| Acronym | Meaning |
| CPQRA | Chemical Process Quantitative Risk Assessment |
| PFEO | Perimeter Free Electron Orbital |
| ACCR | Activated Carbon Catalytic Reduction |
| EDC | Electron Energy Distribution Curve |
| FCSA | Frequency-corrected Sudden Approxn. (in Mol. Collision Calcns.) |
| SSC | Sulfide Stress Cracking |
| IUPHAR | International Union Of Pharmacology |
| AEGL | Acute Exposure Guideline Level |
| FID | Free Induction Decay (Fourier Transform Spectroscopy) |
| LAMBD | Laser Assisted Molecular Beam Deposition |