| Acronym | Meaning |
| ZAAS | Zeeman Atomic Absorption Spectroscopy |
| LET | Linear Energy Transfer (in Spacecraft Power Systems) |
| HAD | Hollow Anode Discharge |
| SPL | Spent Potliner |
| TFE | Thermionic Fuel Element |
| UASBR | Upflow Anaerobic Sludge Blanket Reactor |
| NERC | Natural Environment Research Council (UK) |
| SAMBA | Satellite For Measurement Of Background Anisotropies |
| AMANDA | Antarctic Muon And Neutrino Detector Array |
| TCGF | T Cell Growth Factor |