HADEAN as NOUN

1. Meaning
   • 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
   Synonym(s)
   • Hadean aeon (what does Hadean aeon mean?)
   • Hadean eon (what does Hadean eon mean?)
   • Hadean time (what does Hadean time mean?)
   • Priscoan (what does Priscoan mean?)
   • Priscoan aeon (what does Priscoan aeon mean?)
   • Priscoan eon (what does Priscoan eon mean?)
   Hypernyms(s) Hadean is a kind of… Example: animal is a hypernym of mammal, plant is a hypernym of flower
   • eon (what does eon mean?)
   • aeon (what does aeon mean?)

HADEAN as ADJECTIVE

1. Meaning
   • of or relating to or characteristic of Hades or Tartarus
   Synonym(s)
   • Plutonian (what does Plutonian mean?)
   • Tartarean (what does Tartarean mean?)
   Similar To
   • infernal (what does infernal mean?)