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the·sau·rus (t̸hi sô′rəs)

noun pl. thesauri -·sau′ri′ (-rī′) or thesauruses -·sau′·ruses

  1. a treasury or storehouse
  2. a book containing a store of words; specif., a book of synonyms and antonyms
  3. a categorized index of terms for use in information retrieval, as from a computer

Etymology: L < Gr thēsauros, a treasure

Webster's New World College Dictionary Copyright © 2005 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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