| Acronym | Meaning |
| GSA | Generalized Sudden Approximation |
| NMDR | Nuclear Magnetic Double Resonance |
| ISES | International Solar Energy Society |
| HD | Sulfur Mustard |
| DAS | Dynamic Angle Spinning |
| CIV | Critical Ionization Velocity (ionosphere) |
| RR | Round Robin (test) |
| GLORIA | Gold-labeled, Optically Read, Rapid Immunoassay |
| AASD | Anaerobic Activated Sludge Digestion |
| FBA | First Born Approximation |