lexicon

noun

Synonyms of lexicon
1
: a book containing an alphabetical arrangement of the words in a language and their definitions : dictionary
a French lexicon
2
a
: the vocabulary of a language, an individual speaker or group of speakers, or a subject
computer terms that have been added to the lexicon
b
: the total stock of morphemes in a language
3
: repertoire, inventory
added the DVD to his video lexicon

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Tips on Using Lexicon in a Sentence

The word lexicon has a number of closely-related meanings, which can easily lead to confusion and may cause the word to be used in an awkward way. Lexicon can refer to a general dictionary of a language (as in "a lexicon of the Hebrew language") and also to a narrower printed compilation of words within some sphere (as in "a medical lexicon" or "a lexicon of the German in Finnegans Wake").

Similarly, lexicon can refer both to the vocabulary of a specific group of people ("the lexicon of French") or to the general language used by an unspecified group of people ("a word that has not entered the general lexicon yet"). It may also often be found in reference to the vocabulary employed by a particular speaker ("'Failure' is not a word in my lexicon").

Examples of lexicon in a Sentence

a computer term that has entered the general lexicon an avid word enthusiast who is compiling a lexicon of archaic and unusual words
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Pelé added at least two memorable phrases to the Brazilian football lexicon. Jack Lang, New York Times, 2 June 2026 During its long history, the sport has developed a unique lexicon drawn from multiple languages around the world. Tushaar Kuthiala, Encyclopedia Britannica, 1 June 2026 The poetic lexicon in your statements feels as an opportunity to pause and reset. Vogue, 5 June 2026 And the latest entry into the political lexicon is spreading quickly online and on the campaign trail. David Ingram, NBC news, 3 June 2026 See All Example Sentences for lexicon

Word History

Etymology

Late Greek lexikon, from neuter of lexikos of words, from Greek lexis word, speech, from legein to say — more at legend

First Known Use

1580, in the meaning defined at sense 1

Time Traveler
The first known use of lexicon was in 1580

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Cite this Entry

“Lexicon.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/lexicon. Accessed 7 Jul. 2026.

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