| / English Dictionary |
HADEAN
| Pronunciation (US): |  | (GB): | |
I. (noun)
Sense 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
Synonyms:
Hadean; Hadean aeon; Hadean eon; Hadean time; Priscoan; Priscoan aeon; Priscoan eon
Classified under:
Nouns denoting time and temporal relations
Instance hypernyms:
aeon; eon (the longest division of geological time)
II. (adjective)
Sense 1
Meaning:
Of or relating to or characteristic of Hades or Tartarus
Synonyms:
Classified under:
Similar:
infernal (being of the underworld)
Derivation:
Hades ((Greek mythology) the god of the underworld in ancient mythology; brother of Zeus and husband of Persephone)
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