| Acronym | Meaning |
| LWIR | Long Wavelength IR |
| HRXPS | High Resolution X-ray Photoelectron Spectroscopy |
| SLAPW | Surface Linearized Augmented Plane Wave |
| TVA | Tennessee Valley Authority |
| ABI | Automated Ball Indentation |
| APC | Activated Protein C |
| PIMIA | Potentiometric Ionophore-modulation Immunoassay |
| RMS | Root Mean Square |
| APGF | Antisymmetrical Product Of Group Functions (a Wave Function) |
| COP | Coefficient Of Performance |