| Acronym | Meaning |
| MESA | Mass Concentration Extinction Size Analyzer |
| THCP | Total Hazard Control Plan |
| CMCPE | Chemically Modified Carbon-paste Electrode |
| OVGF | Outer-valence Green Function (for Ionization-energy Calcns.) |
| APO B | Apolipoprotein B |
| ERIIS | Environmental Risk Information And Imaging Services |
| MPR | Magnetic Permeability Resonance |
| EE | Ecosystem Evaluation |
| HPI | Hazard Potential Index |
| SCOT | Shell Claus Off-gas Treating |