| Acronym | Meaning |
| ETB | Extended Tight-binding (method For Electronic-structure Calcns.) |
| ACI | Alloy Casting Institute |
| NVPA | No-virtual-pair Approxn. |
| APECS | Auger Photoelectron Coincidence Spectroscopy |
| RVAAP | Resource Values Affected By Air Pollution |
| FIT | Flow Injection Titration |
| FRSS | Federal Register Search System |
| LMDPE | Linear Medium Density Polyethylene |
| PMTR | Photomodulated Thermoreflectance |
| SCI | Stabilized Criegee Intermediate(s) |