| Acronym | Meaning |
| ESSP | Eddy Statistics Scientific Panel |
| PTRI | Programmed Temperature Retention Index |
| TCLE | Thermal Coefficient Of Linear Expansion |
| SES | Surface Electronic State |
| ARPES | Angle-resolved Photoelectron Spectroscopy |
| LEPD | Low Energy Photon Detector |
| TIPS | Transferable Intermol. Potential Functions |
| MCLR | Multiconfigurational Linear Response (an MC-SCF Method) |
| NIWG | National Interagency Work Group |
| WEEL | Workplace Environmental Exposure Limits |