| Acronym | Meaning |
| SBA | Simulation-Based Acquisition - Sovereign Base Area |
| A2ATD OR A?ATD | Anti |
| IMU | International Mathematical Union |
| HMO | Health Management Organization |
| SSKP | Single-Shot Kill Probability |
| NPH | Normal Pressure Hydrocephalus |
| FOGC | Federal Oil And Gas Council |
| MMO | Massively Multiplayer Online (computer Game) |
| RTT | Round Trip Timing |
| USR | Universal System Resources (/usr |