A thesaurus is a reference work that helps find words with similar meanings.

Look up thesaurus in Wiktionary, the free dictionary.

Thesaurus may also refer to:

• Thesaurus (information retrieval), a form of controlled vocabulary that seeks to dictate semantic manifestations of metadata in the indexing of content objects
• Thesaurus (radio transcription service), a syndication service that provided transcribed programs for use by radio stations
• Thesaurus (album), a 1969 album by Clare Fischer

This disambiguation page lists articles associated with the title Thesaurus.
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