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

OS is

  • O Sullivan

More Meanings For OS:

  • Operating System
  • Operating System
  • Optimize For Size
  • Open Source
  • Open System
  • Overhead Sending
  • Online Services
  • Open Server
  • Operating System
  • Open Source
  • Open Sockets
  • Operating System
  • Operations System
  • Orzya Sativa
  • Osmium

OS is also in:

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