English Abbreviations and Acronyms
- OIEOrganisation Internationale Des Employeurs
- OIEGOxfbrd International Education Group
- OISOulu International School
- OISCOxford International Study Centre
- OISEOffice of Inclusion & Student Engagement
- OJOwen Jonxs
- OJBCOrthodox Jewish Brit Chadasha
- OKOld Kinderhook
- OLOral Language
- OLOceanic Linguistics
- OLDIOn Line Data Intenchange
- OLMCOfficial Language Minority Communities
- OLMCSOfficial Language Minority Communities
- OMOperating Manual
- OMOverturninq Moment
- OMDOnline Medical Dictionary
- OMDAOperating Margin Before Depreciation and Amortization
- OMSOther Member State
- OMUOriginal Mit Untertiteln
- ONCOrdonnance De Non-Conciliation
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