| Acronym | Meaning |
| FCS | Fluorescence Correlation Spectroscopy |
| PLE | Photoluminescence Excitation |
| UAQI | Uniform Air Quality Index |
| RR | Round Robin (test) |
| CFFE | Cumulative Fissile Fuel Enrichment |
| TTLC | Total Threshold Limit Concentration |
| WHH | Width At Half Height [in X-ray Diffraction] |
| BIA | Biochemical Induction Assay |
| IAB | Information Access Branch |
| QAEM | Quality Assurance For Environmental Measurements |