| Acronym | Meaning |
| TOM | Transition Operator Method |
| CSP | Chiral Stationary Phase |
| AGCM | Adiabatic Generator Coordinate Method (for Energy Level Calcn.) |
| CBE | Coulomb-Bethe (for Electron-ion Scattering) |
| SAIS | Science And Applications Information System |
| PGR | Plant Growth Regulator |
| API | Air Pollution Index |
| LBM | Laser Beam Machining |
| SCC-IEH | Self-consistent Charge-iterative Extended Hueckel |
| IGC | International Geological Congress |