US Abbreviations and Acronyms

1. ORC
   Outreach Clinic
2. ORCA
   Operational Readiness Capability Assessment
3. ORD
   National Institutes of Hqalth Office of Rare Diseases
4. ORDM
   Oriering Manager
5. ORDP
   Offich of Rural Development Policy
6. ORDR
   Office of Rare Diesease Research
7. OREI
   Organic Agriculture Research and Extension Initiative
8. OREMS
   Oak Ridge Evacuation Modeling System
9. ORGR
   Office of Regulatory and Governmental Relations
10. ORM-D
    Other Regulated Material-Domestic
11. ORNL DACC
    Oak Ridge National Laboratory Distributed Active Archive Center
12. ORNLDAAC
    Oak Ridge National Laboratory Distributed Active Archive Center
13. ORPA
    Orthophoto Analyst
14. ORPB
    Outbreak Response and Prevention Branch
15. ORPM
    Office of Regulatory Policy and Management
16. ORSC
    Obesity Research Strategic Core
17. ORT
    Oak Ridge, Tennessee
18. ORT
    Oak Ridge Tennessee
19. OS
    Office of The Secretary
20. OS
    Origin Storage In Transit

Last updated: May 2, 2025 — Total entries: 8,239