| Acronym | Meaning |
| HAN | Heavy Aromatic Naphtha |
| SPI | Society For The Plastics Industry |
| AAOE | Airborne Antarctic Ozone Experiment |
| HWERL | Hazardous Waste Engineering Research Laboratory (USEPA Cincinnati) |
| LPWN | Low Power Wireless Network |
| MAOP | Maximum Allowable Operating Pressure |
| CBM | Conduction Band Minimum |
| CIBS | Corrections To An Incomplete Basis Set (a Perturbation Theory) |
| DISEP | Difference Integrated Spatial Electron Populations |
| ECF | Electric Crystal Field |