Lexicon

  1. In general a lexicon is a group of words that makes up a language. For example, each of the words in this sentence are just a few of the words that make up the English lexicon.
  2. When referring to computers or programming, lexicon is the group of words that are used to create a programming language. For example, for, foreach, do, if, and whileare just a few examples of words found in many programming languages.

Also see: Programming definitions