| Acronym | Meaning |
| EGRET | Energetic Gamma Ray Experiment Telescope |
| RQCAR | Reportable Quantities For Carcinogens In Hazardous Waste |
| NAVORDSTA | Naval Ordnance Station (US) |
| GPM | Generalized Perturbation Method (in Electronic Theory Of Phase Stability Of Alloys) |
| LDF | Local Density Functional |
| NIR | Near Infrared |
| SSCPA | Single-site Coherent-potential Approximation |
| NAL | No Action Level |
| PTK | Protein Tyrosine Kinase |
| FI | Field Ionization |