viewer
Definitions
General English
Computing
Electronics
- A separate computer application which is called upon to interpret and view files and data which could otherwise not be seen by the current application. Also refers to multimedia files. For instance, a Web browser plug in utilized to display video in a format that is not currently supported. Also called external viewer.
- noun a person who looks at something
- noun an apparatus with a light box for looking at photographic slides
Marketing
- noun a person who watches television
Real Estate
- noun someone visiting a property who is interested in buying or renting it, or who is officially inspecting it
http://www.dictionarycentral.com/definition/viewer.html