| Acronym | Meaning |
| IEL | Independent Electron (model In Ion-impact Ionization Calcns.) |
| PWHF | Plane-wave Hartree-Fock |
| SPR | Stroboscopic Pulse Radiolysis |
| CSIN | Chemical Substance Information Network |
| WTP | Willingness To Pay |
| TRD | Transition Radiation Detector |
| JPEG | Joint Photographic Expert Group |
| MORB | Mid-ocean Ridge Basalt |
| IMA | International Mineralogical Association |
| MCAO | Middle Cerebral Artery Occlusion |