Definition of: vocabulary

(vō·kab′yə·ler′ē) noun plural ·lar·ies
1. A list of words or of words and phrases, especially one arranged in alphabetical order and defined or translated; a lexicon; glossary.
2. All the words of a language.
3. A sum or aggregate of the words used or understood by a particular person, class, etc., or employed in some specialized field of knowledge.
4. The range of expression at a person's disposal, especially in art. [<LL vocabularius <L vocabulum. See VOCABLE.]