| Acronym | Meaning |
| BCA | Binary-collision Approximation |
| HBGF | Heparin-binding Growth Factor |
| PPD | Purified Protein Derivative |
| ADP | Auger Depth Profiling |
| QCFF/PI | Quantum Mechanical Consistent Force Field Method For Pi-electron Systems |
| RED | Radiation Enhanced Diffusion |
| MSEP | Mean Square Error Of Prediction |
| GTG | Gaussian-type Geminal |
| HAOM | Hybrid Atomic Orbital Model |
| CIBO | Council Of Industrial Boiler Owners |