Memidex – Free Online Dictionary/Thesaurus and More
http://www.memidex.com/

Memidex is a free online dictionary and thesaurus with a simple interface, complete inflections, auto-suggest, adult-filtering, frequent updates, a browsable index, support for mobile devices, and millions of external reference links for definitions, audio, and etymology. It’s fast too. Use the Find box for exact matching or browse using the complete index. This has been added to the tools section of Research Resources Subject Tracer™ Information Blog. This has been added to Reference Resources Subject Tracer™ Information Blog.