| Acronym | Meaning |
| EELS | Electron Energy Loss Spectroscopy |
| OSW | Office Of Solid Waste (US EPA) |
| BLTM | Branched Lagrangian Transport [model] |
| RDS | Reflectance-difference Spectroscopy |
| HRS | Hyper-Rayleigh Scattering |
| CRC | Cooperative Research Council (automotive) |
| APS | Air Plasma Spraying |
| EESI | Environment And Energy Study Institute |
| GWSS | Groundwater Supply Survey |
| SCAB | South Coast Air Basin |