| Acronym | Meaning |
| VB | Valence Bond |
| HWDU | Hazardous Waste Disposal Unit |
| NLMO | Nonorthogonal Localized Molecular Orbital |
| FSIS | Food Safety And Inspection Service |
| AIMB | Analogy And Intelligence In Model Building |
| SEDM | Selective Excitation Double Moessbauer |
| DIRLD | Dynamic Infrared Linear Dichroism |
| ETF | Exponential-type Function (an Ao) |
| SPF | Specific Pathogen-free |
| TSM | Thickness Shear Mode |