| Acronym | Meaning |
| SXNO | Singly Excited Natural Orbital |
| FEEM | Field Electron Emission Microscopy |
| SAD | Selected Area Diffraction Patterns (crystal Chemistry) |
| THC | Total Hydrocarbon |
| PHF | Periodic Hartree-Fock |
| BSC | Bundle Sheath Cellpar |
| CARER | Center For The Advancement Of Radiation Education And Research |
| UCI | Ultrasonic Contact Impedance |
| ODFS | Optimized Dirac-Fock-Slater |
| COP | Crystal Originated Particle |