| Acronym | Definition |
|---|
| TDT➣Televisión Digital Terrestre (digital television type, Spain) |
| TDT➣Temple Daily Telegram (newspaper) |
| TDT➣Terminal Deoxynucleotidyl Transferase (biochemistry) |
| TDT➣transmission disequilibrium test |
| TDT➣Topic Detection and Tracking (datamining) |
| TDT➣Terrestrial Dynamical Time (obsolete form of TT) |
| TDT➣Transaction Dump Table |
| TDT➣Terrestrial Digital Television |
| TDT➣Turbo Diesel Touring |
| TDT➣Tourist Development Tax |
| TDT➣Tucker-Davis Technologies (Alachua, FL) |
| TDT➣Toronto Dance Theatre |
| TDT➣Tag Data Translation |
| TDT➣Time Domain Transmission |
| TDT➣Training Development Team (various organizations) |
| TDT➣Tasmanian Digital Television (Australia) |
| TDT➣Transonic Dynamics Tunnel |
| TDT➣Thermal Decay Time |
| TDT➣The Domino Theory (band) |
| TDT➣Tredegar Development Trust (UK) |
| TDT➣Theater Display Terminal |
| TDT➣Transparent Digital Transmodulator (telecommunications) |
| TDT➣Total Decompression Time |
| TDT➣Test Data Team |
| TDT➣Target Designator Transmitter |
| TDT➣Tactical Display Terminal |
| TDT➣Tentative Discharge Tomorrow |
| TDT➣Training Development Technician |
| TDT➣Timing with Dirty Templates Algorithm |
TDT - (astronomy) a measure of time defined by Earth's orbital motion; terrestrial time is mean solar time corrected for the irregularities of the Earth's motions