| Acronym | Meaning |
| PROC | Photochemically Reactive Organic Compound(s) |
| BPR | Biological Phosphorus Removal |
| CATS | Corrective Action Tracking System |
| MES | Methyl Ester Sulfonates (surfactants) |
| FFAR | Fuel And Fuel Additive Registration |
| PIRL | Polyimide Release Layer |
| TACT | Trans Alaska Crustal Transect |
| MCRT | Mean Cell Residence Time |
| AGNPS | Agricultural Non-point Source Pollution |
| TSH | Tensor Surface Harmonic (method In Bonding Of Metal Clusters) |