| Acronym | Meaning |
| RUSTIC | Risk Of Unsaturated/saturated Transport And Transformation Of Chemical Concentrations |
| NADB | National Air Data Branch (US EPA) |
| SCAUA | Semiclassical Approxn. United Atom |
| DIA | Drug Information Association |
| RS-HFPT | Rayleigh-Schroedinger Hartree-Fock Perturbation Theory |
| DME | Dimethyl Etherpar |
| LCP | Local Complex Potential (in Electron-atom Scattering) |
| CHA | Chemical Hamiltonian Approach |
| KLN | Potassium Lithium Niobate |
| AFOE | Advanced Fiber Optic Echelle Spectrometer |