- rotary engine - an internal-combustion engine in which power is transmitted directly to rotating components
--1 is a kind of internal-combustion engine, ICE
--1 has particulars:turbine; Wankel engine, Wankel rotary engine, epitrochoidal engine - radial engine, rotary engine - an internal-combustion engine having cylinders arranged radially around a central crankcase
--2 is a kind of internal-combustion engine, ICE
- radial engine, rotary engine - an internal-combustion engine having cylinders arranged radially around a central crankcase