| Acronym | Meaning |
| IPC | International Patent Classification |
| HTHS | High-temperature High-shear |
| D.I. | Direct Injection [of Diesel Engines] |
| FBC | Fluidized Bed Combustor |
| STIB | Stratosphere-Troposphere Interactions And The Biosphere |
| SGHWR | Steam-generating Heavy Water Reactor |
| LEU | Low Enrichment Uranium |
| LFT | Liver Function Test |
| UNESCO | United Nations Educational |
| ISX | Impurity Study Expt. |