| Acronym | Meaning |
| IRI | International Reference Ionosphere |
| TIME | Temporally Integrated Monitoring Of Ecosystems |
| DCFCI | Density-constrained Full-configuration-interaction |
| FCM | Finite-cluster Model (for Calcns. On Electromigration) |
| ETIC | Environmental Teratology Information Center |
| KSR | Kinase Suppressor Of Ras |
| BMW | Boiler Maintenance Workstation [EPRI Software] |
| SXRF | Synchrotron X-ray Fluorescence |
| BOM | Bond Orbital Model |
| ADA | Adenosine Deaminase |