The Plumb Design Visual Thesaurus is an exploration of sense relationships within the English language. By clicking on words, you follow a thread of meaning, creating a spatial map of linguistic associations. The Visual Thesaurus was built using Thinkmap , a data-animation technology developed by Plumb Design.
Users can browse the thesaurus through the alphabetical index of headwords or by category outline.
There are six broad categories into which Mr. Roget classified the entire vocabulary of the English language. You can find information on classification schemes and thesauri online. Back in the 1820s, Noah Webster was on the cutting edge of American English. In 1997, Merriam-Webster carried his legacy forward into the electronic age. WEDT contains 50,000 headwords and precisely defined and hyperlinked synonyms.