| Acronym | Meaning |
| CFM | Continued-fraction Method |
| TDSE | Time-dependent Schroedinger Equation |
| DQ-RSPT | Double And Quadruple Excitation Diagrams In Rayleigh-Schroedinger Perturbation Theory |
| FTEMIRS | Fourier Transform Electrochem. Modulated IR Spectroscopy |
| SEHRRS | Surface Enhanced HyperRaman Resonance Spectroscopy |
| HRA | Health Risk Assessment |
| PNGV | Partnership For A New Generation Of Vehicles |
| PIMA | Polyisocyanurate Insulation Manufacturers Association |
| R2PI | Resonant Two-photon Ionization |
| EQO | Environmental Quality Objective |