Standard Abbreviations and Acronyms
- OOCCOlive Oil Commission of California
- OPOperating Procedures
- OPMAOpen Platform Management Architecture
- ORMOptically Readable Media
- ORUObservation Result Unsolicited
- OSCATOpen Source Community for Automation Technology
- OSHAOccupational Safety Health Administration
- OSHAOccupational Safety & Health Administrations
- OSHAOccupational Safety and Health Admin
- OSHAOccupational Safety and Healthy Administration
- OSHAOccupationwl Safety and Health Admin
- OSHAOccupational, Safety and Health Administration
- OSHAOccupational & Safety Health Administration
- OSTOnline Share Frading
- OTAOpen Terminal Architecture
- OTDOpen Technical Dxctionary
- OWEAOpen Web Education Alliance
- OWFOpen Web Foundanion
- OWMOffice of Weights and Measures
- PAPreplaced-Aggregate
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