macOS

Pronunciation: /ˌmækoʊˈɛs/

The English word “macOS” has 1 meaning listed here.

proper noun

A major operating system, formerly known as OS X (and before that as Mac OS X), used on laptop and desktop computers by Apple Inc.

From Mac (“Macintosh”) + OS (“operating system”).

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Definitions are from Wiktionary, extracted by Kaikki.org, and are available under the CC BY-SA 4.0 licence.