| Acronym | Meaning |
| GNVP | Generalized Newton Variational Principle |
| APG | Antisymmetrized Product Of Geminals (wave Function) |
| IDEAL | Inhalation, Deposition And Exhalation Of Aerosols In/from The Lungs |
| FAS | Fatty Alcohol Sulfates (surfactants) |
| GDP | Guanosine 5'-diphosphate |
| PPAD | Parallel-plate Avalanche Detector |
| BHT | Bottom-hole Temperature |
| ENC | Effective Nuclear Charge (model For Mol. Property Calcns.) |
| DPF | Diesel Particulate Filter |
| CCS | Corrected Coupled-states (method For Mol.-scattering Calcns.) |