The meaning of the Acronym SIB is...

SIB is

• Self Inflicted Behavior
• Special Investigation Branch
• Slayers In Black

More Meanings For SIB:

• Swiss Institute Of Bioinformatics
• Scale Index Base
• Saiyan In Black
• Saints In Black
• Self Inductance By
• Self Injuries Behavior
• Small Is Beautiful
• Skeith Iced Bun
• Static Input Block
• Simple Interpreter Builder
• Single Ignition Box
• Suck It Bitch
• Securities And Investments Board
• Society for Industrial Biology
• Severely Injured Brain

SIB is also in:

• Human Genome
• Physiology
• Unfiled
• Universities