Advanced English Dictionary
Advanced English Dictionary is better than other dictionaries, not just because it contains far more words than a conventional paper dictionary, but because it uses a radically new approach to searching for words. Instead of just listing the words and their definitions, AED shows how every word is linked to another. For example, type in the word "tree" and you will get not only the definition, synonyms and opposites, but the hypernyms (a tree is a kind of what?), meronyms (what are the parts of a tree?) and more. You can also find a list of hundreds of trees, from yellowwood to the Tree of Knowledge.
