Distributed Data Management 
Driver Door Module 
Drop Dynamics Module 
Data Display Module 
Discrete Data Management 
Doctor of Dental Medicine 
Driver's Door Module 
Data Demand Module 
Data Display Monitoring 
Data Distribution Management 
decoupled direct method 
Deployment Drive Mechanism 
Difference in Depth of Modulation 
digital data modem 
Dividend Discount Model 
Data Display Monitor 
Data Distribution Manager 
Data Driven Machine 
Deadlock Detection Mechanism 
Demand Dial Manager 
demineralized dentin matrix 
denuder difference method 
Department of Data Management 
Deph of Differential Modulation 
Depth of Differential Modulation 
Derived Delta Modulation 
Derrick Drilling Machine 
Design Data Manual 
Design, Drafting and Manufacturing 
Designated Defensive Marksman