The meaning of the Acronym SID is...

SID is

• Support For Instructional Designers
• Serious In Design
• Scientific Investigation Division
• Sports Information Director

More Meanings For SID:

• Simple Information Database
• Security Identifier
• PlaySID tunes and sound effects file
• Searchable Image Database
• System Installation Diskette
• Subunit Interaction Domain
• System IDentifier
• Shared Information Distance
• Security In Depth
• Security IDentifier
• Still In Development
• Software Item Description
• School of Interior Design
• Slew Induced Distortion
• Sudden Ionosphere Disturbance

SID is also in:

• Architecture
• Databases
• Drivers
• Electronics
• File Extensions
• General
• Hardware
• Meteorology
• Networking
• Security
• Software