| Acronym | Meaning |
| TDLDA | Time-dependent Local-density Approximation |
| CCWP-J | Close Coupling Wave Packet [in Total Angular Momentum] J [representation] (for Collision Calcns.) |
| EWALD | Evanescent Wave Analysis With Laser Diodes |
| GMAD | Geometric Mean Aerodynamic Diameter |
| CSIR | Council For Scientific And Industrial Research (South Africa) |
| FRS | Forward Recoil Spectrometry |
| ASNT | American Society For Nondestructive Testing |
| TSSMS | Time Sharing Service Management System |
| THDM | Translucent Humic Degradation Matter |
| HRT | Hormone Replacement Therapy |