[wahng-kuh
l, wang-; Ger. vahng-kuhl] 
| Fe⋅lix [fee-liks; Ger. fey-liks] , born 1902, German engineer: inventor of rotary engine. |
| an internal-combustion rotary engine that utilizes a triangular rotor that revolves in a chamber (rather than a conventional piston that moves up and down in a cylinder): it has fewer moving parts and is generally smaller and lighter for a given horsepower. |