| Acronym | Meaning |
| EISCAT | European Incoherent Scatter Radar (atm. Sensing) |
| IDT | Interdigital Transducer |
| EPACSAR | EPA Chemical Activities Status Report |
| SES | Surface Electronic State |
| EMTB | Effective-medium Tight-binding |
| BEC | Bose-Einstein Condensation |
| PLDMR | Photoluminescence Detected Magnetic Resonance |
| PCU | Process Control Unit |
| ASTHO | Association Of State And Territorial Health Officers |
| GNLSE | Generalized Nonlinear Schroedinger Equation |