| Acronym | Meaning |
| SETB | Semiempirical Tight Binding |
| PO-MO | Pars Orbital-MO |
| ESO | European Southern Observatory |
| EVB | Effective Valence Bond (hamiltonian) |
| CDOM | Colored Dissolved Organic Matter |
| FY | Fiscal Year |
| ADR | Adverse Drug Reaction |
| TSFZ | Traveling Solvent Floating Zone |
| BFS | Blast Furnace Slag |
| ACIS | Advanced CCD Imaging Spectrometer |