| Acronym | Meaning |
| PGE | Platinum Group Elements |
| ECPSSR | Energy-loss Coulomb-repulsion Perturbed-stationary-state Relativistic Theory |
| RECP | Relativistic Effective-core Potential |
| MC-CEPA | Multiconfigurational CEPA |
| POP | Persistent Organic Pollutant |
| CBD | Cellulose-binding Domain |
| ADPKD | Autosomal Dominant Polycystic Kidney Disease |
| CSACM | Canonical Statistical Adiabatic Channel Model (in Reactions) |
| ARRPA | Air Resources Regional Pollution Assessment Model |
| CART | Cloud And Radiation Testbed |