| Acronym | Definition |
|---|
| STTD➣Space Time Transmit Diversity |
| STTD➣Spacetime Triangle Diagram Technique (physics) |
| STTD➣Special Tropical Disturbance Statement (National Hurricane Center) |
| STTD➣Single-Tube Test Device (thermal performance) |
| STTD➣Short-Term Temporarily Deferred |