VocabGrabber : Thinkmap Visual Thesaurus
http://www.visualthesaurus.com/vocabgrabber/
a visual map and thesaurus
How does Vocabgrabber work? VocabGrabber analyzes any text you're interested in, generating lists of the most useful vocabulary words and showing you how those words are used in context. Just copy text from a document and paste it into the box, and then click on the "Grab Vocabulary!" button. VocabGrabber will automatically create a list of vocabulary from your text, which you can then sort, filter, and save. Select any word on the list and you'll see a snapshot of the Visual Thesaurus map and definitions for that word, along with examples of the word in your text. Click on the word map or the highlighted word in the example to see the Visual Thesaurus in action. Want to try it out? Click on one of our sample texts to fill the box and start grabbing! How can I view my vocabulary list? After you grab the vocabulary from a text, you will see a list of words and phrases in "tag cloud" view. In the default view, words in the vocab list are arranged by relevance (more on that below!). In tDictionary and Thesaurus - Merriam-Webster Online
Free online dictionary, thesaurus, spanish-english and medical dictionaries, audio pronunciations, Word of the Day, word games, and many more high-quality Merriam-Webster language resources.