Rotary engine Meaning, Definition & Usage

  1. noun an internal-combustion engine in which power is transmitted directly to rotating components
  2. noun an internal-combustion engine having cylinders arranged radially around a central crankcase
    radial engine.

WordNet


Definitions
  1. steam engine in which the continuous rotation of the shaft is produced by the direct action of the steam upon rotating devices which serve as pistons, instead of being derived from a reciprocating motion, as in the ordinary engine; a steam turbine; called also rotatory engine.

Webster 1913