| Acronym | Meaning |
| PAB | Pollutant Assessment Branch (US EPA) |
| USB | Universal Serial Bus |
| EMAT | Effluent Microtox Acute Toxicity |
| CCIX | Continuous Countercurrent Ion Exchange |
| RPI | Radius Polydispersity Index |
| ISX | Insoluble Starch Xanthate (ion Exchanger For Wastewater Treatment) |
| ETO | Elliptical-type Orbital |
| GBM | Glomerular Basement Membrane |
| ACH | Air Changes Per Hour |
| SWFM | Scanning Work Function Microscopy |