| Binary system |
| Alkaline ecosystems |
| PC linkup system |
| Co-creator of the Reitwagen, the first internal-combustion motorcycle |
| Engine parts |
| Feature of Melvil Dewey's book classification system |
| ___ system (blood classification) |
| Genetically engineered, highly selective medical treatment |
| Buy now, pay later" system |
| Auto engine parts |
| Diagnostic lab system |
| System with dots and dashes |
| Goes kaput, as an engine |
| Aircraft-engine intakes |
| System of fixed attention, contemplation, concentration. |
| Paris underground system |
| Airline with missile defense systems |
| Aircraft-detection system |
| Shorthand system introduced in 1888 |
| Electronic detection system |
| America's economic system |
| Guns (the engine) |
| Ravine-crossing hauling systems |
| All systems go" signals |
| Audio system component |
| Airborne prescription-delivery system? |
| Maker of the Lynx and Jaguar systems |
| System espoused by tyrants |
| Classic cars that were the first to have Ram Air engines |
| Symptom of nervous system impairment |