| Acronym | Meaning |
| UWT | Under Water Telephone |
| AGS | Alaska Ground Station (LandSat) |
| CCK | Cholecystokinin -Cocos (Keeling) Islands (ISO 3166 Trigram) |
| NACISA | NATO Communications And Information Systems Agency |
| PAYD | Pay As You Drive |
| YC | Yottacoulomb |
| GEO | Geostationary Earth Orbit -Georgia (ISO 3166 Trigram) |
| HALT | Hungry Angry Lonely Tired |
| VTOL | Vertical Take-Off & Landing |
| MT | Malta (FIPS 10-4 Country Code; ISO 3166 Digram) - Megatesla - Montana (postal Symbol) -Motor Transport (military) |