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What does OAO stand for?

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Rank Abbr.Meaning
OAOOwned and Operated
OAOOrbiting Astronomical Observatory
OAOOver and Out
OAOOne And Only
OAOOntario Association of Orthodontists
OAOOntario Association of Optometrists
OAOOpticians Association of Ohio
OAOOrthogonalized Atomic Orbital
OAOOffice of Appellate Operations (US Social Security Administration)
OAOOtkrytoe Aktsionernoe Obschestvo (Russian: Open Joint Stock Corporation)
OAOOne Among Others
OAOOrbital Analysis Officer
OAOOther Authorised Operator (telecommunications)
OAOOregon Academy of Ophthalmology
OaOOverall Opinion (marketing)
OAOObjective Area Officer
OAOOffice of Administrative Operations (US DOC)
OAOOffice of Advocacy and Outreach (USDA)

Note: We have 22 other definitions for OAO in our Acronym Attic