hadean

Definitions

adjective of or relating to or characteristic of Hades or Tartarus
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

Sorry, no etymologies found.

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The reduplicated angānga is used to designate the soul as distinct from the body, and which at death was supposed to go away from the body and proceed to the hadean regions under the ocean, which they called Pulotu.

Samoa, A Hundred Years Ago And Long Before George Turner
In one place there was a hadean town called _Nonoa_, or Bound, where all the spirits were dumb, and could only "beat their breasts," expressive of their love to one another.

Samoa, A Hundred Years Ago And Long Before George Turner
As twice as the, complainingly ideologue be scolder with hadean static and the initial seventhly cd as setterwort.

Rational Review 2009
My friend and former officemate Kevin Zahnle at NASA, one of the galaxy’s top experts on planetary origins and evolution, has referred to the Hadean as ‘a world of exuberant volcanism, exploding meteors, huge craters, infernal heat, and billowing sulphurous steams; that is, a world of fire and brimstone punctuated with blows to the head’.

Enter the Sapiezoic: a new aeon of self-aware global change – David Grinspoon | Aeon Essays David Grinspoon 2023