| Acronym | Meaning |
| APLI | Atmospheric Pressure Laser Ionization |
| EMZDO | Exchange Modified Zero Differential Overlap |
| ARF | Absolute Response Factor |
| CAER | Community Awareness And Emergency Response |
| AOIPS | Atmospheric And Oceanographic Information Processing System |
| ITG | Ion Temperature Gradient |
| LBO | Localized Born-Oppenheimer |
| PLI | Process Loading Intensity (of Biological Reactors) |
| APD | Avalanche Photodiode |
| HEDS | Human Exploration And Development Of Space |