Physics Abbreviations and Acronyms

1. ORELA
   Oak Ridge Electron Linear Accelerator
2. ORM
   Office of Radiation Measurement
3. ORNL
   Oak Ridge National Laboratory's
4. ORP
   Optimization of Radiation Protection
5. ORT
   Oak Ridge Tennessee
6. OS
   Optics and Spectroscopy
7. OS
   Oppenheimer and Snyder
8. OS
   Optics Section
9. OSA
   Optical Society of America
10. OSL
    Optical Stimulated Luminescence
11. OSP
    Of Open Source Physics
12. OSPL
    Output Sound Pressure Level
13. OSQ
    Orientation Space Quantization
14. OSR
    Ontic Srructural Realism
15. OSRD
    Office of Standard Reference Data
16. OSTP
    Office of Science and Technology Policy
17. OSTP
    One Step Transition Probability
18. OSU
    Ohio State University Airport, Columbus, Ohio, United States
19. OSV
    Optically Strong Variable
20. OTA
    Optical Tube Assembly (telescopes)

Last updated: May 6, 2025 — Total entries: 5,354