noun

lexicon

LEK-sih-kahn/ˈleksɪkɑːn/

The vocabulary available within a language or field.

The dictionary records the language's lexicon in orderly columns of entries.

An open dictionary with orderly columns of varied short abstract word entries, vocabulary collection clearly shown.
Etymology

Greek lexikon designated a word-book. The meaning expanded figuratively from a book collecting words to the vocabulary itself, including the words characteristic of a particular field, person, or text.

In context

Joseph Tsar5:32
your surface lexicon is the size that it is because you encounter those 500 to 1500 words daily
I learned a system for speaking articulately

More examples

  • The English lexicon includes words borrowed from many languages.
  • She is still learning the lexicon of computer programming.
  • Law and medicine have distinct lexicons, even when they share words.

Forms

lexicon · lexicons · lexica

lexical adjective — Relating to words and their meanings.

Similar words

vocabulary
A more everyday term for the same body of words.
terminology
Focuses on specialized terms rather than a field's entire vocabulary.
jargon
Emphasizes specialized language that outsiders may find difficult to understand.