| Acronym | Meaning |
| PXRF | Polarized X-ray Fluorescence |
| ORGDL | Oak Ridge Gaseous Diffusion Lab. |
| TGTF | Trigonometric Gaussian-type Function |
| GDAAS | Glow Discharge Atomic Absorption Spectrometry |
| EFG | Edge-defined Film Growth (of Semiconductors |
| BEBO | Bond Energy Bond Order Method |
| G2 | Gaussian-two (an Ab Initio Mo Theory For Mol. Energies Calcn.) |
| ECCF | Equilibrium Charge-charge Flux (model In Ir Spectra Calcns.) |
| EXSY | Exchange Spectroscopy |
| NITM | Normalized Irreducible Tensorial Matrix |