| − | A '''thesaurus''' is a [[dictionary]] that lists words that have a similar semantical meaning to the listed word. The most famous thesaurus is ''Roget's''. | + | A '''thesaurus''' is a [[dictionary]] that lists words that have a similar semantical meaning to the listed word. The first published thesaurus was ''Roget's''<ref>http://www.beyondbooks.com/law81/1j.asp</ref>. |