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Definition of vocabulary


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vo·cab·u·lar·y  audio  (v-kby-lr) KEY 

NOUN:
pl. vo·cab·u·lar·ies
  1. All the words of a language.
  2. The sum of words used by, understood by, or at the command of a particular person or group.
  3. A list of words and often phrases, usually arranged alphabetically and defined or translated; a lexicon or glossary.
  4. A supply of expressive means; a repertoire of communication: a dancer's vocabulary of movement.

ETYMOLOGY:
French vocabulaire, from Old French, from Medieval Latin vocbulrium, from neuter of vocbulrius, of words, from Latin vocbulum, name ; see vocable


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