| Acronym | Meaning |
| HIC | Hydrophobic Interaction Chromatography |
| OVOS | Optimized Virtual Orbital Space Approximation (for Correlated Calcns.) |
| SDW | Spin Density Wave |
| PRMO | Partially Restricted Molecular Orbital |
| FTS | Fourier Transform Spectroscopy |
| IAG | Island-arc Granitoids |
| RTG | Radioisotope Thermoelec. Generators |
| RSS | Recombination Signal Sequence |
| GM | Geometric Mean |
| CITS | Current-imaging Tunneling Spectroscopy |