| Acronym | Meaning |
| TSS | Total Suspended Solids |
| ROG | Reactive Organic Gas |
| ROESY | Rotating-frame Overhauser Enhancement Spectroscopy |
| ROHS | Restrictions On Hazardous Substances |
| BRCA2 | Breast Cancer Gene 2 |
| EI | Electron Impact |
| COMAH | Control Of Major Accident Hazards |
| HCDW | Hydrogenic Continuum Distorted Wave (a Wave Function In Calcns. On Atomic And Molecular Collisions) |
| DCBX | Distorted Coulomb-Born Exchange Approxn. |
| LOIS | Loss Of Interim Status |