It's the word

The Visuwords™ online graphical dictionary allows you to look up words to find their meanings and associations with other words and concepts. You can produce diagrams reminiscent of a neural net & learn how words associate.
Enter words into the search box to look them up or double-click a node.
Its a dictionary! Its a thesaurus!
Great for writers, journalists, students, teachers, and artists.
The online dictionary is available wherever there’s an internet connection.
No membership required.
Visuwords™ uses Princeton University’s WordNet, an opensource database built by University students and language researchers. Combined with a visualization tool and user interface built from a combination of modern web technologies, Visuwords™ is available as a free resource to all patrons of the web.

http://www.visuwords.com/

Source: JISC RSC Scotland S&W