| Acronym | Meaning |
| QCISD(T) | Quadratic CI (with) Single (and) Double (excitations) (and) [triple Excitations Added Perturbatively] |
| BOA | Born-Oppenheimer Approxn. |
| EISCAT | European Incoherent Scatter Radar (atm. Sensing) |
| ROMNET | Regional Ozone Modeling For Northeast Transport |
| NSERC | Natural Sciences And Engineering Research Council (Canada) |
| DCPAES | Direct Current Plasma Atomic Emission Spectrometry |
| HGP | Hepatic Glucose Production |
| DHS | Double Heterostructure |
| ESEM | Electron Spin Echo Modulation |
| DCP-OES | Direct Coupled Plasma-optical Emission Spectroscopy |