noun, plural the·sau·rus·es, the·sau·ri [-sawr-ahy] /-ˈsɔr aɪ/.
- 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.
- a dictionary of synonyms and antonyms stored in memory for use in word processing.
Origin of thesaurus
Definition for thesaurus (2 of 2)
noun, plural online thesauruses, online thesauri.
Examples from the Web for thesaurus
Had Palin scoured a thesaurus, she could not have come up with a more inflammatory phrase.
The Bibliotaph carried much accurate information in his head, but he never traveled without a thesaurus in his valise.The Bibliotaph|Leon H. Vincent
Get my Thesaurus, Stony, off the desk in the next room, and turn to 'beauty.'The Bread Line|Albert Bigelow Paine
It is a mosque as well as a hall of council, and a thesaurus to boot, for unimaginable treasures are buried in its caverns.
Is there a Thesaurus of the trade, profession, calling, industry or mystery?
The work, however, on which his fame as a scholar is most surely based is the Thesaurus Graecae linguae.
British Dictionary definitions for thesaurus
noun plural -ruses or -ri (-raɪ)
Word Origin for thesaurus
Word Origin and History for thesaurus
1823, "treasury, storehouse," from Latin thesaurus "treasury, treasure," from Greek thesauros "a treasure, treasury, storehouse, chest," from root of tithenai "to put, to place." The meaning "encyclopedia filled with information" is from 1840, but existed earlier as thesaurarie (1590s), used as a title by early dictionary compilers. Meaning "collection of words arranged according to sense" is first attested 1852 in Roget's title. Thesaur is attested in Middle English with the meaning "treasure" (15c.-16c.).