plural of io
"The server crashed after receiving too many simultaneous ios from the client applications."
An island in the Aegean Sea.
"My new smartphone runs on iOS, which is the exclusive operating system developed by Apple for iPhones and iPads."
A mobile operating system (OS) created and developed by Apple Inc. exclusively for its hardware.
The word iOS comes from combining the letter "i" with the operating system designation "OS." This naming convention was adopted by Apple to create a distinct brand identity for its mobile devices, following a pattern where many of their other products also begin with an "i-".