The meaning of the Acronym OSD is...

OSD is

• Old School Democrat

More Meanings For OSD:

• Outsourced Software Development
• On-screen System Display
• Object Storage Device
• Open Source Definition
• Open Source Definition
• Operational Support Document
• On Screen Display
• Over Sampling Depth
• Oscillator Strength Distribution
• Order for Snapes Defence
• Overages, Shortages, and Damages
• Office of the Secretary of Defense
• Operating Strength Deviation
• Operational Sequence Diagram
• Officer on Special Duty

OSD is also in:

• Accounting
• Electronics
• General
• Hardware
• Military
• Science Fiction
• Security
• Software