| Acronym | Meaning |
| RTCDW | Relativistic Target Continuum Distorted Wave (approxn. For Electron Capture In Ion-atom Collisions) |
| HAZW | Hazardous Waste Collection Database (accessible Through OLS) |
| QCA | Quasichemical Approxn. (in Calcns. On Semiconductors) |
| UDI | Utility Data Institute (power Generation) |
| NDB | Nondefective Bonding |
| LVL | Laminated Veneer Lumber |
| PTEAM | Particle Total Exposure Assessment Methodology |
| PNGV | Partnership For A New Generation Of Vehicles |
| PKC | Protein Kinase C |
| HWIF | Hazardous Waste Incineration Facility Design And Modeling Computer Program |