| Acronym | Meaning |
| CASSS | California Separation Science Society |
| THC | Total Hydrocarbon |
| MEDO | Multipole Expansion Of Diatomic Overlap Approximation |
| TFE | Thermionic Fuel Element |
| IEAES | Ion Excited Auger Electron Spectroscopy |
| GAMESS | General Atomic And Molecular Electronic Structure System |
| INPADOC | International Patent Documentation Center |
| PTM | Perturbation Trajectory Method (in Gas-surface Collision Dynamics) |
| PTC | Positive Temperature Coefficient [elec. Conducting Material] |
| HMIX | Hazardous Materials Information Exchange |