Definition of thesaurus in English:
noun (plural thesauri /-rʌɪ/ or thesauruses)
1A book that lists words in groups of synonyms and related concepts.
- The thesaurus provides synonyms, antonyms and related words, and is accessed by just right-clicking on the word to be looked up, and selecting ‘Thesaurus’ from the menu.
- Use your word processor's thesaurus to find synonyms for ‘said’ and use them to convey a speaker's frame of mind or actions to the reader.
- Unlike a conventional thesaurus, this book concentrates on word groups, and not on individual words.