| Acronym | Meaning |
| NES | US National Eutrophication Study |
| APS | Aerodynamic Particle Sizer |
| OLR | Organic Loading Rate |
| NDCT | Natural Draft Cooling Tower |
| SOBO | Spin-orbit (coupled) Bond Orbital |
| RNO | Reaction Natural Orbital |
| CDIF | Component Development And Integration Facility (MHD Channel Generator Plant |
| IGFA | Inert Gas Fusion Analysis |
| PZC | Point Of Zero Charge (of Water) |
| DSPIL | Direct Solar Pumped Iodine Laser |