| Acronym | Meaning |
| GS | Gelius-Siegbahn (MO Approxn.) |
| RSMC | Regional Specialized Meteorological Centre |
| ADP | Auger Depth Profiling |
| DAPS | Disappearance Potential Spectroscopy |
| ZEKE | Zero Electron Kinetic Energy |
| RB | Renormalized Band (method In Electronic-structure Calcns.) |
| STAPPA | State And Territorial Air Pollution Program Administrators |
| ODLTS | Optical Deep Level Transient Spectroscopy |
| CIP | Cold Isostatic Pressing |
| QRPA | Quadratic Random Phase Approxn. |