| Acronym | Meaning |
| OCR | Optical Character Recognition |
| VOC | Viable Organism Count |
| SWRRB | Simulation For Water Resources In Rural Basins |
| TMP | Thermomechanical Pulping |
| VGF | Vertical Gradient Freeze |
| GLWQB | Great Lakes Water Quality Board |
| OBD | On-board Diagnosis |
| EEL | Environmental Exposure Levels |
| EAR | European Asthenospheric Reservoir (mantle Source For Tertiary-Quaternary Volcanism) |
| PNO | Pseudonatural Orbital |