| Acronym | Meaning |
| AIEE | American Institute For Electrical Engineers |
| ERP | Effective Refractory Period |
| CDHR | Center For Devices And Radiological Health |
| ARCS | Assessment And Remediation Of Contaminated Sediments |
| SAPS | Spherical Average Pseudopotential |
| SET | Single Electron Transistor |
| QPO | Quasi-periodic Oscillation |
| CRU | Constitutional Repeating Unit |
| BART | Best Available Retrofit Technology |
| FLMTO | Film Linearized Muffin-tin Orbital (for Surface Electronic Structure Calcns.) |