Lexicon

/ˈlɛk.sɪ.kən/

Meaning & Definition

noun
The vocabulary of a person, language, or branch of knowledge.
His extensive lexicon of technical terms made him a valuable asset to the project.
A dictionary or a listing of the words of a language.
The lexicon of this dialect is quite different from standard English.
A mental repository of words and their meanings.
As a young child, she was encouraged to expand her lexicon through reading.

Etymology

From the Greek 'lexikon', meaning 'of or for words'.

Common Phrases and Expressions

mental lexicon
The cognitive dictionary that contains all the words a person understands.
lexicon of a profession
The specialized vocabulary used in a specific field of work.
children's lexicon
The set of words that children are capable of understanding or using.

Related Words

vocabulary
The set of words known and used by a person.
dictionary
A book or electronic resource that lists words and their meanings.

Slang Meanings

A person's unique set of words and expressions.
He's got a whole lexicon of slang from growing up in the city.
The collection of terms used in a specific subculture.
The lexicon of gamers includes abbreviations and references unique to the community.