| Acronym | Meaning |
| ECCM | Extended Coupled-cluster Method |
| OCLC | Online Computer Library Center |
| TLFPE | Time-local Fokker-Planck Equation |
| MMSE | Minimum Mean Square Error |
| FRDS | Federal Reporting Data System |
| FFAR | Fuel And Fuel Additive Registration |
| NERC | Natural Environment Research Council (UK) |
| APSGF | Antisymmetrical Product Of Strongly Orthogonal Group Functions (a Wave Function) |
| ESD | Electrostatic Discharge |
| SHAPE | Simulation Of Human Activity And Pollution Exposure |