| Acronym | Meaning |
| ALTACS | Automated Decision Logic Tactical Air Combat Simulation |
| PJ | Picojoule |
| ROH | Raeto-Romansh Language (ISO 639-2 Code) |
| SAS | Scandinavian Airline Systems - Second Avenue Subway - Situational Awareness System - Special Air Service - Studies |
| H | Hecto |
| ZF | Zettafarad |
| CFFZ | Call For Fire Zone |
| PT | Petatesla -Physical Training (in The Army) -Portugal (ISO 3166 Digram) |
| TIGER | Topologically Integrated Geographic Encoding And Referencing System |
| STK | Satellite Tool Kit |