| Acronym | Meaning |
| PVA | Polyvinyl Alcohol |
| QCA | Quasichemical Approxn. (in Calcns. On Semiconductors) |
| TRFQ | Time-resolved Fluorescence Quenching |
| CWT | Centralized Waste Treatment |
| NAEG | Nevada Applied Ecology Group (of US Department Of Energy) |
| P-T-T-D | Pressure-temperature-time-deformation Path (for Metamorphic Rocks) |
| ASIDIC | Association Of Information And Dissemination Centers |
| EAE | Experimental Allergic Encephalomyelitis |
| POG | Post-orogenic Granitoids |
| GAC | Granular Activated Carbon |