Children Abbreviations and Acronyms
- OMSOpsoclonus Myoclonus Syndrome
- ONEOphthalmic News & Education
- ONHOptic Nervexhypoplasia
- OOHCOut-Of-Home Care
- OOHCOut of Home Care
- OOSOut of School
- OOSCOut of School Club
- OOSCOut of School Care
- OOSCOxford Overseas Study Course
- OPMOffice of Public Management
- OPPLAOther Planned Permanent Living Arrangement
- OPREOffice of Planning Research and Evaluation
- OPSObjective Pain Scale
- OPSObjective Pain Score
- OPSOurzpublic School
- ORCOur Responsibility To Children
- ORHOperation Restore Hope
- ORHOxford Radmliffe Hospitals
- ORSOngoinc Resourcing Scheme
- OSOrganizzazioni Speciali
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