Definition of Posix in English:

Share this entry


Pronunciation: /ˈpɒsɪks/


[mass noun] Computing
A set of formal descriptions that provide a standard for the design of operating systems, especially ones which are compatible with Unix.
Example sentences
  • If the community can sort out some issues between Linux and Posix, the user community may choose to adopt those interfaces, but they will vote with their feet not in a consortium.
  • QNX is also Posix compliant, so there is lots of software that almost works under it.
  • Carrier-grade features to be added include support for Posix compliant threading, diskless blade systems, improved systems responsiveness, and advanced debugging and systems analysis.


1980s: from the initial letters of portable operating system + -ix suggested by Unix.

For editors and proofreaders

Line breaks: Posix

Share this entry

What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.