Hadean
[sometimes h-] designating or of the time on earth when the solar system was forming and the earth was still in a molten state; Precambrian, esp. early Precambrian
Origin of Hadean
from Hades: by analogy with the fires and chaos of hell, as described in Christian traditionHadean Idioms
the Hadean
the Hadean time period
Hadean
adjective
Of, relating to, or being the period of time during which Earth formed, from the start of the solar system (4.6 billion years ago) until accretion, impact, and cooling led to stable Earth-Moon orbits and the formation of the earliest rocks on Earth (3.8 billion years ago). geologic time
Origin of Hadean
After Hades (from the intense heat during part of this period)