gears that rotate to move thick… … Useful english dictionary