| Acronym | Meaning |
| HRT | Hydraulic Retention Time |
| SLE | Stochastic Liouville Equation (in Quantum Statistical Mechanics) |
| FPD | Flame Photometric Detector (gas Chromatography) |
| CCSD-UED | CCSD-unrelaxed Energy Derivative |
| ZOLZ | Zero Order Laue Zone |
| FEN | Free Electron Network |
| HAC | Hydrogen-assisted Cracking |
| FP-SCF-INDO | Finite Perturbation-SCF-INDO |
| OP-AMP | Operational Amplifier |
| NISO | National Information Standards Organization |