adj.
1.of or relating to or characteristic of Hades or Tartarus hadean n.
1.the earliest eon in the history of the Earth from the first accretion of planetary material (around 4,600 million years ago) until the date of the oldest known rocks (about 3,800 million years ago)
Idiom of the Day
cut across
to cross or go through something instead of going around it
We decided to cut across the field because we were in a hurry to get to school.