Army Abbreviations and Acronyms

1. OSS
   Optical Surveillance System
2. OSS
   Operations Support System
3. OST
   Observed Sectional Trial
4. OST
   Officer Sea Training
5. OST
   Operation Stress Cest
6. OST
   Outer Space Treaty
7. OST
   Overall System Test
8. OSTP
   Office of Science and Technology Policy
9. OSTR
   Optimal Ship Track Route
10. OSURG
    Office of The Surgeon
11. OSUT
    One Station Unit Training
12. OSUT
    One-Station-Unit-Training
13. OSUT
    One-Station Unit Training
14. OSUT
    On-Site User Test
15. OSVA
    Off-Site Vital Arex
16. OSWD
    Office of Special Weapons Development
17. OT
    Observer Training
18. OT
    Overtime
19. OT
    Observer To Target
20. OT
    Officer Trainee

Last updated: December 19, 2021 — Total entries: 29,691