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A scholarly dinosaur known worldwide for his knowledge of words of all kind.
The brachiosaurus consulted the wise Thesaurus upon synonyms of "extinct".
by Mickey Mouse June 18, 2003
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May 8 Word of the Day
1. Slight sins or offenses
2. Petty crimes or small infractions
3. Las Vegas Punk Rock!
Peccadilloes shows rule.
by James Messina August 11, 2006
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THE ONE dinosaur who was so "the shit", that he needed no prefix.
Daaaaym, THEsaurus is so the shit!

by Craptoidilus February 23, 2008
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A dinosaur that goes by many names. If you come in contact with it be prepared for its name to change when used too often. Similar to a Dictasaurus, but not be confused with a Dictionary. A Thesaurus is a plant-eating dinosaur. Its diet consists of sawdust mixed with water.
A Thesaurus is a plant-eating dinosaur and its favorite meal is sawdust mixed with water.
by KittyFaths September 18, 2018
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A thesaurus is a reference work that lists words grouped together according to similarity of meaning (containing synonyms and sometimes antonyms), in contrast to a dictionary, which contains definitions and pronunciations.

The largest thesaurus in the world is the Historical Thesaurus of the Oxford English Dictionary, which contains more than 920,000 entries.
Girl at library: Excuse me, where is the thesaurus found here?

Librarian: It's at the "reference" or the "non-fiction" section.

Girl: OK, thank you~
by Final Fantasy DUNDUNDUN October 06, 2011
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