| Acronym | Meaning |
| HEI | Highly Exposed Individual |
| LOEC | Lowest Observed Effect Concentration |
| EBRT | Empty-bed Residence Time |
| SLAR | Side Looking Airborne Radar |
| ANT | Adenine Nucleotide Translocator |
| MLVSS | Mixed Liquor Volatile Suspended Solids |
| EVA | Extravehicular Activity (related To Spacecraft) |
| HRADS | High Resolution Adsorption |
| RITG | Radiatively Important Trace Gases |
| FAMA | Fluorescent Antibody Membrane Antigen |