noun Arthurian Romance.
  1. the mythical region where Sir Tristram was born, located near Cornwall in SW England and supposed to have been submerged by the sea. Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for lyonnesse

Historical Examples of lyonnesse

  • She'd also had a good look at you that day at the Lyonnesse Club.

  • Baroni had gained his point, and was ushered into the fine chambers set apart for the future Duke of Lyonnesse.

    Under Two Flags

    Ouida [Louise de la Ramee]

  • At Lyonnesse, after a fierce battle in which confusion reigned and friends and foes were shadows in the mist, he meets his king.

    Journeys Through Bookland, Vol. 10

    Charles Herbert Sylvester

  • Stuart said musingly: I see Lyonnesse more as the land where the dead wait till they are wanted again.

    Twos and Threes

    G. B. Stern

  • Lyonnesse is the scene of many incidents in the Arthurian romances, and especially in the romances of Tristram and Iseult.

British Dictionary definitions for lyonnesse


  1. (in Arthurian legend) the mythical birthplace of Sir Tristram, situated in SW England and believed to have been submerged by the sea
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012