Definition of "deathless"

deathless

/ˈdɛθləs/

adjective
comparative more deathless, superlative most deathless
1. Undying or immortal.
  Quotations
  Like the deathless vampire who must repeat its stalk-and-kill cycle in order to satisfy a recurring blood hunger, the earliest film horrors cannibalized its literary ancestry again and again.
  2005, Tony Magistrale, Abject Terrors: Surveying the Modern and Postmodern Horror Film
2. (of a work of art, literature, etc.) Guaranteed not to be lost or forgotten due to its importance or conspicuous excellence.
  Quotations
  "We cannot do less than call it Ixodes Maloni. The very small inconvenience of being bitten, my young friend, cannot, I am sure, weigh with you as against the glorious privilege of having your name inscribed in the deathless roll of zoology."
  1912, Arthur Conan Doyle, The Lost World […], London, New York, N.Y.: Hodder and Stoughton
  Finally, one voice in England proclaimed him a deathless dramatist and portrayer of character (Morgann) (<422).
  2000, Jacques Barzun, From Dawn to Decadence, HarperCollins, page 516