| Acronym | Meaning |
| PCDW | Projectile Continuum Distorted Wave (in Atom Collision Calcns.) |
| SDWA | Safe Drinking Water Act |
| LPED | Low-pressure Electric Discharge |
| MEG4 | Multiexponentially Generated 4 (wave Functions) |
| AA | Atomic Absorption |
| NAWQA | National Water Quality Assessment (US Geological Survey) |
| ARXAS | Angle-resolved X-ray Absorption |
| VPSSQM | Variable-phase Supersymmetric Quantum Mechanics |
| NMA | Nuclear Microanalysis |
| CFSRM | Coherent Forward Scattering Resonance Monochromator |