Lyonnesse

noun

Ly·on·nesse ˌlī-ə-ˈnes

: a country that according to Arthurian legend was contiguous to Cornwall before sinking beneath the sea

Word History

First Known Use

15th century, in the meaning defined above

Time Traveler

The first known use of Lyonnesse was in the 15th century

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lyonnaise

Lyonnesse

Lyon Office

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Cite this Entry

Style

“Lyonnesse.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Lyonnesse. Accessed 12 Jul. 2025.

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