| Acronym | Meaning |
| MBTS | 2-mercaptobenzothiazyl Disulfide |
| EGCI | Exponentially Generated Configuration Interaction |
| RIXS | Resonant Inelastic X-ray Scattering |
| ESI | Electrospray Ionization |
| PDVB | Poly(divinyl Benzene) |
| FIAT | Field Information Agency Technical |
| DIAL | Differential Absorption Lidar (laser Radar Sensing) |
| OVGF | Outer-valence Green Function (for Ionization-energy Calcns.) |
| IC-ACPF | Internally Contracted (multireference) Averaged Coupled Pair Functional |
| ATES | Aquifer Thermal Energy Storage |