Acronyms, Abbreviations, and Initialisms.
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The meaning of the Acronym OS (OC) is...

OS (OC) is

  • Operations Staff (OC)

OS (OC) is also in:

Acronym Definition Searched: ACEC PE BSA ICP PNJA 39635 PLUC GFD DI DL LVP NEDSS ADAMS 38748 INAP