| Acronym | Meaning |
| CBM | Carbon Bond Mechanism (air Pollution Modeling) |
| CCOM | Coupled Channel Optical Method |
| CIPW | Cross, Iddings, Pirrson, And Washington (for Geology Terminology) |
| LDEF | Long Duration Exposure Facility (for Spacecraft Material Testing) |
| HCA | Hierarchical Cluster Analysis |
| POTW | Publicly Owned Treatment Works |
| WIG | W-inert Gas Welding |
| PVEC | Photovoltaic Energy Conversion |
| LRTAP | Long-range Transboundary Air Pollution |
| IAPPS | International Association For The Plant Protection Sciences |