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

  • n. The total set of words in a language as distinct from morphology; vocabulary.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. The set of all words and phrases in a language.
  • n. The vocabulary used by a writer

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

  • n. all of the words in a language; all word forms having meaning or grammatical function


Greek, speech, word; see lexicon.
(American Heritage® Dictionary of the English Language, Fourth Edition)
From Ancient Greek λέξις (lexis, "diction”, “word"), from λεγ- (leg-, "to speak"). (Wiktionary)



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