sentences:  Long the subject of artworks, Iðunn is sometimes referenced in modern popular culture.The name "Iðunn" has been variously explained as meaning "ever young", "rejuvenator", or "the rejuvenating one".As the modern English alphabet lacks the eth (ð) character, "Iðunn" is sometimes anglicized as Idun, Idunn or Ithun.