Elmer: the Social Science Resource Center

Elmer is a wiki based social science dictionary that aims to examine different meanings for terms across different social science disciplines, evaluating how the terms have evolved in meaning over time. It's free to use, and as with all wikis, this relies on audience participation, though you need to contact the site's editor and founder (Martin M. Elissetche) to become involved as a contributor. (Martin is a PhD student at the University of Maryland in the USA). The site lists 1000+ definitions, mainly of social sciences concepts, and there are plans to expand the coverage into biographies, historical events etc. From Intute.ac.uk
http://www.socialsciencedictionary.org