thesaurus Meaning in the Cambridge English Dictionary
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Meaning of “thesaurus” in the English Dictionary

"thesaurus" in British English

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thesaurusnoun [C]

uk   /θɪˈsɔː.rəs/  us   /-ˈsɔːr.əs/ (plural thesauruses or formal thesauri uk   /θɪˈsɔː.raɪ/  us   /-ˈsɔːr.aɪ/ )
a ​type of ​dictionary in which words with ​similarmeanings are ​arranged in ​groups
(Definition of thesaurus from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"thesaurus" in American English

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thesaurusnoun [C]

 us   /θəˈsɔr·əs/ (plural thesauri  /θəˈsɔrˌɑɪ, -ˈsɔrˌi/ , thesauruses)
a ​book or ​electronictext that ​helps you ​find words with ​similar meanings esp. by ​listing them together
(Definition of thesaurus from the Cambridge Academic Content Dictionary © Cambridge University Press)
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