| Acronym | Meaning |
| ENAMAP | Eastern North American Model Of Air Pollution |
| VEELS | Valence Electron Energy-loss Spectroscopy |
| SIMD | Single-instruction Multiple-data |
| SEHF | Spin-extended Hartree-Fock |
| HACS | Hazard Assessment Computer System |
| HPW | High Pressure Welding |
| SLP | Static Linear Polarization |
| CSF | Configuration Spin Function (a Wave Function) |
| LSS | Lindhard-Scharff-Schiott Theory |
| TSH | (classical) Trajectory Surface Hopping (for Ion-mol. Collisions) |