| Acronym | Meaning |
| OD | Optical Density |
| WDD | Weighted Density Distribution |
| NKA | (Na2O + K2O)/Al2O3 |
| EUVL | Extreme Ultraviolet Lithography |
| ETS | Environmental Tobacco Smoke |
| SCD | Supercritical Drying |
| SME | Solar Mesosphere Explorer |
| MR-CEPM | Multireference-coupled Electron Pair Method |
| ASB | Aerobic Stabilization Basin |
| HSSPME | Headspace Solid-phase Microextraction |