| Acronym | Meaning |
| PML | Polymer Multi Layer |
| ORP | Oxidation-reduction Potential |
| APA | Adiabatic Perturbation Approxn. (for Quantum Calcns. On Fermi Superfluids) |
| GERM | Geochem. Earth Ref. Model |
| TOF | Time Of Flight |
| EXGF(1) | Extended Group Function(1) (model Wave Function Accounting For Electron Correlation) |
| POGO | Polar Orbiting Geophysical Observatory |
| ICSU | International Council Of Scientific Unions |
| CEPS | Chemically Enhanced Primary Sedimentation |
| ERP | Environmental Review Process |