| Acronym | Meaning |
| PPA | Pollution Prevention Act (of 1990) |
| COBE | Cosmic Background Explorer Satellite (NASA) |
| PBB | Polybrominated Biphenyl |
| IAP | Intermittent Aeration Process (for Waste Treatment) |
| NMP | Nuclear Microprobe |
| DFMFT | Density-functional Mean-field Theory |
| STPM | Scanning Thermopower Microscopy |
| VOA | Volatile Organic Aromatic Compounds |
| ECOIN | European Core Inventory |
| ICON | International Council On Nanotechnology |