hadean | ||
1. | [ noun ] 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 | |
Synonyms: | hadean_eon hadean_time priscoan priscoan_aeon priscoan_eon hadean_aeon | |
Related terms: | eon | |
2. | [ adjective ] of or relating to or characteristic of Hades or Tartarus | |
Synonyms: | Tartarean Plutonian | |
Related terms: | infernal | |
Similar spelling: |
Haydn Haden Haydon Hayden Haddon Hadden Haitian |