| Acronym | Meaning |
| ACPF | Averaged Coupled Pair Functional |
| EMER | Electromagnetic Molecular Electronic Resonance |
| MERIE | Magnetically Enhanced Reactive Ion Etching |
| AIAA | American Institute Of Aeronautics And Astronautics |
| BGK | Bhatnagar-Gross-Krook (kinetic-theory Model For Reactive Collisions) |
| IAM | Independent Atom Model |
| MVEG | Motor Vehicle Emissions Group |
| PRTD | Proportional Residence Time Distribution (of Liquid Streams In Equalization Basins In WWT) |
| IFW | Image File Wrapper |
| USEPA | United States Environmental Protection Agency |