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: PNMSVC SJX RAP FUJ WBB GSM GVSR 74131 ECCO HDD ERTS SAF MIF GSIC 03582