| Acronym | Meaning |
| PO-TDSE | Periodic Orbit-time Dependent Schroedinger Equation |
| CSA | Chemical-shift Anisotropy |
| PEMA | Pseudoeffective Mass Approxn. (for Impurity Energy Levels In Semiconductors) |
| AFRICA | Asbestos Fiber Regular Informal Counting Arrangement |
| ICCD | Intensified Charge-coupled Device |
| CSIRO | Commonwealth Scientific And Industrial Research Organization |
| STB | Semiempirical Tight Binding |
| CLD | Chronic Lung Disease |
| IMPPT | Interaction Moeller-Plesset Perturbation Theory |
| VVHAP | Very Volatile Hazardous Air Pollutant |