Mathematical Thesaurus - http://thesaurus.maths.org/
Defines mathematical words and concepts, and indicates the links between them. |
Phrase Finder - http://www.phrases.org.uk/
Enter a single word and it will return a list of phrases and sayings that are related to the word in some way. |
Roget's II - The New Thesaurus - http://www.bartleby.com/62/
Contains 35,000 synonyms, succinct word definitions and a hyperlinked category index. |
Roget's International Thesaurus of English Words and Phrases - http://www.bartleby.com/110/
85,000 hyperlinked cross-references, plus proverbs and quotations from classic and modern authors. |
Thesaurus.com - http://thesaurus.reference.com/
Searchable online version of Roget's Thesaurus of English words and phrases. |