The meaning of the Acronym SDI is...

SDI is

• Steel Deck Institute
• Steel Door Institute

More Meanings For SDI:

• Software Distribution Network Info file
• Structured Data Interface
• Single Document Interface
• Serial Digital Interface
• Subsurface Drip Irrigation
• Stupid, Dumbell, Idiot
• Standard Deviation Index
• Serial Data Input
• Squirrel Defense Initiative
• Secure Driver Interface
• Serial Digital Interfacesdi
• Slightly Deranged Individual
• Suction Diesel Injection
• Spatial Data Infrastructure
• Semi Directional Injection

SDI is also in:

• Chemistry
• Farming
• File Extensions
• Funnies
• General
• Software
• Unfiled