| Acronym | Meaning |
| IPAA | Instrumental Photon Activation Analysis |
| REMPI | Resonance-Enhanced Multiphoton Ionization (for Mass Spectrometry) |
| LEDO | Limited Expansion Of Diatomic Overlap |
| NTRS | National Technology Roadmap For Semiconductors |
| NOV | Notice Of Violation |
| PSP | Pressure-sensitive Paint |
| NSSS | National Sewage Sludge Survey |
| SWAP | Surface Water Acidification Project |
| SCD | Supercritical Drying |
| PCD | Photoconductive Decay |