Dictionary \Dic"tion*a*ry\, n.; pl. Dictionaries. [Cf. F.
   dictionnaire. See Diction.]
   1. A book containing the words of a language, arranged
      alphabetically, with explanations of their meanings; a
      lexicon; a vocabulary; a wordbook.
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            I applied myself to the perusal of our writers; and
            noting whatever might be of use to ascertain or
            illustrate any word or phrase, accumulated in time
            the materials of a dictionary.        --Johnson.
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   2. Hence, a book containing the words belonging to any system
      or province of knowledge, arranged alphabetically; as, a
      dictionary of medicine or of botany; a biographical
      dictionary.
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