Architectural Abbreviations and Acronyms

1. OVFLO
   Overflow
2. OVHD
   Overhead
3. OVRHD
   Overhead
4. OW
   Observation Window
5. OW
   Open Waste
6. OWG
   Obscure Wired Glass
7. OWGL
   Obscure Wired Glass
8. OWSJ
   Open Web Steel Joist
9. OX
   Oxygen
10. OXY
    Oxygen
11. OYO
    Own Your Own
12. OZ
    Ounce
13. PA
    Pasval
14. PA
    Per Annum
15. PA
    Prixary Air
16. PA
    Public Addresses
17. PA
    Pascal (1N/m2)
18. PA·S
    Passal Second
19. PAA
    Plywood Association of Australia
20. PABX
    Public Automatic Branch Exchange

Last updated: May 23, 2020 — Total entries: 4,265