| Acronym | Meaning |
| G2 | Gaussian-two (an Ab Initio Mo Theory For Mol. Energies Calcn.) |
| PFPD | Pulsed-flame Photometer Detector |
| GDT | Generalized Dilatation Transformation (method In Study Of Stationarity Principle For At. And Mol. Resonance States) |
| SMSX(ALPHA) | Overlapping-sphere Multiple-scattering X(alpha) |
| SLMO | Symmetry-adapted Semilocalized Molecular Orbital |
| FRES | Forward Recoil Emission Spectrometry |
| MMC | Metal-Matrix Composite |
| TPO | Technical Project Officer |
| CINDO | Closed Shell Intermediate Neglect Of Overlap Method |
| NARL | National Air And Radiation Laboratory |