| Acronym | Meaning |
| GPC | Gel Permeation Chromatography |
| ERC | Emissions Reduction Credit |
| FCHF | Frozen-core Hartree-Fock |
| COMPREHEND | Community Programme Of Research On Environmental Hormones And Endocrine Disrupters |
| LEMO | Lowest Empty Molecular Orbital (equivalent To LUMO) |
| REO | Rare Earth Oxide |
| PTS | Position-tagged Spectroscopy |
| TDS | Total Dissolved Solids |
| EPKR | Electrochem. Polarization Kinetic Reactivation |
| NCEP | National Centers For Environmental Prediction |