| Acronym | Meaning |
| SDG | Signed Directed Graph (model) |
| DPC | Differential Photocalorimetry |
| HMA | Hot Mix Asphalt |
| ECH | Electron Cyclotron Heating |
| JFET | Junction Field-effect Transistor |
| BS | Breathing Sphere (approxn. In Mol.-scattering Calcns.) |
| PNA | Peptide Nucleic Acid |
| MIR | Maximum Individual Risk |
| NAO | Natural Atomic Orbital |
| QDVPT | Quasidegenerate Variational Perturbation Theory |