| Acronym | Definition |
|---|
| TGSI➣Temperature at Ground Snow Interface |
| TGSI➣Trans Global Services, Inc. (Houston, TX) |
| TGSI➣Tactile Ground Surface Indicator |
| TGSI➣Transactions of the Gaelic Society of Inverness (journal) |
| TGSI➣Thyroid Growth Stimulating Immunoglobulin |
| TGSI➣Tungsten Graphics Shader Infrastructure |