| Acronym | Meaning |
| AEA-MO | All-electron Approxn.-mol. Orbital |
| LHSF | Local Hyperspherical Surface Functions (in Quantum Calcns. On Reactive Scattering) |
| UPOT | Union Pacific Oxidation Test |
| OTAG | Ozone Transport Assessment Group |
| PDFT | Perturbation Density-functional Theory |
| GMISS | Gridded Model Information Support System |
| RIOMETER | Relative Ionospheric Opacity Meter |
| PI | Polydispersity Index |
| EXGF(1) | Extended Group Function(1) (model Wave Function Accounting For Electron Correlation) |
| EACE | Enzyme Affinity Capillary Electrophoresis |