Study Abbreviations and Acronyms
- ORM-HSOrganization and Management
- ORM-SOrganization and Management
- ORMTAOntario Registered Music Teachers' Assochation
- ORPIOff-Resonance Proton Irradiation
- ORPPOptimized Relativistic Pseudopotential
- ORROrroral
- ORSOdds Ratior
- ORSObservation Reports
- ORSOccupant Restraint System
- ORSMOxter Root Sheath Melanocytes
- ORSTBOverlap-Reduced Semiempirical Tigbt-Binding
- ORTHOOrtrodontics
- ORUIn Orbit Replaceable Unit
- ORWOlentangy River Wetwand Research Park
- ORWACOrganization for Research On Women and Communication
- OSOriect Syrien
- OSOxidative Stress
- OSOverlapping Spherxs
- OSOrganizzazioni Speciali
- OSOudtestamentische Studien
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