The meaning of the Acronym SP is...

SP is

• Spine, spinal
• Sleep Paralysis
• Soft Penis

More Meanings For SP:

• Single Precision
• Stack Pointer
• System Procedure
• Service Pack
• Compressed file archive (Splint)
• Space
• Stops Processing
• Special Performance
• Single Processor
• Security Potential
• Secure Proxy
• Service Pack
• Smart Pointer
• Starting Pixel
• Social Points

SP is also in:

• Assembly
• Chat
• Drivers
• File Extensions
• General
• Hardware
• Security
• Software