O.S. - Opportunity to Serve
O.S. stands for Opportunity to Serve
Here you will find, what does O.S. stand for in Military under Government category.
Popular queries with answer
How to abbreviate Opportunity to Serve? Opportunity to Serve can be abbreviated as O.S. What does O.S. stand for? O.S. stands for Opportunity to Serve. What does Opportunity to Serve mean?Opportunity to Serve is an expansion of O.S.
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Alternative definitions of O.S.
- Open Source
- Open Source
- Operating System
- Operating System
- Operating System
- Operating System
- Operating System
- Operating System
View 133 other definitions of O.S. on the main acronym page