| Acronym | Meaning |
| RB | Renormalized Band (method In Electronic-structure Calcns.) |
| GHSV | Gas Hourly Space Velocity |
| UPS | Uninterrupted Power Systems (for Computer Networks) |
| USDA | United States Department Of Agriculture |
| RFIE | Reverse Flow Ion Exchange |
| APECS | Auger Photoelectron Coincidence Spectroscopy |
| STF | Slater-type Function |
| ANSTO | Australian Nuclear Science And Technology Organization |
| CFS | Coherent Forward Scattering |
| HETP | Height Equivalent To A Theoretical Plate |