The meaning of the Acronym SIA is...

SIA is

• Solar Inertial Attitude
• Software Impact Assessment
• Shuttle Induced Atmosphere

More Meanings For SIA:

• Semiconductor Industry Association
• Student Internet Association
• Students' Internet Association
• Superman's Insurance Agency
• Samurai In Action
• Security Integration Architecture
• Singapore Institute Of Architects
• Singular Indefinite Article
• Statics Integrated Assessment
• Secret Imperial Assassins
• A Self Interstitial Atom
• Sobriety In Action
• Sorry Im Afraid
• Strategic Investment Area
• Spectrophotometric Intracutaneous Analysis

SIA is also in:

• Electronics
• Funnies
• Physiology
• Science Fiction
• Unfiled
• Universities