Celebrated on January 18, the birthday of Peter Mark Roget, author of the Thesaurus of English Words and Phrases (better known as Roget’s Thesaurus), Thesaurus Day is a celebration of words, their meanings, and the time and care taken to craft writing which avoids monotonous repetition.
Thesaurus.com provides us with the following definition for Thesaurus:
Part of Speech: noun
Definition: dictionary of synonyms and antonyms
Synonyms: glossary, language reference book, lexicon, onomasticon, reference book, sourcebook, storehouse of words, terminology, treasury of words, vocabulary, word list.
Makes me want to use onomasticon in a sentence.