| Acronym | Meaning |
| SCM | Self-consistent Multipolar (method In Metal Cluster Calcns.) |
| CHFEP | Coreless Hartree-Fock Effective Potential |
| HEED | High Energy Electron Diffraction |
| ECIST | Estimated Chronic In Stream Toxicity |
| STA | Simultaneous Thermal Analysis |
| ACES | Annual Cycle Energy Storage System |
| RXR | Retinoid X Receptor |
| RPM | Regional Project Managers |
| TIME | Test, Inspect, Measure, And Evaluate |
| PIRG | Public Interest Research Group |