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Pronunciation: (thi-sôr'us), [key]
pl. -sau•rus•es, -sau•riPronunciation: (-sôr'ī). [key]

1. a dictionary of synonyms and antonyms.
2. any dictionary, encyclopedia, or other comprehensive reference book.
3. a storehouse, repository, or treasury.
4. Computers.
a. an index to information stored in a computer, consisting of a comprehensive list of subjects concerning which information may be retrieved by using the proper key terms.
b. a dictionary of synonyms and antonyms stored in memory for use in word processing.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

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