| Acronym | Meaning |
| CEPA-SD | Coupled-electron-pair Approxn. (with) Single (and) Double Excitations |
| MCAD | Medium Chain Acyl-CoA Dehydrogenase |
| QSO | Quasistellar Objects |
| OLSR | Ordinary Least Squares Regression |
| MR-MP2 | Multireference Moeller-Plesset For Two-configuration Wave Function |
| PAPP-A | Pregnancy-associated Plasma Protein A |
| RAS | Reflectance Anisotropy Spectroscopy |
| ELED | Edge-emitting Light Emitting Diode |
| GMISS | Gridded Model Information Support System |
| PDG | Patent Documentation Group |