| Acronym | Meaning |
| CWF | Coal-water Fuel |
| ESWTR | Enhanced Surface Water Treatment Rule |
| ECE | Electrical Conductivity Of Saturation Extract (soils) |
| RIR | Reference-intensity Ratio |
| APSIS | Athenian Photochem. Smog Intercomparison Of Simulations |
| DBF | Dibutyl Fumarate |
| EDF | Energy Density Functional (theory In Electronic-property Calcn.) |
| BMRB | Bio Mag Res Bank |
| BEW | Base (or Biological) Equivalent Weight |
| VVHAP | Very Volatile Hazardous Air Pollutant |