| Acronym | Meaning |
| COLOC | Correlation Spectroscopy For Long-range Couplings |
| STCA | Simplified Traveling-cluster Approxn. (for Electronic Structure) |
| QALE | Quantitative Analysis Of Ligand Effects |
| IOS-BS | Infinite Order Sudden-breathing Sphere |
| TPLSM | Two-photon Laser-scanning Microscopy |
| CBO | Coulomb Born Oppenheimer |
| FID | Flame Ionization Detector (gas Chromatography) |
| NDLM | Nondiagonal Lagrange Multiplier |
| CCSC | Charge And Configuration Self-consistency |
| GTCP | Global Tropospheric Chemistry Program |