| Acronym | Meaning |
| EPCE-F2(SIGM | Effective Pair Correlation Energy Method With The Factor-two (f2) Approximation For Sigma-electron Systems |
| LWIR | Long Wavelength IR |
| CRLAS | Cavity Ringdown Laser Absorption Spectroscopy |
| INO | Iterative Natural Orbital |
| FREEON | Spin-free Orbital |
| SDSD | Satellite Data Services Division |
| AMS | Aerospace Material Specification |
| IAEG | International Association Of Engineering Geology |
| LPFF | Laser Photolysis Fragment Fluorescence |
| SCM | Scanning Capacitance Microscopy |