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the·sau·rus (t̸hi sô′rəs)
noun pl. thesauri -·sau′ri′ (-rī′) or thesauruses -·sau′·ruses
- a treasury or storehouse
- a book containing a store of words; specif., a book of synonyms and antonyms
- a categorized index of terms for use in information retrieval, as from a computer
Etymology: L < Gr thēsauros, a treasure
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