| Acronym | Meaning |
| KCMO | Kansas City |
| YI | Serbia And Montenegro (deprecated FIPS 10-4 Country Code |
| PX | Post EXchange |
| AAR | After-Action Review - Association Of American Railroads |
| 4D | Four-dimensional (usually Three Spatial Plus One Temporal Dimension |
| WMI | Wildlife Management Institute |
| FIFO | First In |
| FMECA | Failure Modes And Effect Criticality Analysis |
| DMOS | Double Diffused MOS Transistor (dee-moss) |
| ALSP | Aggregate Level Simulation Protocol |