| Acronym | Meaning |
| PPAD | Parallel-plate Avalanche Detector |
| SIC-GX-LSD | Self-interaction Corrected Generalized Exchange Local Spin Density |
| VMS | Vehicle Management System |
| AFC | Automatic Frequency Control |
| PIRI | Photoinduced Rydberg Ionization |
| ACJ | Artificially Constructed Junction (in Solar Cell Fabrication) |
| HMSA | Hybrid Mean Spherical Approximation |
| NYSAS | New York Summer Aerosol Study |
| TEAM | Testing Electromagnetic Analysis Methods |
| DWTM | Distorted Wave T-matrix (for Electron-atom Scattering) |