| Acronym | Meaning |
| NHE | Na+-H+ Exchanger |
| NPSO | Nonpaired Spatial Orbital |
| SSH | Su-Schieffer-Heeger (model Hamiltonian For Electronic-structure Calcns.) |
| PAN | Peroxyacetyl Nitrate |
| OSRHF | Open-shell Restricted-Hartree-Fock |
| MIS | Metal-insulator-semiconductor (solar Cells) |
| PBA | Poly(butyl Acrylate) |
| EOX | Extractable Organic Halides |
| DRS | Dielectric Relaxation Spectroscopy |
| PELMO | Pesticide Leaching Model |