| Acronym | Meaning |
| ZORA | Zeroth-order Regular Approximation |
| LWBR | Light-water Breeder Reactor |
| PIRSS | Polarization IR Surface Spectroscopy |
| IDI | Ion Dipole Induced (potential Term In Potential Energy Surfaces) See Also LEPS-IDI |
| ITFM | Intergovernmental Task Force On Monitoring |
| PDI | Polarization-division Interferometry |
| YOS | Yttrium Orthosilicate |
| RFP | Reasonable Further Progress |
| FBR | Fixed Bed Reactor |
| PIONA | Paraffins |