| Acronym | Meaning |
| IGC | International Geological Congress |
| GRINDOL | Ghost (and) Rydberg INDO |
| IEET | Intramolecular Electronic Energy Transfer |
| WSAP | Weighted Sensitivity Analysis Program |
| SOFIA | Stratospheric Observatory For Infrared Astronomy |
| XGRS | X-ray/gamma-ray Spectrometer |
| RBA | Refined Born Approximation (for Atom-mol. Collisions) |
| IPWO | Interface Plane Wave Orbitals |
| CMX(2) | Second-order Connected Moments Expansion (method For Calcg. Correlation Energies Of Mols.) |
| ICR | Intensified Controlled Rolling |