| Acronym | Meaning |
| MCPF | Modified Coupled-pair Functional (method In CI Calcns.) |
| ICT | Intramol. Charge Transfer |
| PMTR | Photomodulated Thermoreflectance |
| TARIS | Thermal Atomization Resonance Ionization Spectrometry |
| NEROS | Northeast Regional Oxidant Study |
| TC | Toxicity Characteristic |
| LIRE | Laser Ionization Recombination Emission |
| PNO | Pair Natural Orbital |
| LTH | Linearized Time-dependent Hartree (approxn. |
| AOAC | Association Of Official Analytical Chemists |