The Campus reference article from the English Wikipedia on 24-Jul-2004
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Campus

Helping orphans the way you would do it
Campus is Latin for "field" or "open space". English gets the words "camp" and "campus" from this origin.

The campus is the area in which a university and surrounding buildings are situated. Usually a campus includes libraries, lecture halls, student residential areas and park-like settings.

Sometimes company offices are called campus as well, e.g. the Microsoft Campus in Redmond, Washington.