NASA Abbreviations and Acronyms

1. EOPF
   End of Powered Flight
2. EOPO
   Equal Opportunity Program Office
3. EOPP
   Experiments of Opportunity
4. EOQ
   End of Quarter
5. EOR
   Earth Orbit Rendezvous
6. EORQ
   Engineering Order Request for Quotation
7. EORSAT
   Electronic Ocean Reconstruction Satellite
8. EOS
   Extended Operating System
9. EOS
   Earth Observation Satellite
10. EOS
    Emergency Oxygen System
11. EOS
    Earth Observing System (U.S.)
12. EOS
    Earth Orbit Shuttle
13. EOS
    Emergency Oxygen Supply
14. EOS
    Earth Observatory Systems
15. EOSDIS
    Earth Observing System Data Information System
16. EOSH
    Electro-Optical Sensor Hardening
17. EOT
    End of Tape
18. EOTF
    Engineering Order To Follow
19. EOTS
    Electro-Optical Threat Sensor
20. EOV
    Electrically Operated Valve

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