viewerPronunciation: /ˈvjuːə/Translate viewer | into French | into German | into Italian | into Spanish Definition of viewer noun 1a person who looks at or inspects something: the viewer of paintings or sculpture a person watching television or a film: our presenters are role models for young viewers 2a device for looking at film transparencies or similar photographic images: a slide viewerviewer in other Oxford dictionaries Definition of viewer in the US English dictionary