| Acronym | Meaning |
| DWTM | Distorted Wave T-matrix (for Electron-atom Scattering) |
| AQPS | Air Quality Prediction System |
| HBJ | Hougen-Bunker-Johns (Hamiltonian For Mol. Calcns.) |
| CIRRIS | Cryogenic InfraRed Radiance Instrument For Shuttle |
| REIMEP | Regulation European Interlab. Measurement Evaluation Program |
| GIPT | Granular Injection Paint Technology |
| ECF | Electric Crystal Field |
| NPOC | Nonpurgeable Organic Carbon |
| WSF | Water Soluble Fraction |
| GCL | Geosynthetic Clay Liner |