Definition of thesaurus
plural thesauri
play
\-ˈsȯr-ˌī, -ˌē\
or thesauruses
play
\-ˈsȯr-ə-səz\
1 a
:a book of words or of information about a particular field or set of concepts;
especially
:a book of words and their synonyms
b
:a list of subject headings or descriptors usually with a cross-reference system for use in the organization of a collection of documents for reference and retrieval
2
:treasury, storehouse
