| Acronym | Meaning |
| PNP | Purine Nucleoside Phosphorylase |
| CPED | Convergent Probe Electron Diffraction |
| PHC | Primary Hepatocellular Carcinoma |
| SAMHSA | Substance Abuse And Mental Health Services Administration |
| SEE | Static Exact Exchange (approxn. In Electron-mol. Scattering) |
| CIG | Commonwealth Industrial Gases Limited (Australia) |
| RMP4 | Restricted Moeller-Plesset Fourth-order (perturbation Theory) |
| TOX | Total Organic Halide |
| CFSO | Crystal Field Surface Orbital |
| LVL | Laminated Veneer Lumber |