Our 'Attic' has 21 unverified meanings for OAO
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| Rank Abbr. | Meaning | |
|---|---|---|
| OAO | Opening All Options | |
| OAO | Optical Astronomy Observatories | |
| OAO | Okayama Astrophysical Observatory | |
| OAO | Opticians Association of Oregon | |
| OAO | Orbiting Astronomical Observatories | |
| OAO | Operation of Oil | |
| OAO | operation and after operative | |
| OAO | Oklahoma Academy of Ophthalmology | |
| OAO | Other Authorised Operators | |
| OAO | OCEAN ACOUSTIC OBSERVATORY | |
| OAO | Okayama Astronomical Observatory | |
| OAO | Office of Academic Opportunities | |
| OAO | Of Aircraft Operations | |
| OAO | Office of the Associate | |
| OAO | Options Advisory Office | |
| OAO | Orbital Astronomical Observatory | |
| OAO | Online Activism Organization | |
| OAO | Online Activism Organizations | |
| OAO | Operator And Owners | |
| OAO | Oulun Ammattikorkeak Oulu | |
| OAO | Oyston Associates in Orillia | |
Note: Acronym Finder has 19 verified definitions for OAO