user interface

American

noun

Digital Technology.

the interface features through which users interact with the hardware and software of computers and other electronic devices. UI

Etymology

Origin of user interface

First recorded in 1965–70

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

It also became one of the early examples of user interface design conventions such as badges, rating buttons, sharing and recommendation features which have largely become standard features across media platforms today.

From BBC • Feb. 18, 2026

Instead of the MS-DOS-like “command line” interface that the core app has, Cowork displays a more friendly, graphical user interface.

From The Wall Street Journal • Jan. 17, 2026

The browser’s design language and user interface resembles Chrome.

From Barron's • Oct. 22, 2025

“Voice is a very natural user interface, as are hand gestures.”

From Los Angeles Times • Sep. 18, 2025

This allows for the actual server to be moved around the net while the user interface to that machine remains constant.

From Hitchhiker's Guide to the Internet by Krol, Ed

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023