| Acronym | Meaning |
| DRF | Direct Reaction Field (for Intermol. Interactions) |
| GIWA | Global International Waters Assessment |
| MET | Many Electron Theory (for Singlet Ground State) |
| PAC | Polyaluminum Chloride |
| BLAST | Burst Locations With Arc Second Telescope |
| VIF | Valency-point Interaction Formula (in Graph Theory With At. And Mol. Orbitals) |
| SATI | Spectral Airglow Temp. Imager |
| BLCAO | Bilinear Combination Of Atomic Orbitals |
| BRM | Biological Response Modifier |
| GCL | Geosynthetic Clay Liner |