| Acronym | Meaning |
| GBS | Generalized Bohr-Sommerfeld (quantization Method) |
| PHF | Projected Hartree Fock |
| NDTT | Nil Ductility Transition Temperature |
| XPM | X-ray Photoelectron Microscopy |
| ECDIN | Environmental Chemicals Data And Information Network |
| CPA | Coupled-pair Approximation |
| HEPA | High-efficiency Particulate Air Filter |
| X-SAR | X-Band Synthetic Aperture Radar |
| MOGA | Michigan Oil And Gas Association |
| CPMC-SCF | Coupled Perturbed Multiconfigurational SCF |