| Acronym | Meaning |
| IPMI | International Precious Metals Institute |
| FGEF | Federal Geographic Encoding Format |
| STE | Septic Tank Effluent |
| IRE | Interferon-responsive Element |
| LIDAR | Laser Intensity Direction And Ranging |
| RVD | Regulatory Volume Decrease |
| IACS | International Annealed Copper Standard |
| NRT | National Response Team |
| DO | Diatomic Orbital |
| TCL-GME | Time-convolutionless Generalized Master Equation (in Quantum Tunneling Calcns.) |