| Acronym | Meaning |
| TSDIA | Two-scale Direct-interaction Approximation [in Flow Energy Modeling] |
| TDCP-HFR | Time-dependent Coupled Perturbed Hartree-Fock-roothan Approach |
| PTC | Positive Temperature Coefficient [elec. Conducting Material] |
| MTEL | Maximum Tolerable Exposure Levels |
| IUPAP | International Union Of Pure And Applied Physics |
| ART | Asphalt Residual Treatment |
| HYPS | Hybrid Plasma Spraying |
| APEG | Alkaline Polyethylene Glycolate |
| SGGA | Symmetric Group Graphical Approach (in CI Calcns.) |
| PASH | Polycyclic Aromatic Sulfur-containing Hydrocarbons |