Lyonnesse
noun
Ly·on·nesse
ˌlī-ə-ˈnes 
: a country that according to Arthurian legend was contiguous to Cornwall before sinking beneath the sea
Cite this Entry
“Lyonnesse.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Lyonnesse. Accessed 4 Jul. 2025.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
Share