| Acronym | Meaning |
| IGES | Institute Of Global Environment And Society |
| ESEM | Electron Spin Echo Modulation |
| CARL | Collective Atomic Recoil Laser |
| ARRP | Acid Rain Research Program |
| PEMC | Pair-excitation Multiconfiguration (type Of Wave Function) |
| OSTLS | Optical Saturation Thermal Lens Spectrometry |
| PDA | Photodiode Array |
| IMAGE | International Monitor For Auroral Geomagnetic Effects |
| IT | Integral Transform |
| ERM | Electron Redistribution Model |