From Longman Dictionary of Contemporary Englishuser interfaceˌuser ˈinterface noun [countable] TDhow a computer program looks on screen and how the user enters commands and information into the program
Examples from the Corpus
user interface• An add-on graphical user interface is available.• It uses a drag and drop-style graphical user interface based on OSF/Motif.• The graphical user interface supports either Open Look or Motif applications.• Defragmentation is not a daily job anyway, so sophistication of user interface is of minor significance.• It also makes more powerful features available at the user interface, such as image transformations.• The company says it has enhanced the user interface and reduced install time.• In addition to user interface changes, a repair report generator was added. 