Usually means: Earliest geologic eon, Earth formed.
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We found 9 dictionaries that define the word Hadean time:

General (8 matching dictionaries)
  1. Hadean Time: American Heritage Dictionary of the English Language
  2. Hadean time: Vocabulary.com
  3. Hadean time: Wiktionary
  4. Hadean Time: Dictionary.com
  5. Hadean time: Rhymezone
  6. hadean time: FreeDictionary.org
  7. hadean time: Mnemonic Dictionary
  8. Hadean Time: TheFreeDictionary.com

Computing (1 matching dictionary)
  1. Hadean time: Encyclopedia

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Definitions from Wiktionary (Hadean time)

▸ noun:  (geology) The geologic eon from about 4,600 to 3,800 million years ago, marked by the formation of the first rocks.

Similar:
Hadean, azoic rock, Archaean, Archean, Hesperian epoch, Paleoarchean, Precambrian, Eoarchean, Archæan, Hettangian, more...

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Similar:
Hadean, azoic rock, Archaean, Archean, Hesperian epoch, Paleoarchean, Precambrian, Eoarchean, Archæan, Hettangian, more...



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