The meaning of the Acronym SD is...

SD is

• Secure Digital
• Self Delete
• Secure Data

More Meanings For SD:

• Doctor of Spirituality
• Sketch Dimension
• Smoke Detector
• Sun Deck
• Specification & Description
• Structured Design
• Small Dual in-line package
• Static Dissipation
• Statistical Division
• Sound Dampened
• Synchronous Dynamic
• Standard Definition
• Structured Design
• Standard Deviation
• Strength Divisor

SD is also in:

• Academic Degrees
• Architecture
• Chemistry
• Electronics
• Mathematics