| Acronym | Meaning |
| EEC | European Economic Community |
| STM | Scanning Tunneling Microscopy |
| WIG | W-inert Gas Welding |
| SVET | Scanning Vibrating Electrode Technique |
| CPM | Crucible Particle Metallurgy |
| MECI | Monoexcited Configuration Interaction |
| RSCA | Relativistic Semiclassical Approximation (for At. Scattering) |
| NERC | North American Electric Reliability Council |
| HIV | Human Immunodeficiency Virus |
| TOF | Time Of Flight |