| Acronym | Meaning |
| ICPAC | International Committee On Polycyclic Aromatic Compounds |
| HF MO LCAO | Hartree-Fock MO LCAO |
| ODC | Orientation Distribution Coeffs. |
| BLC | B Lymphocyte Chemoattractant |
| RARE | Rapid Acquisition Relaxation-enhanced |
| SVI | Sludge Volume Index |
| ISC-PEM-MO | Iterative Self-consistent Partition Of Energy Method And MO Formalism |
| MPE | Mean Percent Error |
| LRT | Long Range Transport |
| GDT | Generalized Dilatation Transformation (method In Study Of Stationarity Principle For At. And Mol. Resonance States) |