| Acronym | Meaning |
| STHF | Single-term Hartree-Fock |
| QRA | Quantitative Risk Assessment |
| OSTI | Office Of Scientific And Technical Information |
| CSRR | Coupled-state Rigid-rotor |
| DFW | Diffusion Welding |
| VRM | Viscous Remanent Magnetization |
| RRM | Rayleigh-Ritz Method (for Quantum Calculations) |
| CDP | Contracted Density Product (in Simplification Of MO Calcns.) |
| TCA | Trichloroacetic Acid |
| MRSD-CI+D | MRSD-CI (with) Davidson Correction |