Department of Transportation 
Distributed Object Technology 
Dictionary of Occupational Titles 
Directly Observed Therapy 
Department of Tourism 
Department of Transport 
Deployment Operations Team 
Designated Order Turn-around 
Damage over Time 
Deep Ocean Technology 
Deep Ocean Transponder 
Deployed Operations Team 
Designated Order Turnaround 
diffuse optical tomography 
Distributed Object Technologies 
Domain-Tip 
Data Output Tape 
date of transfer 
Deep Ocean Trough 
Deep Offshore Technology 
Department of Operations and Training 
Department of Telecommunications 
Department of Trade 
Department of Transportation's 
Department of TransportRailCons 
Deployable Optometric Team 
Dept of Transportation 
Design Oriented Technology 
Designated Operational Tracker 
Designated Optical Tracker