| Acronym | Meaning |
| ETS | Electron Transport System |
| GFIS | Gas Field Ion Source |
| THGF | Trigonometric Hermite Gaussian Function |
| MSK | Muscular-skeletal Effects |
| BAO | Best Atomic Orbital Basis |
| VSEP | Vibratory Shear Enhanced Process |
| SCTB | Self-consistent Tight-binding (in Electronic Structure) |
| MPMMG | Marine Pollution Monitoring Management Group (UK) |
| TPSA | Topological Surface Area |
| AVS | Acid Volatile Sulfide |