| Acronym | Meaning |
| PAK | P21-Activated Kinase |
| ALWR | Advanced Light Water Reactor |
| PA/SI | Preliminary Assessment/Site Inspection |
| PHA | Process Hazard Analysis |
| HCA | Hierarchical Cluster Analysis |
| TST | Transition State Theory |
| VOIP | Valence Orbital Ionization Potential |
| CPMP | Committee For Proprietary Medical Products |
| SCS | Semiclassical Coupled-states |
| HAFID | Hydrogen Atmosphere Flame Ionization Detector |