International Abbreviations and Acronyms

1. OIRO
   Oláh Ibolya Rajongói Oldal (Hungarian)
2. OJ
   Official Journal
3. OM
   'OM', old man, male amateur radio operator, licensee, contactee
4. OMG
   Oh My Gandhi
5. ON
   Inane, insane, ane/ ane form about the possessive case about use on as an attributive adjective
6. ONUC
   Operations Des Nations Unies Au Congo
7. ORD
   Chicago O'Hare International Airport, Chicago, Illinois. USA.
8. OSRS
   Odbojkaski savez Republike Srpske (Croatian)
9. OTA
   OpenTravel Alliance
10. OWG
    Olympic Winter Games
11. OXOXO
    Hugs and Kisses
12. OZN
    Obiect Zburator Neidentificat
13. PAHO
    Pan American Health Organization
14. PC
    Police Constable
15. PC
    Postal Code [United Kingdom]
16. PCIJ
    Permanent Court of International Justice
17. PCT
    Patent Cooperation Treaty
18. PDQ
    fast [pretty quick]
19. PFT
    Wireless Pervasive Computing
20. PICMET
    Portland International Conference On Management of Engineering and Technology

Last updated: May 24, 2020 — Total entries: 703