What does OO stand for?

What does OO mean? This page is about the various possible meanings of the acronym, abbreviation, shorthand or slang term: OO.

We've found a total of 29 definitions for OO:

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OO

Optimum Organic

Miscellaneous » Unclassified

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OO

Outer Office

Business » General

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OO

Order Online

Business » General

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OO

Octopus Overlords

Miscellaneous » Science Fiction

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"OO." Abbreviations.com. STANDS4 LLC, 2015. Web. 4 Sep. 2015. <http://www.abbreviations.com/OO>.