| Acronym | Meaning |
 | CFS | Coherent Forward Scattering |
 | TTS | T Tauri Star |
 | AIRS | Atmospheric Infrared Sounder |
 | MFC | Multiconfigurational Frozen Core (approxn. For Electron-atom Scattering Calcns.) |
 | ESDN | Electron Stimulated Desorption Of Neutrals |
 | RWA | Rotating Wave Approximation |
 | NBOD | Nitrogenous Biochemical Oxygen Demand |
 | OGDR | Optogalvanic Double Resonance |
 | CSA | Canadian Standards Authority |
 | SECH | Screened Exchange Plus Coulomb Hole Method |