Definition of Unix in English:

Unix

(also UNIX)

noun

Computing
trademark
  • A widely used multiuser operating system.

    • ‘Still, there is big money in Unix hardware and software and plenty of developers and admins to go around.’
    • ‘The company takes repeated shots at Unix operating systems but has little to show for the claims.’
    • ‘Some of its earliest products were thin client terminals designed for Unix users.’
    • ‘Instead, Microsoft hopes to divert those moving from Unix and considering Linux.’
    • ‘It's a tutorial aimed at helping Unix and Linux users get optimal performance out of their operating system.’

Origin

1970s: from uni- one + a respelling of -ics, on the pattern of an earlier less compact system called Multics.

Pronunciation:

Unix

/ˈyo͞oniks/