| Acronym | Meaning |
| EDXA | Energy-dispersive X-ray Analysis |
| DZD | (double Zeta)-diffuse (basis Set In Configuration-mixing MO Calcns. On Mols.) |
| AMD | Automated Multiple Development |
| RSM | Reduction Symmetry Method (in Crystal Field Theory) |
| SCE | Semiclassical Exchange Approximation |
| SASE | Self-amplified Spontaneous Emission |
| RLM | Rotating Linear Model (for Effective Potential Surfaces In Coupled-channel Calcns. On Reactive Scattering) |
| MQDT | Multichannel Quantum Defect Theory |
| NLAP | Nonlimited Aeration Process (for Waste Treatment) |
| BPH | Benign Prostatic Hyperplasia |