| Acronym | Meaning |
| RME | Reduced Matrix Equations |
| CHF | Coupled Hartree-Fock |
| PANAK | Peroxyacetyl Nitrate Aldehyde Ketones |
| LECD | Lifetime Equivalent Constant Dose |
| RBM | Rigid Band Model |
| ATLAS | Atmospheric Laboratory For Applications And Science |
| PBP | Pheromone-binding Protein |
| PQCD | Perturbative Quantum Chromodynamics |
| CD | Centrifugal Decoupling Approximation (for Atom-mol.scattering) |
| CSA | Coupled States Approxn. |