| Acronym | Meaning |
| CWA | Clean Water Act |
| AIAA | American Institute Of Aeronautics And Astronautics |
| VEEH | Variable Electronegativity Extended Hueckel Method |
| RONALD | Rocketborne Optical Neutral Gas Analyzer With Laser Diodes |
| CPVC | Chlorinated Polyvinyl Chloride |
| ANR | Adiabatic Nuclear Rotation (in Calcns. On Mol. Collisions) |
| APTI | Air Pollution Training Institute |
| ABWAG | Abwasserabgabengestres (Germany Wastewater Discharge Law Regulates Cost Per Volume) |
| SWRRB | Simulation For Water Resources In Rural Basins |
| SQRD | Square Root Darwin Term (correction To T And V Operator) |