| Acronym | Meaning |
| ELSA | Emergency Level Scale Assessment |
| CWTM | Compound Weaire-Thorpe Model (in Electronic-structure Calcns.) |
| ISO | International Organization For Standardization |
| REP | Rotating Electrode Process |
| HAZOP | Hazard And Operability Study |
| TOTE | Tropical Ozone Transport Experiment |
| LAH | Lithium Aluminum Hydride |
| ALCA | American Leather Chemists' Association |
| SCC | Stress-corrosion Cracking |
| PHC | Photonic Crystal |