The meaning of the Acronym SDR is...

SDR is

• Sony Dream Robot
• String Defined Randomizer
• Symmetrical Double Rectangle
• System Of Distinct Representatives
• Synchronized Dynamic Ram
• Synchronized Dyanamic Ram
• Sidelobe Decreasing Rate
• Single Duty Rate
• Sloppy Drunk And Ready
• Selective Dorsal Rhizotomy
• Sex Drugs And Rock
• Standard Data Rate

More Meanings For SDR:

• Software Defined Radio
• Special Drawing Rates
• Special Depository Receipt
• Special Drawing Right
• Singapore Depository Receipt
• Special Drawing Rights
• Stop, Drop, And Read
• Suddeutscher Rundfunk
• Sounder system Music
• SmartDraw drawing
• Systems of Distinct Representatives
• Software Design Review
• Software Design Requirements
• Session Directory Protocol
• Single Data Rate

SDR is also in:

• Educational
• Electronics
• File Extensions
• General
• Geology
• International Business
• Media
• Networking