| Acronym | Meaning |
| GTDA | Generalized Tamm-Dancoff Approximation |
| LLNL | Lawrence Livermore National Laboratory |
| PIO | Paired Interaction Orbital |
| PTRI | Programmed Temperature Retention Index |
| MIDAS | Manchester Information Datasets And Associated Services |
| TEO | Topological Equivalent Orbital |
| HETE | High Energy Transient Explorer |
| MNOS | Metal-nitride Oxide Semiconductor |
| EAROM | Electrically Alterable Read Only Memory |
| NPTII | Neomycin-phosphotransferase II |