| Acronym | Meaning |
| SUPERDARN | Super Dual Auroral Radar Network |
| PARISS | Prism And Reflector Imaging Spectroscopy System |
| ATP | Adenosine Triphosphate (reg: 56-65-5) |
| CSDA | Continuous Slowing Down Approximation |
| OECD | Organization For Economic Cooperation And Development |
| CFS | Chronic Fatigue Syndrome |
| EXOSAT | European X-ray Observatory Satellite |
| HWIF | Hazardous Waste Incineration Facility Design And Modeling Computer Program |
| LCVD | Laser-induced Chemical Vapor Deposition |
| MEG | Modified Electron Gas (quantum Calcn. Method) |