| Acronym | Meaning |
| ABF | Activated Biofilter |
| ADF | Adult T-cell Leukemia-derived Factor |
| IRP | Internal Reflection Photolysis |
| NADB | National Air Data Branch (US EPA) |
| ZSR | Zdanovskii-Stokes-Robinson [model] |
| IMS | Intelligent Manufacturing Systems |
| PAFC | Phosphoric Acid Fuel Cells |
| PZC | Polyzirconium Compound (isopropyl Alc.-zirconium Chloride Copolymer) |
| OE | Office Of Enforcement |
| MFR | Melt Flow Ratio |