| Acronym | Meaning |
| PZ | Panama Canal Zone (ISO 3166 Digram; Obsolete 1980) -Pickup Zone |
| ATAC | Air Transportable Acoustic Communications |
| VRSG | Virtual Reality Scene Generator |
| ICRAF | International Centre For Research In Agroforestry (a.k.a. World Agroforestry Centre Since 2002) |
| LX | Luxembourg (amateur Radio ITU Prefix) - Swiss International Airlines (IATA Code) |
| KPNO | Kitt Peak National Observatory |
| SLPH | Standard Litre Per Hour (air Flow) |
| AFRRI | (U.S.) Armed Forces Radiobiology Research Institute |
| EIRP | Effective Isotropic Radiated Power |
| DNDO | U.S. Domestic Nuclear Detection Office |