| Acronym | Meaning |
| PPAC | Parallel-plate Avalanche Counter |
| HKS | Hohenberg-Kohn-Sham (quantum Theory) |
| LCGTO-LDF | Linear Combination Of Gaussian-type Orbitals-local Density Functional |
| FNA | Fine-needle Aspiration |
| VTA | Ventral Tegmental Area |
| BPT | Best Practical Technology |
| TEF | Toxicity Equivalency Factor |
| ABBOT | Atomic Billiard Ball Orbital Theory |
| MNOS | Metal-nitride Oxide Semiconductor |
| SCANIIR | Surface Composition Analysis By Neutral And Ion Impact Radiation |