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Definition of "dictionary" []

  • A reference book containing an alphabetical list of words, with information given for each word, usually including meaning, pronunciation, and etymology. (noun)
  • A book listing the words of a language with translations into another language. (noun)
  • A book listing words or other linguistic items in a particular category or subject with specialized information about them: a medical dictionary. (noun)
  • Computer Science A list of words stored in machine-readable form for reference, as by spelling-checking software. (noun)
  • Computer Science An electronic spelling checker. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Use "dictionary" in a sentence
  • "Creating a new dictionaryThe newly completed dictionary is a research tool that will help advance those studies because - as Gil Stein points out - it goes well beyond what the word dictionary might imply."
  • "I noticed that Lach, in the dictionary translates as to be counted."
  • "The idea of a Slang dictionary is in many ways counterintuitive - or, one might say, a bit bonkers."