Definition of iOS in English:

iOS

Syllabification: iOS
Pronunciation: /ˌīōˈes
 
/

noun

( trademark in the UK)
An operating system used for mobile devices manufactured by Apple Inc. [as modifier]: both the iPod touch and the iPad are iOS devices
More example sentences
  • Having a solid understanding of the evolution of Mac OS and iOS will be a challenge.
  • They are intended to be read only from the iBooks app on an iOS device.
  • For my part, I like Apple's approach to the iOS platform.

Origin

early 21st century: from i- as in iPod and other products manufactured by Apple Inc. and an abbreviation of operating system.

Definition of iOS in:

Get more from Oxford Dictionaries

Subscribe to remove ads and access premium resources

Word of the day demoralize
Pronunciation: dəˈmôrəˌlīz
verb
cause (someone) to lose confidence or hope; dispirit