| Acronym | Meaning |
| FOS | First-order Sudden |
| NIXSW | Normal Incidence X-ray Standing Wave |
| DFW | Diffusion Welding |
| DHS | Department Of Homeland Securitypar |
| SLF | Slater-Laguerre (hydrogenic-type Wave) Function |
| SCRP | Specific Chelation |
| 2PH TDA | Two-particle-hole Tamm-Dancoff Approximation (for Closed-shell |
| CURE | Clean Use Of Reactor Energy |
| SOC | Superposition Of Configurations (wave Functions) |
| SIMD | Single-instruction Multiple-data |