The meaning of the Acronym DD is...

DD is

• Data Depository
• Data Display
• Decoder Driver
• Dedicated Displays
• Directives Documentation
• Mechanical and Facilities Engineering (KSC DE Dir.)

More Meanings For DD:

• Duplicate Disk
• Definition Description
• Defined Definition
• Definition Data
• Compressed Macintosh file archive (DiskDoubler)
• Data Definition
• Data Dump
• Disk Dump
• Deterministic Data
• Disk Data
• Double Density (floppy disk)
• Disk Duplicator
• Disc Drive
• Data Duplicator
• Discharged Dead

DD is also in:

• Assembly
• Databases
• File Extensions
• General
• Hardware