vocabulary Meaning, Definition & Usage

  1. noun a listing of the words used in some enterprise
  2. noun a language user's knowledge of words
    lexicon; mental lexicon.
  3. noun the system of techniques or symbols serving as a means of expression (as in arts or crafts)
    • he introduced a wide vocabulary of techniques

WordNet

Vo*cab"u*la*ry noun
Etymology
LL. vocabularium, vocabularius: cf. F. vocabulaire. See Vocable.
Wordforms
plural Vocabularies
Definitions
  1. A list or collection of words arranged in alphabetical order and explained; a dictionary or lexicon, either of a whole language, a single work or author, a branch of science, or the like; a word-book.
  2. A sum or stock of words employed.
    His vocabulary seems to have been no larger than was necessary for the transaction of business. Macaulay.

Webster 1913