| Acronym | Meaning |
| PIDIE | Plutonium Isotopic Detn. Intercomparison Exercise |
| RI | Replication Index |
| LOCI | Luminescence Oxygen Channeling Immunoassay |
| EDC | Electron Energy Distribution Curve |
| FRSS | Federal Register Search System |
| BART | Best Available Retrofit Technology |
| CIDEP | Chemically Induced Dynamic Electron Polarization |
| REP | Radiological Emergency Planning |
| ANOI | Advance Notice Of Intent |
| FAMA | Fluorescent Antibody Membrane Antigen |