| Acronym | Meaning |
| PVB | Projected Valence Bond |
| LMCT | Ligand-to-metal Charge Transfer |
| EETFC | Environmental Effects |
| POCH | Polarized Ochkur |
| BCNTF | Biofilm-Controlled Nitrifying Trickling Filter (for Wastewater Treatment) |
| CFHH-GLF | CFHH-generalized Laguerre Function |
| RMP | Relativistic Model Potential |
| WPT | Wave Packet Perturbation Theory |
| FUSRAP | Formerly Utilized Sites Remedial Action Program (radioactive Materials Related) |
| PVO | Pseudovalence Orbital |