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English definition of “viewer”

viewer

noun [C]     /ˈvjuːər/
COMMUNICATIONS someone who watches a television programme: The ads were designed to appeal to viewers of home improvement shows.attract/bring in/draw viewers The first episode attracted almost 20 million viewers. television/TV viewers
IT a piece of equipment or software that allows you to look at images: a picture/photo viewer
(Definition of viewer noun from the Cambridge Business English Dictionary © Cambridge University Press)
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