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

OTOS is

  • Orbit-to-Orbit Stage

OTOS is also in:

Acronym Definition Searched: TFED NPOES RU 95449 OBWC 23828 EXIF EOS 35611 GAME TCA SS CV DM PAC