dictionary - definition and synonyms

noun [countable] 

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  1. 1
    a reference resource which provides information about words and their meanings, uses, and pronunciations. A dictionary may be published as a printed book, or as a digital product such as a website or app, and it may be monolingual, bilingual, or multilingual.

    a dictionary of the English language

    an English-Chinese dictionary

  2. 2
    a book, website or other resource which deals with a particular subject, providing the words, phrases, and terms used in that field, with information about their meaning and use

    a dictionary of art/music/biology