| Acronym | Meaning |
| IRZ | Immediate Response Zone |
| GPO | Government Printing Office |
| PCI | Percutaneous Coronary Intervention |
| PPMSVX | Pseudopotential Multiple-scattering Valence-exchange |
| DSW | Dirac Scattered-wave (often As SCF-X(alpha)-DSW Method) |
| RMF | Rotating Morse Function (in Potential-surface Calcn.) |
| AOC | Administrative Order Of Consent |
| HWS | Hazardous Waste Site |
| HTS | Hadamard Transfer Spectrometry |
| FSCV | Fast-scan Cyclic Voltammetry |