| Acronym | Meaning |
| MPNO | Molecular Pair Natural Orbital |
| PIAS | Photon-counting Image Acquisition System |
| ANSOM | Apertureless Near-field Scanning Optical Microscopy |
| RFG | Reformulated Gasoline |
| VDHF | Variational Dirac-Hartree-Fock |
| GR | Glucocorticoid Receptorpar |
| REMCO | ISO Council Committee On Reference Materials |
| PCM | Phase-change Medium |
| DQW | Double Quantum Well |
| LEPD | Low Energy Photon Detector |