| Acronym | Meaning |
| SSSP | Simulation Of Single Sludge Processes |
| CPE | Cloud Point Extraction |
| PNDDO | Partial Neglect Of Diatomic Differential Overlap |
| POSCO | Pohang Steel Company |
| LAST | Lowest Anticipated Service Temperature |
| HUG | HART User Group |
| DOC | Department Of Conservation |
| COSHH | Control Of Substances Hazardous To Health (UK) |
| TPW | Transformed Plane Wave Method |
| POGO | Polar Orbiting Geophysical Observatory |