English Explanatory Dictionary

OS X

English dictionary entry

Meanings

name
  1. Former name of macOS; itself formerly known as Mac OS X.

Pronunciation

/əʊˌɛsˈtɛn/ /oʊˌɛsˈtɛn/ /əʊˌɛsˈɛks/ /oʊˌɛsˈɛks/

Word forms

OS X

Etymology

Ellipsis of Mac OS X; from OS (“operating system”) + X (“ten”, Roman numeral), as a successor to Mac OS 9.

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