Definition of "Hadean"

Hadean

/heɪˈdiːən/

adjective
not comparable
1. Pertaining to Hades or hell.
  Quotations
  No Ceres weeps at the Hadean gate!
  1902, Frederic Crowninshield, A Painter's Moods, page 49
2. (geology) Of, or relating to the geological eon.
proper noun
1. (geology) The Hadean eon; part of the Precambrian supereon, spanning from around 4.6 to 4 billion years ago.