| Acronym | Meaning |
| ISRM | International Society For Rock Mechanics |
| CSDW | Centrifugal Sudden (or Coupled States) Distorted Wave (methodfor Reactive Mol. Collisions) |
| RSM | Reduction Symmetry Method (in Crystal Field Theory) |
| HMC SCF | Hybrid Multiconfiguration Self-consistent Field |
| MSG | Monosodium Glutamate |
| PGM | Platinum-group Metals |
| EOS | Earth Observing System |
| XRMF | X-ray Microfluorescence |
| LHD | Lower Hybrid Drift |
| CTA | Classical Trajectory Approximation (in Mol.-collision Calcns.) |