| Acronym | Meaning |
| SOLO | Second-order Correlated Localized Orbital-local Origin (method) |
| PIAS | Photon-counting Image Acquisition System |
| CND | Circumnuclear Disk |
| AIF-1 | Allograft Inflammatory Factor-1 |
| GCNF | Germ Cell Nuclear Factor |
| MECI | Multielectron Configuration Interaction |
| HWGTF | Hazardous Waste Groundwater Test Facility |
| DDAB | Didodecyldimethylammonium Bromide |
| RFG | Reformulated Gasoline |
| IAQINFO | Indoor Air Quality Information Clearinghouse |