| Acronym | Meaning |
| SAB | Science Advisory Board (USEPA) |
| UPS | UV Photoelectron Spectroscopy |
| REPELS | Reemitted Positron Energy Loss Spectroscopy |
| NEBLA | Non-equilibrium Boundary Layer Analysis |
| HUD | Housing And Urban Development |
| SIC | Self-interaction Correction (in Exchange-energy Calcns.) |
| OD | Optical Density |
| HSWA | Hazardous And Solid Waste Amendments Of 1984 |
| GATE | GARP Atlantic Tropical Experiment |
| TNRCC | Texas Natural Resource Conservation Commission |