| Acronym | Meaning |
| TSW | Torsional Spin Wave (type Of Hartree-Fock Wave Function) |
| PRP | Prion Protein |
| ESID | Environmental Statistics And Information Division |
| XBIS | X-ray Bremsstrahlung Isochromat Spectroscopy |
| CMF | Clay Minerals File (of Digitized X-ray Diffraction Traces) |
| APAF | Apoptosis Protease Activating Factor |
| UFL | Upper Flammable Limit |
| MCP | Major Capsid Protein |
| PREEN | Pacific Rim Energy And Environment Network |
| FIMS | Field Ionization Mass Spectrometry |