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Noun: viewer  vyoo-u(r)
  1. A close observer; someone who looks at something (such as an exhibition of some kind)
    "television viewers";
    - spectator, witness, watcher, looker
  2. An optical device for viewing photographic transparencies
  3. (computing) a program that displays the contents of a file visually

Derived forms: viewers

Type of: beholder, observer, optical device, perceiver, percipient

Encyclopedia: Viewer