| Acronym | Meaning |
| ORD BBS | ORD Electronic Bulletin Board System |
| LT1ESWTR | Long Term 1 Enhanced Surface Water Treatment Rule |
| EPC | Epoxy Polymer Concrete |
| SAC | Symmetry-adapted Cluster (expansion Method For Calcg. Wave Functions) |
| DUVAS | Derivative Ultraviolet Absorption Spectrometer |
| MOG | Myelin Oligodendrocyte Glycoprotein |
| SSOP | Sequence Specific Oligonucleotide Probe |
| NSCF | Non-self-consistent Field |
| MVEL | Motor Vehicle Emission Laboratory |
| INA | Ion Neutral Analysis |