What does SIO mean in Language Codes (3 Letters)?
This page is about the meanings of the acronym/abbreviation/shorthand SIO in the Regional field in general and in the Language Codes (3 Letters) terminology in particular.
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SIO also stands for:
- Scalable Input/ Output Initiative
- Scripps Institution of Oceanography
- Senior Intelligence Officer
- Senior Investigating Officer
- Serial Input/Output
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