| Acronym | Meaning |
| LNO | Localized Natural Orbital |
| RPSA | Rapid Pressure Swing Adsorption |
| SECS | Simulation And Evaluation Of Chemical Synthesis |
| SNS | Sympathetic Nervous System |
| NLET | National Laboratory For Environmental Testing |
| AQDM | Air Quality Display Model |
| PSL | Polystyrene Latex |
| CALCOFI | California Cooperative Oceanic Fisheries Investigations |
| BHP | Bottom-hole Pressure |
| SCR | Selective Catalytic Reduction |