| Acronym | Meaning |
| COSY | Correlation Spectroscopy |
| AAMI | Association For The Advancement Of Medical Instrumentation |
| FEGE | Free Electron Gas Exchange Approximation |
| EDWA | Exponential Distorted-wave Approxn. (atom-ion Electron-exchange Calcns.) |
| FGRM | Fourier-grid R-matrix Formalism (in Scattering Problems) |
| MPT | Matrix Perturbation Theory |
| SDSR-CI | Single And Double Excitations From Single Ref. State Function-CI Method |
| CISDT | CI With Single And Double And Triple Excitations |
| PAF | Platelet Activating Factor |
| SCI | Single Excitation Configuration Interaction |