| Acronym | Meaning |
| CD-SCSAG | Centrifugal Dominant-small Curvature Semiclassical Adiabatic Ground State (tunneling Approxn.) |
| ACT | Activated Clotting Time |
| EHT | Extended Hueckel Theory |
| APE | Aerosol Photoemission |
| THEED | Transmission High-energy Electron Diffraction |
| CC-CI | Cluster Corrected-configuration Interaction |
| HHOB | High-energy Higher-order Born (approxn. For Scattering Calcns.) |
| CCMP | Capacitively Coupled Microwave Plasma |
| PLAD | Pulsed Laser Ablation Deposition |
| DR-RWA | Dominant Resonance-rotating Wave Approximation |