| Acronym | Meaning |
| MINDO/3L | Modified Intermediate Neglect Of Differential Overlap/3 For Limited Electrons |
| EFP | Effective Fragment Potential Method |
| OSRSCF | Open-shell Restricted SCF |
| EFS | Elec. Field Stimulation |
| L2MS | Laser-desorption Laser-ionization Mass Spectrometry |
| QITMS | Quadrupole Ion Trap Mass Spectrometry |
| WRITE | Waste Reduction Innovative Technology Evaluation (US EPA) |
| VQP | Variable Quadratic Propagator (in Quantum Calcns.) |
| LEES | Local Excess-electron State (a Mol.-crystal Wave Function) |
| ART | Absolute Rate Theory |