| Acronym | Meaning |
| RBS | Rutherford Backscattering |
| CELRF | Canadian Environmental Law Research Foundation |
| LGM | Last Glacial Maximum (most Recent Era Of Continental Glaciation; See Also PGP) |
| SQF | Second-quantized Formulation (in Many-body Quantum Theory) |
| SIMR | Swedish Institute For Metals Research |
| RESAM | Regional Soil Acidification Model |
| BPWTT | Best Practical Wastewater Treatment Technology |
| SCADS | Superfund Chemical Analysis Data System (see CARD) |
| RIOMETER | Relative Ionospheric Opacity Meter |
| GRM | Geopotential Research Mission (USA Satellite) |