noun, plural vocabularies.
the stock of words used by or known to a particular people or group of persons: His French vocabulary is rather limited. The scientific vocabulary is constantly growing.
a list or collection of the words or phrases of a language, technical field, etc., usually arranged in alphabetical order and defined: Study the vocabulary in the fourth chapter.
the words of a language.
any collection of signs or symbols constituting a means or system of nonverbal communication: vocabulary of a computer.
any more or less specific group of forms characteristic of an artist, a style of art, architecture, or the like.

1525–35; < Medieval Latin vocābulārium, noun use of neuter of vocābulārius of words, equivalent to Latin vocābul(um) vocable + -ārius -ary

vocabularied, adjective
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World English Dictionary
vocabulary (vəˈkæbjʊlərɪ)
n , pl -laries
1.  a listing, either selective or exhaustive, containing the words and phrases of a language, with meanings or translations into another language; glossary
2.  the aggregate of words in the use or comprehension of a specified person, class, profession, etc
3.  all the words contained in a language
4.  a range or system of symbols, qualities, or techniques constituting a means of communication or expression, as any of the arts or crafts: a wide vocabulary of textures and colours
[C16: from Medieval Latin vocābulārium, from vocābulārius concerning words, from Latin vocābulumvocable]

Collins English Dictionary - Complete & Unabridged 10th Edition
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Word Origin & History

1532, "list of words with explanations," from M.L. vocabularium "a list of words," from L. vocabulum "word, name, noun," from vocare "to name, call" (see voice). Meaning "range of language of a person or group" is first attested 1753.
Online Etymology Dictionary, © 2010 Douglas Harper
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Example sentences
When you're learning a foreign language, it's helpful to have frequent vocabulary reminders for words you have learned.
His charm, however, and his sizable vocabulary inspired people to help him.
Use either set when trying to learn a foreign language, to help learn new vocabulary words.
Vocabulary, for instance-older people know more words and understand subtle
  linguistic distinctions.
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