from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A dictionary.
  • n. A stock of terms used in a particular profession, subject, or style; a vocabulary: the lexicon of surrealist art.
  • n. Linguistics The morphemes of a language considered as a group.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. The vocabulary of a language.
  • n. A dictionary that includes or focuses on lexemes.
  • n. A dictionary of Classical Greek, Hebrew, Latin, or Aramaic.
  • n. The lexicology of a programming language. (Usually called lexical structure.)
  • n. Any dictionary.
  • n. The vocabulary used by or known to an individual. (Also called lexical knowledge)
  • n. A vocabulary specific to a certain subject.

from the GNU version of the Collaborative International Dictionary of English

  • n. A vocabulary, or book containing an alphabetical arrangement of the words in a language or of a considerable number of them, with the definition of each; a dictionary; especially, a dictionary of the Greek, Hebrew, or Latin language.

from The Century Dictionary and Cyclopedia

  • n. A word-book; a vocabulary; a collection of the words of a language, usually arranged alphabetically and defined and explained; a dictionary: now used especially of a dictionary of Greek or Hebrew.
  • n. Synonyms Dictionary, Glossary, etc. See vocabulary.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. a reference book containing an alphabetical list of words with information about them
  • n. a language user's knowledge of words


from The American Heritage® Dictionary of the English Language, 4th Edition

Medieval Latin, from Greek lexikon (biblion), word(book), from neuter of lexikos, of words, from lexis, word, from legein, to speak; see leg- in Indo-European roots.

from Wiktionary, Creative Commons Attribution/Share-Alike License

English from the 17th century, from a Medieval Latin or New Latin lexicon, from Ancient Greek λεξικόν (lexicon, "a lexicon"), neuter of λεξικός (lexikos, "of words"), from λέξις (lexis, "a saying, speech, word"), from λέγειν (legein, "to speak").



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  • "There is, of course, something distasteful and absurd in the very project of parsing this lexicon of death." - Justice Blackmun

    August 27, 2010

  • I've always referred to my personal lexicon as the collection of words that I know and use. It's a synonym for vocabulary. Wordie is a great web site that helps us expand our lexica.

    September 13, 2007

  • another reference to dictionary

    September 13, 2007

  • -- I want you to write something for me, he said. Something with a bite in it. You can do it. I see it in your face. In the lexicon of youth...

    Joyce, Ulysses, 7

    January 2, 2007