| Meaning | Category |
| Daily Training Messages | Governmental->Military |
| Dark Tall Man | Internet->Chat |
| Data Transfer Mechanism | Computing->Networking |
| Data Transfer Module | Governmental->Military |
| Database Table Manager | Computing->Databases |
| Datamonitor, PLC | Business->Firms |
| DeCentralized Trade Management | Business->General |
| Defect Test Monitor | Academic & Science->Electronics |
| Defending The Monolith | Computing->Software |
| Delay Time Multiplier | Academic & Science->Electronics |
| Demographic Transition Model | Community |
| Department of Terrestrial Magnetism | Academic & Science->Geology |
| Deterministic Turing Machine | Community->Media |
| Detroit Techno Militia | Community->Music |
| Deutsche Tourenwagen Masters | Governmental->Transportation |
| Deutsche Tourenwagen Meisterschaft | Business->Firms |
| Deutschen Tourenwagen Masters | Business->Firms |
| Development Team Member | Business->General |
| Device Test Module | Academic & Science->Electronics |
| DigiOp Transaction Manager | Computing->Software |
| Digital Tape Master | Computing->General |
| Digital Terrain Map | Academic & Science->Electronics |
| Digital Terrain Model | Academic & Science->Ocean Science |
| Direct To Metal | Business->Products |
| Dispersion Test Module | Computing->Software |
| Disregard Timing Mechanism | Miscellaneous->Toastmasters |
| Distance To Mate | Medical->Veterinary |
| Distinguished Talking Machine | Miscellaneous->Toastmasters |
| Distinguished Team Members | Miscellaneous->Toastmasters |
| Distinguished ToastMaster | Miscellaneous->Awards & Medals |
| Distinguished Toastmaster | Miscellaneous->Toastmasters |
| Don't Think Much | Business->General |
| Don't Time Me | Miscellaneous->Toastmasters |
| Don't Trust Me | Internet->Chat |
| Dortmund Airport, Dortmund, Germany | Regional->Airport Codes |
| Down The Middle | Community->Sports |
| Down Time Management | Computing->General |
| Driver Test Manager | Computing->Drivers |
| Dynamic Thermal Management | Computing->Hardware Academic & Science->Physics |
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