| Acronym | Meaning |
| ARPA | Augmented Random Phase Approximation |
| MINDO/SR | MINDO S=overlap Integral R=internuclear Distance |
| MDF | Medium-density Fiberboard |
| GMO | Genetically Modified Organism |
| BF | Bright Field |
| TTS | T Tauri Star |
| RIR | Relative Inhalation Risk |
| KTPP | Potassium Tripolyphosphate |
| BFEM | Bright Field Electron Microscopy |
| EMT | Effective Mass Theory (in Electronic Wave Functions Calcn.) |