What is the meaning of the word "hadean"?

Definitions:

  1. Earlies eon in Earth's history, characterized by exreme heat, volcanic activity, and the formation of the planet's initial crust. copy to clipboard ADJECTIVE
    • During the Hadean eaon, Earth was a molten mass with frequent volcanic eruptions. copy to clipboard
  2. Term used in geology to refer to the earliest eon in Earth's history, spanning from the formation of the Earth about 4.6 billion years to about 4 billion years ago. copy to clipboard ADJECTIVE
    • The name "Hadean" comes from Hades, the ancient Greek god of the underworld, reflecting the eon's extreme conditions. copy to clipboard

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