| Acronym | Meaning |
| IISCI | Initial Ionic State Comfiguration Interaction |
| ITFM | Intergovernmental Task Force On Monitoring |
| OD | Optical Density |
| BIRD | Bilinear Rotation Decoupling |
| ASA | At. Sphere Approxn. |
| SLMO | Strictly Localized Molecular Orbital |
| OIA | Office Of International Activities |
| MUCA | Molecular Unit Cell Approxn. |
| TDL | Tunable Diode Laser |
| DSH | Dye-sensitized Heterojunction |