| Acronym | Meaning |
| GIXR | Grazing Incidence X-ray Reflectivity |
| ECIST | Estimated Chronic In Stream Toxicity |
| ERPF | Effective Renal Plasma Flow |
| FPC | Federal Power Commission |
| QLCPMET | Quasilinearized Coupled-pair-many-electron Theory |
| TRESR | Time-resolved Electron Spin Resonance |
| PREP | Plasma Rotating Electrode Process |
| MIBERS | Multi-ion-beam Reactive Sputtering |
| GEO | Geostationary Earth Orbit |
| RFCC | Residue Fluid Catalytic Cracking |