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: SIIP CCU WTNN SDF FM YPI IFHE 77533 MSY 02128 ICRF 59029 PCFS LFST SMARTS