| Acronym | Meaning |
| ISVM | Iterative Schwinger Variational Method |
| BO | Bond Orbital |
| GWB | Gopinathan-Whitehead-Bogdanovic (Fermi-hole Parameters) |
| ESEM | Electron Spin Echo Modulation |
| HACS | Hazard Assessment Computer System |
| ADAM | Angular Distribution Auger Microscopy |
| BKW | Bobylev-Krook-Wu (method For Solving The Boltzmann Equation For A Mol. System) |
| GTN | Global Trend Network |
| ICOS | Interactive Computer Optimization Of HPLC Sepns. |
| PSS | Perturbed Stationary State |