| Acronym | Meaning |
| CEPA | Coupled Electron Pair Approximation |
| DMCP | Double Microchannel Plate |
| BIXE | Bombardment-induced X-ray Emission |
| STBF | Slater-type Basis Function |
| LSS | Life-Span Study |
| TDGI | Time-dependent Gage-invariant (quantum Calcn. Method) |
| SCLC | Space Charge Limited Current |
| GEOSECS | Geochemical Ocean Sections |
| QPO | Quasi-periodic Oscillation |
| PDB | Protein Data Bank |