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

POSIX is

  • Portable Operating System Interface based on UNIX

More Meanings For POSIX:

  • Portable Operating System Interface based on UNIX
  • Portable Operating System Interface based on UNIX
  • Portable Operating System Interface based on UNIX (IBM)

POSIX is also in:

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