| Acronym | Meaning |
| MSC | Molecular Simulated Crystal Method (in Compton Profile Calcns.) |
| HSLA | High-strength Low-alloy (steel) |
| ODS | Oxide Dispersion-strengthened |
| UARS | Upper Atmosphere Research Satellite |
| SPIN | Silica Phase-immobilized Nitroxide |
| USLE | Universal Soil Loss Equation (erosion Model) |
| NEWWA | New England Water Works Association |
| ARIMA | Auto Regressive Integrated Moving Average Model |
| RMBPT | Relativistic Many-body Perturbation Theory |
| LEEPS | Low Energy Electron Point Source |