| Acronym | Meaning |
| UNAMAP | Users' Network For Applied Modeling Of Air Pollution |
| TF/SC | Trickling Filter/Solids Contact Process (for Wastewater Treatment) |
| LFECA | Low Frequency Eddy Current Array |
| MGS/TES | Mars Global Surveyor Thermal Emission Spectrometer |
| SSULI | Special Sensor Ultraviolet Limb Imager |
| GIAO | Gage-including Atomic Orbital |
| JURIS | Justice Retrieval And Inquiry System |
| ISI | Information Systems Inventory |
| FOJT | First-order Jahn-Teller |
| POH | Purgeable Organic Halogen(s) |