| Acronym | Meaning |
| NBMO | Nonbonded Molecular Orbital |
| INDO/RZ | Intermediate Neglect Of Differential Overlap/Ridley-Zerner |
| BCR | Bubble Column Reactor |
| DME | Dielectric Midgap Energy (model) |
| CAT | Clear Air Turbulence |
| NIRS | Neutral Impact Radiation Spectroscopy |
| SAMO | Simulated Ab Initio Molecular Orbital |
| BAZ | Biologically Active Zones |
| SPE | Solar Proton Event |
| LSE | Liquid/solid Extraction |