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

O/O is

  • On Orbit

O/O is also in:

Acronym Definition Searched: RAVE GGG ATSC ATT TEMPEST 74859 FMCV OV 30008 DesignCon MSCK EPAP VSM TJW L