| SYSTEM | |
| abbr. | Saves You Serious Time Energy And Money |
| abbr. el. | systematic interaction model |
| abbr. mil., WMD | system |
| system | |
| abbr. | syst; syst. |
| abbr. AI. | SI system |
| abbr. auto. | aided manufacturing system; gasoline injection system |
|
Air : 127 phrases in 11 subjects |
| Abbreviation | 54 |
| Aeronautics | 5 |
| Aviation | 31 |
| Ecology | 1 |
| Energy industry | 1 |
| Information technology | 1 |
| Meteorology | 1 |
| Military | 26 |
| NASA | 1 |
| Technology | 1 |
| Transport | 5 |