Acronyms, Abbreviations, and Initialisms.
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The meaning of the Acronym SIA is...

SIA is

Superman's Insurance Agency

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

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