| Acronym | Meaning |
| ELSA | Electron Stretcher Accelerator |
| KKR | Korringa-Kohn-Rostoker (in Band Structure Calcn.) |
| SUMO | Small Ubiquitin-related Modifier |
| AIRDAS | Airborne Infrared Disaster Assessment System |
| LEFM | Linear Elastic Fracture Mechanics |
| TSA | Temperature Swing Adsorption |
| BDAT | Best Demonstrated Available Technology |
| CSDW | Centrifugal Sudden (or Coupled States) Distorted Wave (methodfor Reactive Mol. Collisions) |
| EEXAPS | Electron Excited X-ray Appearance Potential Spectroscopy |
| IWOP | Integration Within (an Ordered Product Of) Operators |