| Acronym | Meaning |
| SPLEEM | Spin-polarized Low-energy Electron Microscopy |
| BMSC | Bone Marrow Stromal Cell |
| ANSI | American National Standards Institute |
| PA | Photoinduced Absorption |
| RAM | Random Access Memory |
| STATE | Sulfur Transport And Transformation In The Environment |
| RHF | Restricted Hartree-Fock |
| BOPF | Basic Oxygen Process Furnace |
| SAIC | Science Applications International Corporation |
| CISS | Constant-initial-state Spectroscopy |