| Acronym | Meaning |
| VMT | Vehicle Miles Traveled |
| IRRAS | Integrated Reliability And Risk Analysis System |
| HIV | Human Immunodeficiency Virus |
| TOCSY | Total Correlation Spectroscopy |
| GIS | Geographical Information System |
| ACNK | Al2O3/(CaO + Na2O + K2O) |
| QCDL | Quenched Cavity Dye Laser |
| UCEPA | Unitary Coupled Electron Pair Approximation |
| EDR | Electrodialysis Reversal |
| MBE | Many-body Expansion (in Mol. Potential Energy Surface Calcn.) |