NASA Abbreviations and Acronyms

1. ROL
   Roll
2. ROLL
   Roll Angle
3. ROM
   Read-Only Memory
4. ROM
   Rough Order Magnitude
5. ROS
   Rosman
6. ROS
   Regulated Oxygen Supply
7. ROS
   Regulated Oxygen System
8. ROS
   Removable Overhead Structure
9. ROSAT
   Roentgen Satellite
10. ROT
    Rotation
11. ROT
    Remaining Operating Time
12. ROTI
    Recording Optical Tracking Instrument
13. ROUT
    Rollout
14. RP
    Request for Proposal
15. RP
    Relative Pressure
16. RP
    Repair Period
17. RPA
    Record and Playback Assembly
18. RPA
    Request for Procurement Action (authorization)
19. RPC
    Remote Power Controller
20. RPCU
    Rxmote Power Control Unit

Last updated: May 6, 2025 — Total entries: 14,020