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/ English Dictionary

HADEAN EON

Pronunciation (US): Play  (GB): Play

 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 lifeplay

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)

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