| Acronym | Meaning |
| GPS | General Problem Solver - Global Positioning System |
| 4D | Four-dimensional (usually Three Spatial Plus One Temporal Dimension |
| SWT | Sea Water Tank |
| CSC | Closed Spacelike Curve (relativity) - Computer Security Centre |
| MPA | Megapascal |
| LW | Land Warrior - Low Water (nautical Charts) |
| GFCI | Ground Fault Circuit Interruptor (aka GFI) |
| WRT | With Respect To |
| NZD | New Zealand Dollar (ISO 4217 Currency Code) |
| CDEC | U.S. Combat Development Experimentation Center |