| Acronym | Meaning |
| AIEMP | Ab Initio Embedding Model Potential |
| ALS | Alternating Least Squares |
| VCI | Valence Configuration Interaction (wave Function) |
| SPARHEED | Spot Profile Analysis Reflection High-energy Electron Diffraction |
| MBBR | Moving Bed Biofilm Reactor |
| CFHT | Canada-France-Hawaii Telescope |
| COPE | Cytokines Online Pathfinder Encyclopaedia |
| OWG | Optical Waveguide |
| TRAF | Tumor Necrosis Factor Receptor-associated Factor |
| FOE | First-order Exchange (in Electron-atom Scattering Calcn.) |