| Acronym | Meaning |
| APE | Aerosol Photoemission |
| HARA | Hazard Assessment By Risk Analysis |
| RAPRA | Rubber And Plastics Research Association |
| STBF | Slater-type Basis Function |
| ACIS | Advanced CCD Imaging Spectrometer |
| SAGE | Soviet-American Gallium Experiment |
| RFA | RCRA Facility Assessment |
| PRDDO | Partial Retention Of Diatomic Differential Overlap |
| GX | Generalized Exchange |
| CATS | Corrective Action Tracking System |