| Acronym | Meaning |
| PHS | Public Health Service |
| MEHT | Modified Extended Hueckel Theory |
| UFM | Ultrasonic Force Microscopy |
| BTS | British Toxicology Society |
| GVB | Generalized Valence Bond |
| OPW | Orthogonalized Plane Wave |
| MEPSAG | Minimum Energy Path Semiclassical Adiabatic Ground-state (tunneling Approxn.) |
| NRM | Natural Remanent Magnetization |
| UPD | Underpotential Deposition |
| AQCCT | Air Quality Criteria And Control Techniques |