| Acronym | Meaning |
| TIROS | Television And IR Observation Satellite |
| CCA | Close-coupling Approximation |
| CFB | Circulating Fluidized Bed |
| HGMF | High Gradient Magnetic Filtration |
| ETB | Extended Tight-binding (method For Electronic-structure Calcns.) |
| EHLS | Environmental Health Laboratory Sciences |
| PYMS | Pyrolysis Mass Spectrometry |
| APH | Adiabatically Adjusting |
| FESEM | Field Emission Scanning Electron Microscopy |
| ARIM | Accelerator And Reactor Improvement And Modification |