Acronyms, Abbreviations, and Initialisms.
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The meaning of the Acronym OPSO is...

OPSO is

  • On Public Service Only

OPSO is also in:

Acronym Definition Searched: POMS XWS 18816 TUPE 17985 49611 WYZB DJ ISIS QDSI KRIS 33111 SVC NTPF GAF