| Acronym | Meaning |
| EVB | Effective Valence Bond (hamiltonian) |
| OTE | Oxygen Transfer Efficiency (of Aeration Diffusers) |
| HGCU | Hot Gas Cleanup |
| MAT | Microactivity Tests |
| SASS | Source Assessment Sampling System |
| CS | Crystal Structure |
| LPFF | Laser Photolysis Fragment Fluorescence |
| PIMBE | Plasma-induced Molecular-beam Epitaxy |
| HSX | Helically Symmetric Experiment |
| HIT | Hazard Information Transmission |