| Acronym | Meaning |
| SIMBA | Selective Inverse Multiple Bond Analysis |
| BEST | Bare Essentials Of Surface Transfer |
| AUDM | Advanced Unified Defect Model |
| BBK | Brauner-Briggs-Klar (wave Function In Atom-electron Scattering) |
| WSATI-WQ | Weighted Species Association Tolerance Index-water Quality |
| FV-CAS-SCF | Full Valence-complete Active Space-SCF |
| GOE | Gaussian Orthogonal Ensemble (of Random Matrixes In Quantum Chaoticity Study In At. And Nuclear Energy Levels) |
| ICPIC | International Cleaner Production Information Clearinghouse |
| PAFC | Phosphoric Acid Fuel Cells |
| LET | Light-emitting Transistor |