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A thesaurus (pl.: thesauri or thesauruses), sometimes called a synonym dictionary or dictionary of synonyms, is a reference work which arranges words by their meanings (or in simpler terms, a book where one can find different words with similar meanings to other words), [1] [2] sometimes as a hierarchy of broader and narrower terms, sometimes simply as lists of synonyms and antonyms.
A synonym is a word, morpheme, or phrase that means precisely or nearly the same as another word, morpheme, or phrase in a given language. [ 2] For example, in the English language, the words begin, start, commence, and initiate are all synonyms of one another: they are synonymous. The standard test for synonymy is substitution: one form can be ...
Roget's Thesaurus is composed of six primary classes. [5] Each class is composed of multiple divisions and then sections. This may be conceptualized as a tree containing over a thousand branches for individual "meaning clusters" or semantically linked words.
WordNet is the most commonly used computational lexicon of English for word-sense disambiguation (WSD), a task aimed at assigning the context-appropriate meanings (i.e. synset members) to words in a text. [ 14] However, it has been argued that WordNet encodes sense distinctions that are too fine-grained.
The site cross-references the contents of dictionaries such as The American Heritage Dictionary of the English Language, the Collins English Dictionary; encyclopedias such as the Columbia Encyclopedia, the Computer Desktop Encyclopedia, the Hutchinson Encyclopedia (subscription), and Wikipedia; book publishers such as McGraw-Hill, Houghton Mifflin, HarperCollins, as well as the Acronym Finder ...
Versions. There are two WordWeb versions: the free version, which does not have the word list, search, anagram, or customization features; and the paid version, WordWeb Pro. WordWeb 5 added the ability to list entries from three online sources: Wikipedia, Wiktionary, and WordWeb Online. These details appear in three separate tabs.
The thesaurus was originated in the Oxford Advanced Learner's Dictionary 7th edition, where over 200 sets of synonyms were located at specific lexical entries. [ 5 ] 1st edition: Includes 2000 entries, 17000 synonyms and antonyms, 4000 definitions, 17 usage labels, 30 special subjects.
Merriam-Webster, Incorporated is an American company that publishes reference books and is mostly known for its dictionaries. It is the oldest dictionary publisher in the United States. [ 1] In 1831, George and Charles Merriam founded the company as G & C Merriam Co. in Springfield, Massachusetts.