Synonyms
Antonyms

1. archean

adjective. of or relating to the earliest known rocks formed during the Precambrian Eon.

Synonyms

  • archaean

Antonyms

  • late
  • last

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2. Archean

noun. the time from 3,800 million years to 2,500 million years ago; earth's crust formed; unicellular organisms are earliest forms of life.

Synonyms

  • Archaeozoic
  • Archaeozoic aeon
  • Archeozoic eon
  • Archean eon
  • Archean aeon
  • Precambrian
  • Precambrian period
  • Precambrian eon
  • Archeozoic

Example sentences of the word archean


1. Adjective
Relatively simple organisms like bacteria and members of the archean domain belong to a category of life called the prokaryotes.

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