Synonyms and Antonyms for Hadean

1. Hadean (adj.)

of or relating to or characteristic of Hades or Tartarus

Synonyms: Antonyms:

2. Hadean (n.)

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); no evidence of life