| Acronym | Meaning |
| SAMOS | System For Automated Monitoring Of Org. Pollutants In Surface Water |
| CELS | Characteristic Energy Loss Spectroscopy |
| CHIP | Chemical Hazard Information Profile(s) |
| RVDT | Rotary Variable Differential Transformer |
| PIA | Peaking Impulse Approxn. (for Electron-exchange Collisions) |
| API | American Petroleum Institute |
| PEMS | Predictive Emission Monitoring System |
| FK | Fish Kill (file Within STORET) |
| SCSAG | Small-curvature Semiclassical Adiabatic Ground-state (tunneling Approxn.) |
| BCGF | B Cell Growth Factor |