The Association of American Colleges & Universities diversity resources page highlights its own meetings, institutes, publications, projects, and other selected diversity resources available online.
The University of Idaho's President's Diversity Council offers a detailed definition of diversity:
Because we define diversity in a broad manner, our definition covers, but is not limited to, familiar characteristics involving gender, race, and ethnicity. It expands to include religion, sexual orientation, age, class and able-bodiedness. It reaches more broadly to include local, national and global cultural variation as well as to a variety of other manners in which individuals and groups are distinct in meaningful ways. We also recognize that the various social and cultural articulations of these differences involve systems of explicit and implicit stratification, inequalities, discrimination and oppression.
Image courtesy of the Office of Multicultural Affairs